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Prof Dan Hewak

email: dh@orc.soton.ac.uk
tel: +44 23 8059 3164

Member of groups

About Prof Dan Hewak

Professor Dan Hewak leads a research group investigating novel glasses for optoelectronic devices. He obtained his PhD from the University of Waterloo, Canada, in 1989, where he studied planar optical waveguides and devices. He spent three years with the National Optics Institute in Quebec City before joining the ORC. Since 1991 he has been with the ORC where he has developed a broad range of experience in new glasses, and in particular chalcogenide glasses. In the past five years he has worked on 10 major projects, 6 as project leader and participated in 8 EPSRC funded projects as a principle and co-investigator. Relevant past EPSRC funded work includes integrated microsphere circuits, from which the world’s first chalcogenide glass microsphere and microsphere lasers emerged, optical and electronic phase change memory and work on advancing the applications of chalcogenide glass and photonic devices. He has published over 160 refereed papers and is the holder of eleven patents for novel glasses and their applications. He has presented his work internationally as both invited and contributed talks. Dan has an extensive network of UK and international collaborators, both in academia and industry and serves on the TC20 Committee of the International Congress on Glass. He is the editor of a textbook published by the IEE entitled Properties, Processing and Applications of Glass and Rare-Earth Doped Glasses for Optical Fibres and section editor for Optical Materials in the journal Current Opinion in Solid State Materials.


Research income to date: £1.54 million


Awards/prizes:
Research interests: optical materials, optical devices, optoelectronic devices and circuits, optical fibres and waveguides, plasmonics, metamaterials, phase change media


Current research projects:

  • EPSRC Centre for Innovative Manufacturing in Photonics

  • Nanostructured Photonic Metamaterials

  • Integrated Microsphere Planar Lightwave Circuits

  • Portfolio Partnership in Photonics


Number of current students: one


Number of previous students supervised to completion: six


External activities: Founding Director, ChG Southampton Ltd


Associations: Optical Society of American, Institute of Physics


Member of external bodies, or professional organisations: International Congress on Glass


There are 192 publications in ORC database for 'Hewak, D.'

  • 4805 —  Z.L.Samson, S-C.Yen, K.F.MacDonald, K.Knight, S.Li, D.W.Hewak, D-P.Tsai, N.I.ZheludevChalcogenide glasses in active plasmonics
    Physica Status Solidi - Rapid Research Letters 2010 DOI 10.1002/pssr.201004252  
  • 4796 —  Z.L.Samson, B.Gholipour, F.De Angelis, S.Li, K.J.Knight, J.Zhang, T.Uchino, C.C.Huang, K.F.MacDonald, P.Ashburn, E.Di Fabrizio, D.W.Hewak, N.I.ZheludevActive photonic metamaterials
    8th Electro-Optics and infrared Conference Shrivenham UK 7-9 Jul 2010
    [Abstract]      
  • 4795 —  D.W.Hewak, C.C.Huang, K.J.Knight, B.Gholipour, S.Li, Z.L.Samson, K.F.MacDonald, N.I.ZheludevActive chalcogenide glass photonics and electro-optics for the mid-infrared
    8th Electro-Optics and Infrared Conference Shrivenham UK 7-9 Jul 2010
    [Abstract]      
  • 4693 —  D.W.Hewak, Z.L.Samson, B.Gholipour, K.Knight, C.-C.Huang, S.Li, K.F.MacDonald, N.I.ZheludevChalcogenide phase change materials for nanoscale switching
    Photonics North 2010 Niagara Falls Canada 1-3 Jun 2010 (Invited)
    [Abstract]      
  • 4670 —  G.S.Murugan, Y.Panitchob, E.J.Tull, P.N.Bartlett, D.W.Hewak, M.N.Zervas, J.S.WilkinsonPosition-dependent coupling between a channel waveguide and a distorted microsphere resonator
    Journal of Applied Physics 2010 Vol.107 pp.053105
    [Abstract]      
  • 4617 —  C.C.Huang, K.Knight, D.W.HewakDeposition and characterization of copper indium gallium sulphide thin films fabricated by chemical vapour deposition with metal chloride precursors
    PVSAT-6 Southampton 24-26 Mar 2010
    [Abstract]      
  • 4610 —  J.S.Wilkinson, G.S.Murugan, D.W.Hewak, M.N.Zervas, Y.Panitchob, G.R.Elliott, P.N.Bartlett, E.J.Tull, K.R.RyanIntegrated microsphere planar lightwave circuits
    ECIO 2010 Cambridge 7-9 Apr 2010 ThB3 (Invited)
    [Abstract]      
  • 4598 —  Z.L.Samson, J.Zhang, G.Adamo, T.Uchino, B.Gholipour, K.Knight, C.C.Huang, F.De Angelis, K.F.MacDonald, P.Ashburn, E.Di Fabrizio, D.W.Hewak, N.I.ZheludevChalcogenide plasmonic metamaterial switches
    SPIE Optics & Photonics 2010 San Diego 1-5 Aug 2010  
  • 4592 —  C.C.Huang, C.C.Wu, K.Knight, D.W.HewakOptical properties of CVD grown amorphous Ge-Sb-S thin films
    Journal of Non-Crystalline Solids Jan 2010 356 pp.281-285
    [Abstract]      
  • 4572 —  Z.L.Samson, K.F.MacDonald, F.De Angelis, B.Gholipour, K.Knight, C.C.Huang, E.Di Fabrizio, D.W.Hewak, N.I.ZheludevMetamaterial electro-optic switch of nanoscale thickness
    Applied Physics Letters 2010 Vol.96 pp.143105
    [Abstract]      
  • 4571 —  N.I.Zheludev, A.Nikolaenko, K.F.MacDonald, V.A.Fedotov, D.W.Hewak, G.Adamo, Z.L.Samson, E.Plum, D.P.Tsai, E.Di Fabrizio, F.De AngelisNonlinear and switchable plasmonic metamaterials
    PIERS 2010 Xi'an China 22-26 Mar 2010 (Keynote) (Invited) 
  • 4569 —  N.I.Zheludev, A.Nikolaenko, Z.L.Samson, K.F.MacDonald, K.Knight, C.C.Huang, D.W.Hewak, F.De Angelis, E.Di FabrizioNonlinear and switchable photonic metamaterials
    META '10 Cairo 22-25 Feb 2010 (Keynote talk) (Invited) 
  • 4528 —  Z.L.Samson, G.Adamo, K.F.MacDonald, K.Knight, F.De Angelis, A.Nikolaenko, C.C.Huang, E.Di Fabrizio, D.W.Hewak, N.I.ZheludevSwitching metamaterials with electronic signals and electron-beam excitations
    SPIE Photonic Europe 2010 Brussels 12-16 Apr 2010
    [Abstract]      
  • 4721 —  M.A.Hughes, W.Yang, D.W.HewakSpectral broadening in femtosecond laser written waveguides in chalcogenide glass
    Journal of the Optical Society of America B (JOSA B) 2009 Vol.26(7) pp.1370-1378
    [Abstract]      
  • 4720 —  M.A.Hughes, T.Akada, T.Suzuki, Y.Ohishi, D.W.HewakUltrabroad emission from a bismuth doped chalcogenide glass
    Optics Express 2009 Vol.17(22) pp.19345-19355
    [Abstract]      
  • 4530 —  Z.L.Samson, K.F.MacDonald, K.Knight, C.C.Huang, P.Horak, D.W.Hewak, M.I.Stockman, F.De Angelis, E.Di Fabrizio, S.C.Yen, D.P.Tsai, N.I.ZheludevActive control of surface plasmon polaritons and metamaterials
    International Scientific Instrument Technology Workshop (ISITW) Hsinchu Taiwan 21 Oct 2009 (Invited) 
  • 4505 —  Z.L.Samson, K.F.MacDonald, F.De Angelis, G.Adamo, K.Knight, C.C.Huang, D.W.Hewak, E.Di Fabrizio, N.I.ZheludevChalcogenide glass metamaterial optical switch
    FiO 2009 San Jose 11-15 Oct 2009 PDPB1 (Postdeadline) 
  • 4488 —  D.W.Hewak, K.Knight, C.C.HuangTowards deposition of copper indium gallium sulphide/selenide materials by chemical vapour deposition
    IoP: Thin Film Photovoltaics London 16 Sep 2009
    [Abstract]      
  • 4435 —  C.C.Huang, Y.-L.D.Ho, J.G.Rarity, D.W.HewakFocused ion beam etched ring-resonator in CVD-grown Ge-Sb-S thin films
    CLEO Pacific Rim 2009 Shanghai 30 Aug-3 Sep 2009
    [Abstract]      
  • 4393 —  D.W.HewakRare earth doped chalcogenide glass: Past success and future prospects
    Society of Glass Technology Annual Conference 2009 Lancaster 16-18 Sep 2009 (Invited)
    [Abstract]      
  • 4350 —  D.W.HewakUp to speed
    Materials World 2009 Vol.17(3) pp.34-35
    [Abstract]      
  • 4317 —  N.I.Zheludev, S.C.Yen, Z.L.Samson, K.F.MacDonald, K.Knight, D.W.HewakPhase-change chalcogenide glasses in active plasmonics
    SPIE Optics & Photonics San Diego 2-6 Aug 2009 (Invited)
    [Abstract]      
  • 4263 —  T.Aoki, K.Koughia, K.Fujimoto, C.Fujihashi, R.DeCorby, C.Haugen, D.W.Hewak, D.Tonchev, S.KasapObservation of 4F3/2 to 4I15/2 radiative transition in Nd3+ ions in GaLaS glass using frequency-resolved PL spectroscopy
    Physica Status Solidi C: Current Topics in Solid State Physics 2009 Vol.6(S1) pp.S54-S58
    [Abstract]      
  • 4257 —  D.W.Hewak, G.R.Elliott, J.S.Wilkinson, M.N.Zervas, G.S.Murugan, Y.PanitchobChalcogenide glass microspheres and their applications
    8th Pacific rim conference on Ceramic and Glass Technology Vancouver May 31-Jun 5 2009
    [Abstract]      
  • 4177 —  M.A.Hughes, R.J.Curry, D.W.HewakSpectroscopy of titanium-doped gallium lanthanum sulfide glass
    Journal of the Optical Society of America B (JOSA B) 2008 Vol.25(9) pp.1458-1465
    [Abstract]      
  • 4175 —  R.E.Simpson, P.J.Fons, M.Kuwahara, A.Kolobov, J.Tominaga, D.W.Hewak, S.Guerin, B.E.BaydenReduction in crystallization time of Sb:Te films through addition of Bi
    EPCOS 08 Prague 7-9 Sep 2008
    [Abstract]      
  • 4128 —  R.E.Simpson, D.W.Hewak, P.Fons, J.Tominaga, S.Guerin, B.E.HaydenReduction in crystallization time of Sb:Te films through addition of Bi
    Applied Physics Letters 2008 Vol.92(14)
    [Abstract]      
  • 4089 —  G.R.Elliott, D.W.HewakChalcogenide microspheres
    OECC/ACOFT 2008 Sydney 7-10 Jul 2008
    [Abstract]      
  • 4065 —  D.W.HewakThrough thick and thin: Our work with chalcogenide materials, thin films and devices
    6th International Workshop on Nanophotonics Taiwan 10 Mar 2008 (Invited)
    [Abstract]      
  • 4049 —  C.C.Huang, C.-Y.Tai, C.J.Liu, R.E.Simpson, K.Knight, D.W.HewakGermanium antimony sulphide nano-wires fabricated by chemical vapour deposition and e-beam lithography
    NSTI Nanotech 2008 Boston 1-5 Jun 2008 179 Poster
    [Abstract]      
  • 4039 —  D.W.HewakChalcogenide glass for non-linear optics, the shape of things to come
    ISNOG XVI Montpellier 20-25 Apr 2008 (Invited) 
  • 4038 —  A.Benayas, G.R.Elliott, D.Jaque, D.W.HewakSpatially resolved luminescence characterisation of rare earth doped chalcogenide glass microspheres
    ICL '08 Lyon 7-11 Jul 2008
    [Abstract]      
  • 4024 —  D.HewakChalcogenide glass, the shape of things to come
    The American Ceramic Society's 2008 Glass & Optical Materials Division Meeting Tucson 18-21 May 2008 (Invited) 
  • 3902 —  M.S.B.Darby, R.E.Simpson, T.C.May-Smith, D.Hewak, R.W.EasonInfluence of deposition parameters on composition and refractive index of femtosecond and nanosecond pulsed laser deposited gallium lanthanum oxysulphide
    Journal of Non-Crystalline Solids 2008 Vol.354(40-41) pp.4582-4588
    [Abstract]      
  • 3991 —  G.R.Elliott, D.W.Hewak, G.S.Murugan, J.S.WilkinsonChalcogenide glass microspheres; their production characterization and potential
    Optics Express 2007 Vol.15 pp.17542-17553
    [Abstract]      
  • 3950 —  K.C.Silva, O.A.Sakai, A.Steimacher, E.Pedrochi, M.L.Baesso, A.C.Bento, A.N.Medina, S.M.Lima, R.C.Oliveira, J.C.S.Moraes, K.Yukimitu, E.B.Araujo, M.N.Petrovich, D.HewakTemperature and wavelength dependence of the thermo-optical properties of tellurite and chalcogenide glasses
    Journal of Applied Physics 2007 Vol.102(7) pp.Art. No. 073507
    [Abstract]      
  • 3820 —  R.E.Simpson, C.C.Huang, C.J.Liu, C.Y.Tai, D.W.HewakNano-scale sulphide phase change materials and applications
    Nanoscale Physics and Technology IoP, London 26-27 Mar 2007
    [Abstract]      
  • 3819 —  R.E.Simpson, A.Mairaj, R.J.Curry, C.C.Huang, K.Knight, N.Sessions, M.Hassan, D.W.HewakElectrical phase change of Ga:La:S:Cu films
    Electronics Letters 2007 Vol.43(15) pp.830-832
    [Abstract]      
  • 3778 —  M.S.B.Darby, R.E.Simpson, D.W.Hewak, R.W.EasonFemtosecond pulsed laser deposition of amorphous gallium lanthanum oxysulphide films
    COLA 2007 Tenerife 22-28 Sep 2007
    [Abstract]      
  • 3759 —  M.Hughes, W.Yang, D.HewakFabrication and characterization of femtosecond laser written waveguides in chalcogenide glass
    Applied Physics Letters 2007 Vol.90 pp.131113
    [Abstract]      
  • 3735 —  M.Hughes, H.N.Rutt, D.Hewak, R.J.CurrySpectroscopy of vanadium (III) doped gallium lanthanum sulphide chalcogenide glass
    Applied Physics Letters 2007 Vol.90(3) pp.Art. No. 031108
    [Abstract]      
  • 3600 —  M.Hughes, D.W.Hewak, R.J.CurryConcentration dependence of the fluorescence decay profile in transition metal doped chalcogenide glass
    OPTO 2007 San Jose 20-25 Jan 2007
    [Abstract]      
  • 3497 —  C.C.Huang, K.Knight, D.W.HewakAntimony germanium sulphide amorphous thin films fabricated by chemical vapour deposition
    Optical Materials 2007 Vol.29(11) pp.1344-1347
    [Abstract]      
  • 3425 —  C.C.Huang, K.Knight, D.W.HewakGermanium antimony amorphous thin films for phase-change memory applications by chemical vapour deposition
    1st Joint IMST/E-PCOS Grenoble 29-31 May 2006  
  • 3422 —  A.Joyce, D.M.Kane, D.W.HewakLaser cleaning of chalcogenide glass microspheres and shard particles
    EMRS-DTC Technical Conference 2006 Edinburgh 13-14 Jul 2006  
  • 3412 —  C.C.Huang, K.Knight, D.W.HewakGermanium sulphide and antimony germanium sulphide glass thin films fabricated by chemical vapour deposition
    1st International Congress on Ceramics Toronto 25-29 Jun 2006
    [Abstract]      
  • 3369 —  H.Takebe, T.Murakami, M.Kuwabara, D.W.HewakPreparation and properties of La2O3-Ga2S3 glass-ceramics for IR materials
    Journal of Non-Crystalline Solids 2006 Vol.352(23-25) pp.2425-2429
    [Abstract]      
  • 3361 —  J.A.Frantz, J.S.Sanghera, L.B.Shaw, G.Villalobos, I.D.Aggarwal, D.W.HewakSputtered films of Er3+ doped gallium sulphide glass
    Materials Letters 2006 Vol.60(11) pp.1350-1353
    [Abstract]      
  • 3343 —  C.C.Huang, D.W.HewakSilver-doped germanium sulphide glass channel waveguides fabricated by chemical vapour deposition and photo-dissolution process
    Thin Solid Films 2006 Vol.500(1-2) pp.247-251
    [Abstract]      
  • 3818 —  R.E.Simpson, D.W.Hewak, S.Guerin, B.Hayden, G.PurdyHigh throughput synthesis and screening of chalcogenide materials for data storage
    EPCOS '05 Cambridge Sep 2005
    [Abstract]      
  • 3334 —  S.Guerin, M.Hassan, B.Hayden, D.W.Hewak, G.Purdy, R.E.SimpsonMaterial optimisation for optical data storage
    OSA Frontiers in Optics Arizona Oct 2005
    [Abstract]      
  • 3333 —  S.Guerin, B.Hayden, D.W.Hewak, G.Purdy, R.E.SimpsonCombinatorial synthesis and screening of chalcogenide materials for data storage
    PCOS 17th Symposium Japan 17-18 Nov 2005
    [Abstract]      
  • 3320 —  S.Guerin, B.Hayden, D.W.Hewak, G.Purdy, R.SimpsonHigh throughput synthesis and screening of chalcogenide materials for data storage
    Singapore International Chemistry Conference 4 Singapore 8-10 Dec 2005
    [Abstract]      
  • 3123 —  C.C.Huang, D.W.HewakHot-wall chemical vapour deposition (CVD) process for germanium sulphide glass waveguides fabrication
    Glamor 2005 Cambridge 11-13 Apr 2005
    [Abstract]      
  • 3084 —  Y.G.Choi, R.J.Curry, B.J.Park, K.H.Kim, J.Heo, D.W.HewakControlling the fluorescence lifetime of rare earth element in amorphous inorganic solids via very small compositional adjustments
    Journal of Applied Physics 2005 Vol.98(2) pp.23523
    [Abstract]      
  • 3078 —  H.Takebe, R.Kitagawa, D.W.HewakNon-toxic sulfide glasses and thin films for optical applications
    Journal of the Ceramic Society of Japan. Special Issue 'Innovative Ceramics (1)' 2005 Vol.113(1) pp.37-43
    [Abstract]      
  • 3077 —  A.K.Mairaj, R.J.Curry, D.W.HewakInverted deposition and high-velocity spinning technique to develop buried planar chalcogenide glass waveguides for highly nonlinear integrated optics
    Applied Physics Letters 2005 Vol.86(9) pp.94102
    [Abstract]      
  • 3032 —  R.J.Curry, S.W.Birtwell, A.K.Mairaj, X.Feng, D.W.HewakA study of environmental effects on the attenuation of chalcogenide optical fibre
    Journal of Non-Crystalline Solids 2005 Vol.351(6-7) pp.477-481
    [Abstract]      
  • 3030 —  Y.G.Choi, R.J.Curry, B.J.Park, K.H.Kim, J.Heo, D.W.HewakExtreme hypersensitivity observed from 6H15/2 at 6F11/2 transition of Dy3+ in inorganic noncrystalline solids
    Chemical Physics Letters 2005 Vol.403 pp.29-34
    [Abstract]      
  • 2868 —  R.J.Curry, A.K.Mairaj, C.C.Huang, R.W.Eason, C.Grivas, D.W.Hewak, J.V.BaddingChalcogenide glass thin films and planar waveguides
    Journal of the American Ceramic Society 2005 Vol.88(9) pp.2451-2455
    [Abstract]      
  • 2823 —  X.Feng, A.K.Mairaj, D.W.Hewak, T.M.MonroNon-silica glasses for holey fibers
    IEEE Journal of Lightwave Technology 2005 Vol.23(6) pp.2046-2054
    [Abstract]      
  • 3025 —  D.W.HewakFiber and guided wave optics: Fabrication of optical fiber
    Encyclopedia of Modern Optics ISBN 0-12-227600-0 2004 pp.440-445
    [Abstract]      
  • 2996 —  A.Steimacher, A.N.Medina, A.C.Bento, J.H.Rohling, M.L.Baesso, V.C.S.Reynoso, S.M.Lima, M.N.Petrovich, D.W.HewakThe temperature coefficient of the optical path length as a function of the temperature indifferent optical glasses
    Journal of Non-Crystalline Solids 2004 Vol.348 pp.240-244
    [Abstract]      
  • 2984 —  A.K.Mairaj, X.Feng, D.P.Shepherd, D.W.HewakChannel waveguide lasers in a lead silicate glass fashioned using the extrusion technique
    Applied Physics Letters 2004 Vol.85(14) pp.2727-2729
    [Abstract]      
  • 2980 —  S.M.Lima, A.Steimacher, A.N.Medina, M.L.Baesso, M.N.Petrovich, H.N.Rutt, D.W.HewakThermo-optical properties measurements in chalcogenide glasses using thermal relaxation and thermal lens methods
    Journal of Non-Crystalline Solids 2004 Vol.348 pp.108-112
    [Abstract]      
  • 2930 —  C.C.Huang, D.W.Hewak, J.V.BaddingDeposition and characterization of germanium sulphide glass planar waveguides
    Optics Express 2004 Vol.12(11) pp.2501-2505
    [Abstract]      
  • 2929 —  C.C.Huang, D.W.HewakHigh purity germanium sulphide glass for optoelectronic applications synthesized by chemical vapour deposition
    Electronics Letters 2004 Vol.40(14) pp.863-865
    [Abstract]      
  • 2901 —  R.J.Curry, M.Hughes, J.E.Aronson, W.S.Brocklesby, D.HewakVanadium doped chalcogenide glasses for broadband near-infrared sources
    ACerS, Glass & Optical Materials Division Fall Meeting 2004 Florida Nov 2004
    [Abstract]      
  • 2891 —  A.K.Mairaj, R.J.Curry, M.Hughes, R.Simpson, K.Knight, D.W.HewakTowards a compact optical waveguide device for active infrared applications
    SPIE Symposium on Optics and Photonics in Security and Defence London 25-28 Oct 2004 Proc. SPIE 5618-07
    [Abstract]      
  • 2890 —  R.J.Curry, A.Mairaj, M.Hughes, J.E.Aronson, W.S.Brocklesby, D.W.HewakTransition metal doped chalcogenide glasses for broadband near-infrared sources
    SPIE Symposium on Optics and Photonics in Security and Defence London 25-28 Oct 2004
    [Abstract]      
  • 2866 —  A.K.Mairaj, R.J.Curry, D.W.HewakChalcogenide glass thin films through inverted deposition and high velocity spinning
    Electronics Letters 2004 Vol.40(7) pp.421-422
    [Abstract]      
  • 2859 —  R.J.Curry, C.C.Huang, A.K.Mairaj, R.E.Simpson, D.HewakAdvancing the application of planar chalcogenides
    ACerS. Glass & Optical Materials Div., Fall 2004 Meeting Florida Nov 2004
    [Abstract]      
  • 2824 —  X.Feng, A.K.Mairaj, D.W.Hewak, T.M.MonroTowards high-index-glass based monomode holey fibre with large-mode-area
    Electronics Letters 2004 Vol.40(3) pp.167-169
    [Abstract]      
  • 2812 —  J.E.Aronson, C.R.Haythornthwaite, D.W.Hewak, W.S.BrocklesbyOptical spectroscopy of Cr4+-doped chalcogenide glasses
    PREP 2004 Univ of Hertfordshire 5-7 Apr 2004
    [Abstract]      
  • 2763 —  A.K.Mairaj, X.Feng, D.P.Shepherd, D.W.HewakUsing the extrusion technique to fashion amorphous channel waveguide lasers
    CLEO/IQEC 2004 San Francisco 16-21 May 2004 CFM6
    [Abstract]      
  • 2749 —  C.C.Huang, D.W.Hewak, J.V.BaddingDirect synthesis of germanium sulphide glass planar waveguides by chemical vapour deposition (CVD)
    CLEO/IQEC 2004 San Francisco 16-21 May 2004 CThP
    [Abstract]      
  • 2844 —  D.HewakOptical materials
    Current Opinion in Solid State and Material Science 2003 Vol.7(2) pp.87
    [Abstract]      
  • 2723 —  Y.G.Choi, Seo Chung, Park Cho, R.J.Curry, D.Hewak, Lee Kim, D.N.PayneFabrication of single mode selenide optical fibre
    Photonics 2003 (ICAMD) Jeju, Korea 10-12 Dec 2003  
  • 2696 —  X.Feng, T.M.Monro, P.Petropoulos, V.Finazzi, D.HewakSolid microstructured optical fiber
    Optics Express 2003 Vol.11(18) pp.2225-2230
    [Abstract]      
  • 2684 —  A.K.Mairaj, X.Feng, D.W.HewakExtruded channel waveguides in a neodymium-doped lead silicate glass for integrated optic applications
    Applied Physics Letters 2003 Vol.83(17)
    [Abstract]      
  • 2677 —  A.K.Mairaj, C.C.Huang, R.J.Curry, R.W.Eason, C.Grivas, J.V.Badding, D.W.HewakThrough thick and thin: recent developments with chalcogenide films
    The American Ceramic Society: Glass and Optical Materials Division Fall Meeting Corning 12-15 Oct 2003 (Invited)
    [Abstract]      
  • 2632 —  X.Feng, T.M.Monro, P.Petropoulos, V.Finazzi, D.W.HewakSOHO (solid holey) fiber
    ECOC 2003 Rimini 21-25 Sep 2003 We1.7.2
    [Abstract]      
  • 2576 —  C.C.Huang, D.W.Hewak, J.V.BaddingProperties and application of germanium sulphide glass
    PREP 2003 Exeter 14-16 Apr 2003
    [Abstract]      
  • 2495 —  M.N.Petrovich, A.Favre, D.W.Hewak, H.N.Rutt, A.C.Grippo, J.F.Gubeli III, K.C.Jordan, G.R.Neil, M.D.ShinnNear-IR absorption of Ga:La:S and Ga:La:S:O glasses by FEL-based laser calorimetry
    Journal of Non-Crystalline Solids 2003 Vol.326/7 pp.93-97
    [Abstract]      
  • 2452 —  J.Requejo-Isidro, A.K.Mairaj, V.Pruneri, D.W.Hewak, M.C.Netti, J.J.BaumbergSelf refractive nonlinearities in chalcogenide based glasses
    Journal of Non-Crystalline Solids 2003 Vol.317(3) pp.241-246
    [Abstract]      
  • 2935 —  A.S.S.de Camargo, L.A.de Oliveira Nunes, S.M.Lima, T.Catunda, D.HewakA broad look into the spectroscopy of GaLaS chalcogenide glass doped with Nd3+
    XXV Encontro Nacional de Fisica da Materia Condensada Brazil 7-10 May 2002
    [Abstract]      
  • 2528 —  A.S.S.de Camargo, S.L.de Oliveira, D.F.de Sousa, L.A.O.Nunes, D.W.HewakSpectroscopic properties and energy transfer parameters of Tm3+ ions in gallium lanthanum sulfide glass
    Journal of Physics - Condensed Matter 2002 Vol.14(41) pp.9495-9505
    [Abstract]      
  • 2485 —  S.M.Lima, A.S.S.de Camargo, L.A.O.Nunes, T.Catunda, D.W.HewakFluorescence quantum efficiency measurements of excitation and nonradiative deexcitation processes of rare earth 4f-states in chalcogenide glasses
    Applied Physics Letters 2002 Vol.81(4) pp.589-591
    [Abstract]      
  • 2479 —  A.K.Mairaj, R.J.Curry, D.W.HewakDirect laser written channel and spin-coated thin film waveguides in an amorphous chalcogenide (Ga:La:S)
    Photonics Conference 2002 Korea 30 Oct - 1 Nov 2002 T2E6 pp.143-144
    [Abstract]      
  • 2478 —  A.K.Mairaj, D.W.HewakOptical channel waveguides in a chalcogenide (Ga:La:S) glass fabricated through short wavelength (lambda=244nm) illumination
    ICOCN (International Conference on Optical Networks) Singapore 11-14 Nov 2002 14D pp.334-337
    [Abstract]      
  • 2476 —  A.K.Mairaj, A.M.Chardon, D.P.Shepherd, D.W.HewakLaser performance and spectroscopic analysis of optically written channel waveguides in neodymium-doped gallium lanthanum sulphide glass
    IEEE Journal of Selected Topics in Quantum Electronics 2002 Vol.8(6) pp.1381-1388
    [Abstract]      
  • 2453 —  A.K.Mairaj, P.Hua, H.N.Rutt, D.W.HewakFabrication and characterization of continuous wave direct UV (lambda=244nm) written channel waveguides in chalcogenide (Ga:La:S) glass
    IEEE Journal of Lightwave Technology 2002 Vol.20(8) pp.1578-1584
    [Abstract]      
  • 2440 —  A.K.Mairaj, C.Riziotis, A.M.Chardon, P.G.R.Smith, D.P.Shepherd, D.W.HewakDevelopment of channel waveguide lasers in Nd3+-doped chalcogenide (Ga:La:S) glass through photoinduced material modification
    Applied Physics Letters 2002 Vol.81(20) pp.3708-3710
    [Abstract]      
  • 2425 —  D.W.HewakOptical materials
    Current Opinion in Solid State and Materials Science 2002 Vol.5(2001) pp.469-470
    [Abstract]      
  • 2424 —  D.J.Richardson, J.H.Lee, Z.Yusoff, W.Belardi, K.Furusawa, J.H.V.Price, M.Kiang, K.Frampton, D.Hewak, J.A.Tucknott, R.C.Moore, H.N.Rutt, T.M.MonroHoley fibers for nonlinear fiber devices
    Optical Amplifiers and Their Applications (OAA) 2002 Vancouver 14-17 Jul 2002 (Invited)
    [Abstract]      
  • 2417 —  M.N.Petrovich, A.Favre, D.W.Hewak, H.N.Rutt, A.C.Grippo, J.F.Gubeli III, K.C.Jordan, G.R.Neil, M.D.ShinnNear-IR absorption of Ga:La:S and Ga:La:S:O glasses by FEL-based laser calorimetry
    XIIIth International Symposium on Non-Oxide Glasses and New Optical Glasses (ISNOG 2002) Pardubice, Czech Republic 9-13 Sep 2002
    [Abstract]      
  • 2415 —  K.M.Kiang, K.Frampton, T.M.Monro, M.N.Petrovich, R.Moore, J.H.Lee, Z.Yusoff, J.Tucknott, D.W.Hewak, H.N.Rutt, D.J.RichardsonExtrusion of high nonlinearity single-mode holey optical fibers
    The American Ceramic Society, Glass & Optical Materials Division Fall Meeting Pittsburgh 13-16 Oct 2002
    [Abstract]      
  • 2383 —  T.M.Monro, K.M.Kiang, J.H.Lee, K.Frampton, Z.Yusoff, R.Moore, J.Tucknott, D.W.Hewak, H.N.Rutt, D.J.RichardsonHigh nonlinearity extruded single-mode holey optical fibers
    OFC 2002 Anaheim 19-21 Mar 2002 FA1-1 (Postdeadline)
    [Abstract]      
  • 2364 —  K.M.Kiang, K.Frampton, T.M.Monro, R.Moore, J.Tucknott, D.W.Hewak, D.J.Richardson, H.N.RuttExtruded single-mode non-silica glass holey optical fibres
    Electronics Letters 2002 Vol.38(12) pp.546-547
    [Abstract]      
  • 2004 —  A.S.S.de Camargo, S.L.de Oliveira, D.F.de Souza, L.A.de Oliveira-Nunes, D.W.HewakSpectroscopic properties and energy transfer parameters of Tm3+ ions in GaLaS chalcogenide glass
    Annals of Optics Sao Paulo: Sociedade Brasileira de Fisica 2002 pp.89-92 (XXV Encontro Nacional de Fisica da Materia Condensada, Brazil, 7-10 May, 2002)
    [Abstract]      
  • 2933 —  A.S.S.de Camargo, S.M.Lima, T.Catunda, L.A.de Oliveira Nunes, D.HewakEnergy transfer between localized and delocalized states rare-earth doped chalcogenide glasses
    XXIV Encontro Nacional de Fisica da Materia Condensada Sao Lourenco 15-19 May 2001
    [Abstract]      
  • 2318 —  T.Schweizer, F.Goutaland, E.Martins, D.W.Hewak, W.S.BrocklesbySite-selective spectroscopy in dysprosium-doped chalcogenide glasses for 1.3 μm optical fiber amplifiers
    Journal of the Optical Society of America B 2001 Vol.18(10) pp.1436-1442
    [Abstract]      
  • 2283 —  A.K.Mairaj, A.Fu, H.N.Rutt, D.W.HewakOptical channel waveguide in chalcogenide (Ga:La:S) glass
    Electronics Letters 2001 Vol.37(19) pp.1160-1161
    [Abstract]      
  • 2206 —  M.Petrovich, A.K.Mairaj, D.W.Hewak, H.N.RuttTemperature dependence of reversible photodarkening in Ga:La:S and Ga:La:S:O glass fibres
    XIX International Congress on Glass Edinburgh 1-6 Jul 2001 2 pp.951-952
    [Abstract]      
  • 2187 —  S.M.Lima, J.A.Sampaio, T.Catunda, A.S.S.de Camargo, L.A.O.Nunes, M.L.Baesso, D.W.HewakSpectroscopy, thermal and optical properties of Nd3+ -doped chalcogenide glasses
    Journal of Non-Crystalline Solids 2001 Vol.284 pp.274-281
    [Abstract]      
  • 2147 —  D.W.Hewak, Y.D.West, N.G.R.Broderick, T.M.Monro, D.J.RichardsonThe fabrication and modelling of non-silica microstructured optical fibres
    OFC 2001 Anaheim 17-22 Mar 2001
    [Abstract]      
  • 2101 —  D.W.Hewak, A.K.Mairaj, M.N.Petrovich, Y.D.WestApplication of novel glass for the next generation of optical fibre devices
    Photonics 2000 Calcutta Dec 2000 W.371
    [Abstract]      
  • 2076 —  T.M.Monro, Y.D.West, D.W.Hewak, N.G.R.Broderick, D.J.RichardsonChalcogenide holey fibres
    Electronics Letters 2000 Vol.36(24) pp.1998-2000
    [Abstract]      
  • 2043 —  N.G.R.Broderick, P.J.Bennett, D.Hewak, T.M.Monro, D.J.Richardson, Y.D.WestNonlinearity in holey optical fibres
    LEOS 2000 Puerto Rico 13-16 Nov 2000 (Invited)
    [Abstract]      
  • 2041 —  A.K.Mairaj, M.N.Petrovich, D.J.Brady, D.W.Hewak, Y.D.West, T.SchweizerGallium lanthanum sulphide fibre for device applications in the infrared
    Photonics 2000 UMIST Manchester 4-5 Jul 2000
    [Abstract]      
  • 2001 —  A.Mairaj, D.Hewak, D.J.Brady, P.Jander, T.Schweizer, Y.D.West, M.N.PetrovichAdvances in modified gallium lanthanum sulphide (Ga:La:S) glass for optical fibre devices
    SPIE : Infrared Optical Fibres and Their Applications Boston 5-8 Nov 2000 4204A
    [Abstract]      
  • 1906 —  Y.D.West, T.Schweizer, D.J.Brady, D.W.HewakGallium lanthanum sulphide fibres for infrared transmission
    Fiber and Integrated Optics 2000 Vol.19(3) pp.229-250
    [Abstract]      
  • 1889 —  H.Takebe, D.J.Brady, D.Hewak, K.MorinagaThermal properties of Ga2S3-based glass and their consideration during fiber drawing
    Journal of Non-Crystalline Solids 1999 Vol.258(3) pp.239-243
    [Abstract]      
  • 1881 —  D.Brady, N.Fagan, D.W.J.Harwood, M.J.Hesford, D.Hewak, B.Hudson, R.C.Moore, D.N.Payne, T.Schweizer, E.R.Taylor, J.A.Tucknott, C.J.Voyce, E.Weatherby, Y.WestOptical amplifiers and lasers in infrared fibres
    Infrared Optical Fibres and Their Applications Boston 21-22 Sep 1999
    [Abstract]      
  • 1762 —  T.Schweizer, B.N.Samson, J.R.Hector, W.S.Brocklesby, D.W.Hewak, D.N.PayneInfrared emission from holmium doped gallium lanthanum sulphide glass
    Infrared Physics and Technology 1999 Vol.40 pp.329-335
    [Abstract]      
  • 1740 —  T.Schweizer, B.N.Samson, J.R.Hector, W.S.Brocklesby, D.W.Hewak, D.N.PayneInfrared emission and ion-ion interactions in thulium and terbium doped gallium lanthanum sulphide glass
    Journal of the Optical Society of America B 1999 Vol.16(2) pp.308-315
    [Abstract]      
  • 2451 —  S.Smolorz, X.Liu, L.Qian, F.Wise, J.Wang, D.Brady, D.Hewak, D.N.PayneReduction of optical nonlinearities of Ga-La-S glasses for active fibre applications through addition of CsCl
    Electronics Letters 1998 Vol.34(23) pp.2268-2269
    [Abstract]      
  • 2021 —  H.Yayama, S.Fujino, H.Takebe, K.Morinaga, D.W.HewakRefractive index dispersion of gallium lanthanum sulfide and oxysulfide glasses
    Journal of Non-Crystalline Solids 1998 Vol.239 pp.187-191
    [Abstract]      
  • 1884 —  D.J.Brady, T.Schweizer, J.Wang, D.W.HewakMinimum loss predictions and measurements in gallium lanthanum sulphide based glasses and fibre
    Journal of Non-Crystalline Solids 1998 Vol.242 pp.92-98
    [Abstract]      
  • 1773 —  J.R.Hector, J.Wang, D.Brady, M.Kluth, D.W.Hewak, W.S.Brocklesby, D.N.PayneSpectroscopy and quantum efficiency of halide-modified gallium-lanthanum sulfide glasses doped with praseodymium
    Journal of Non-Crystalline Solids 1998 Vol.239 pp.176-180
    [Abstract]      
  • 1771 —  D.W.HewakProgress towards a 1300 nm fibre amplifier
    IEE Colloquium - New Developments in Optical Amplifiers 1998
    [Abstract]      
  • 1755 —  D.N.Payne, D.Hewak, E.R.TaylorProgress in the development of efficient 1.3μm fibre amplifiers
    ECOC '98 Symposium Madrid 20-24 Sep 1998 3 (Invited)
    [Abstract]      
  • 1690 —  D.J.Brady, T.Schweizer, D.W.HewakGallium lanthanum sulphide glasses for mid infrared fibre applications
    PacRim3 Kyongju Korea 20-23 Sep 1998 16-5
    [Abstract]      
  • 1667 —  D.W.Hewak, D.Brady, T.Schweizer, J.Wang, J.Hector, C.R.Haythornthwaite, W.S.Brocklesby, D.N.PayneApplication of novel chalcogenide glasses based on gallium and lanthanum sulphides in optical fibre devices
    International Congress on Glass San Francisco 7-9 Jul 1998
    [Abstract]      
  • 1666 —  D.W.Hewak, D.Brady, T.SchweizerGallium lanthanum sulphide fibre for active and passive applications
    SPIE Proc: Infrared Glass Optical Fibers and Their Applications Quebec Canada 13-16 Jul 1998 3416 1998 pp.124-132 (Invited)
    [Abstract]      
  • 1622 —  B.N.Samson, T.Schweizer, J.R.Hector, W.S.Brocklesby, D.W.HewakMultiphonon decay rates in chalcogenide glasses
    Advances in Photonic Glasses PacRim3 Kyongju Korea 20-23 Sep 1998
    [Abstract]      
  • 1613 —  E.Martins, T.Schweizer, W.S.Brocklesby, D.W.HewakThe effect of oxide on the spectroscopic properties of the 1.3, 1.7 and 2.9μm transitions in dysprosium-doped gallium-lanthanum-sulphide glass
    CLEO/Europe '98 Glasgow Scotland 13-18 Sep 1998 Poster CWF37
    [Abstract]      
  • 1572 —  T.Schweizer, P.E.A.Möbert, J.R.Hector, D.W.Hewak, W.S.Brocklesby, D.N.Payne, G.HuberOptical measurement of narrow band rare-earth 4f levels with energies greater than the bandgap of the host
    Physical Review Letters 1998 Vol.80(7) pp.1537-1540
    [Abstract]      
  • 1569 —  T.Schweizer, J.R.Hector, D.Brady, J.Wang, D.Hewak, W.S.Brocklesby, D.N.PayneVisible upconversion in rare-earth doped gallium lanthanum sulphide based glasses
    CIMTEC '98 9th International Conference on Modern Materials & Technologies Florence Italy June 14-19 1998 SX-2:LO2
    [Abstract]      
  • 1511 —  D.W.Hewak, D.N.PaynePhotonic applications of sulphide glass optical fibres
    IOOC/ECOC '97 Edinburgh 22-25 Sep 1997 (Invited)
    [Abstract]      
  • 1503 —  T.Schweizer, D.J.Brady, D.W.HewakFabrication and spectroscopy of erbium doped gallium lanthanum sulphide glass fibres for mid-infrared laser applications
    Optics Express 1997 Vol.1(4) pp.102-107
    [Abstract]      
  • 1502 —  T.Schweizer, D.J.Brady, B.N.Samson, D.W.Hewak, D.N.PayneProgress towards mid-infrared fibre lasers in rare-earth doped gallium lanthanum sulphide glass for gas sensing and remote sensing
    QE13 Cardiff 8-11 Sep 1997 Technical digest pp.21
    [Abstract]      
  • 1501 —  D.J.Brady, T.Schweizer, J.Wang, D.W.HewakGallium lanthanum sulphide based glass fibres for passive MIR delivery applications
    QE13 Cardiff 8-11 Sep 1997 Technical digest pp.16
    [Abstract]      
  • 1468 —  H.Takebe, H.Yayama, K.Morinaga, D.W.Hewak, S.FujinoRefractive index dispersion of gallium lanthanum sulfide and oxysulfide glasses
    12th International Conference on Optical Fiber Sensors Williamsburg USA 28-31 Oct 1997 17 JsuE10 83
    [Abstract]      
  • 1460 —  D.HewakTravelling light: The development of unusual new glasses is driving optical fibres into an expanding range of important useful and surprising applications
    Chemistry in Britain 1997 Vol.33(5) pp.26-29
    [Abstract]      
  • 1444 —  J.Wang, J.R.Hector, D.Brady, D.Hewak, W.S.Brocklesby, M.Kluth, R.Moore, D.N.PayneHalide-modified Ga-La sulfide glasses with improved fibre-drawing and optical properties for Pr3+-doped fibre amplifiers at 1.3μm
    Applied Physics Letters 1997 Vol.71(13) pp.1753-1755
    [Abstract]      
  • 1412 —  B.N.Samson, T.Schweizer, D.W.Hewak, R.I.LamingProperties of dysprosium doped GaLaS fibre amplifiers operating at 1.3μm
    Optics Letters 1997 Vol.22(10) pp.703-705
    [Abstract]      
  • 1411 —  B.N.Samson, T.Schweizer, R.C.Moore, D.W.Hewak, D.N.PayneNeodymium doped chalcogenide glass fibre laser
    CLEO Pacific Rim '97 Chiba Japan 14-18 Jul 1997 TuP4
    [Abstract]      
  • 1409 —  D.W.Hewak, R.C.Moore, T.Schweizer, J.Wang, B.N.Samson, W.S.Brocklesby, D.N.PayneGallium lanthanum sulphide optical fibre for active and passive applications
    Annual Meeting of the American Ceramic Society Cincinnati Ohio 4-7 May 1997 G-009-97 pp.317
    [Abstract]      
  • 1397 —  C.C.Ye, M.Hempstead, D.W.Hewak, D.N.PayneProposal for an Er3+-doped chalcogenide glass fiber upconversion laser operating at 980nm and pumped at 1480nm
    IEEE Photonics Technology Letters 1997 Vol.9(8) pp.1104-1106
    [Abstract]      
  • 1360 —  T.Schweizer, B.N.Samson, R.C.Moore, D.W.Hewak, D.N.PayneRare-earth doped chalcogenide glass fibre laser
    Electronics Letters 1997 Vol.33(5) pp.414-416
    [Abstract]      
  • 1359 —  T.Schweizer, D.W.Hewak, B.N.Samson, D.N.PayneSpectroscopy of potential mid-infrared laser transitions in gallium lanthanum sulphide glass
    Journal of Luminescence 1997 Vol.72(4) pp.419-421
    [Abstract]      
  • 1354 —  H.Takebe, K.Yoshino, T.Murata, K.Morinaga, J.Hector, W.S.Brocklesby, D.W.Hewak, J.Wang, D.N.PayneSpectroscopic properties of Nd3+ and Pr3+ in gallate glasses with low-phonon energies
    Applied Optics 1997 Vol.36(24) pp.5839-5843
    [Abstract]      
  • 1353 —  J.R.Hector, W.S.Brocklesby, D.W.HewakQuantum efficiency measurements in oxygen-containing gallium lanthanum sulphide glasses and fibers doped with Pr3+
    IEEE Photonics Technology Letters 1997 Vol.9(4) pp.443-445
    [Abstract]      
  • 1316 —  T.Schweizer, B.N.Samson, D.W.Hewak, D.N.PayneNeodymium doped gallium lanthanum sulphide glass fibre laser
    CLEO '97 Baltimore Maryland 18-23 May 1997 CWQ4
    [Abstract]      
  • 1284 —  V.Pruneri, P.G.Kazansky, D.Hewak, J.Wang, H.Takebe, D.N.PayneFrequency doubling in Ga:La:S optical glass with microcrystals
    Applied Physics Letters 1997 Vol.70 pp.155-157
    [Abstract]      
  • 1257 —  J.R.Hector, J.Wang, D.Brady, M.Kluth, D.W.Hewak, W.S.Brocklesby, D.N.PayneSpectroscopy and quantum efficiency of halide-modified gallium-lanthanum sulphide glasses doped with praseodymium
    12th International Conference on Optical Fibre Sensors Williamsburg 28-31 Oct 1997  
  • 1347 —  R.S.Brown, W.S.Brocklesby, D.W.Hewak, B.N.SamsonThe effect of oxide on the spectroscopic properties of praseodymium 1.3μm transition in gallium-lanthanum-sulphide glass
    Journal of Luminescence 1996 Vol.66-7 pp.278-284
    [Abstract]      
  • 1237 —  D.W.Hewak, T.Schweizer, J.Hector, J.Wang, B.N.Samson, W.S.BrocklesbyProperties of rare-earth doped gallium lanthanum sulphide glass
    ICL'96 Prague 1996 P4-140
    [Abstract]      
  • 1225 —  T.Schweizer, D.W.Hewak, B.N.Samson, D.N.PayneSpectroscopic data of the 1.8, 2.9 and 4.3 μm transitions in dysprosium-doped Ga:La:S glass
    Optics Letters 1996 Vol.21(19) pp.1594-1596
    [Abstract]      
  • 1224 —  T.Schweizer, D.W.Hewak, B.N.Samson, D.N.PayneSpectroscopy of potential mid-infrared laser transitions in gallium lanthanum sulphide glass
    ICL'96 Prague 1996 04-May  
  • 1198 —  T.Schweizer, D.W.Hewak, D.N.Payne, T.Jensen, G.HuberNeodymium-doped gallium lanthanum sulphide glass laser
    CLEO Europe Hamburg Sep 1996 CFD3 328
    [Abstract]      
  • 1197 —  T.Schweizer, D.W.Hewak, D.N.Payne, T.Jensen, G.HuberRare-earth doped chalcogenide glass laser
    Electronics Letters 1996 Vol.32(7) pp.666-667
    [Abstract]      
  • 1193 —  H.Takebe, T.Murata, H.Nishida, D.W.Hewak, K.MorinagaCompositional dependence of optical properties of Nd3+ in gallate glasses
    Journal of the Ceramic Society of Japan 1996 Vol.104(3) pp.243-246
    [Abstract]      
  • 1153 —  D.W.Hewak, R.C.Moore, T.Schweizer, J.Wang, B.N.Samson, W.S.Brocklesby, D.N.Payne, E.J.TarboxGallium lanthanum sulphide optical fibre for active and passive applications
    10th International Symposium on Non-Oxide Glasses Corning NY 1996 30 157-62
    [Abstract]      
  • 1142 —  J.Wang, D.Hewak, W.S.Brocklesby, D.N.PayneModifying binary Ga2S3-La2S3 glass by the addition of a third component
    10th International Non-oxide Glass Conference Corning USA Jun 1996 8
    [Abstract]      
  • 1137 —  C.C.Ye, D.W.Hewak, M.Hempstead, B.N.Samson, D.N.PayneSpectral properties of Er3+-doped gallium lanthanum sulphide glass
    Journal of Non-Crystalline Solids. 1996 Vol.208 pp.56-63
    [Abstract]      
  • 1136 —  D.W.Hewak, R.C.Moore, T.Schweizer, J.Wang, B.N.Samson, W.S.Brocklesby, D.N.Payne, E.J.TarboxGallium lanthanum sulphide optical fibre for active and passive applications
    Electronics Letters 1996 Vol.32(4) pp.384-385
    [Abstract]      
  • 989 —  J.A.Madeiros-Neto, E.R.Taylor, J.Wang, B.N.Samson, D.W.Hewak, R.I.Laming, D.N.Payne, E.J.Tarbox, P.D.Maton, G.M.Roba, B.E.Kinsman, R.HanneyThe application of Ga:La:S-based glass for optical amplification at 1.3μm
    Journal of Non-Crystalline Solids 1995 Vol.184 pp.292-296
    [Abstract]      
  • 923 —  D.W.HewakNew glasses for active fibre devices
    QE12 Southampton 4-8 Sep 1995 (Invited) 
  • 918 —  A.Jha, M.Naftaly, S.Jordery, B.N.Samson, E.R.Taylor, D.Hewak, D.N.Payne, M.Poulain, G.ZhangDesign and fabrication of Pr3+ doped fluoride glass optical fibres for efficient 1.3 micron amplifiers
    Pure & Applied Optics 1995 Vol.4 pp.417-424
    [Abstract]      
  • 896 —  B.Dussardier, D.W.Hewak, B.N.Samson, H.Tate, J.Wang, D.N.PaynePr3+-doped Cs:Ga:S:Cl glass for efficient 1.3μm optical fibre amplifier
    Electronics Letters 1995 Vol.31(3) pp.206-208
    [Abstract]      
  • 888 —  J.A.Madeiros-Neto, D.W.Hewak, H.TateApplication of a modified Judd-Ofelt theory to praseodymium doped fluoride glasses
    Journal of Non-Crystalline Solids 1995 Vol.183 pp.201-207
    [Abstract]      
  • 833 —  E.R.Taylor, B.N.Samson, D.W.Hewak, J.A.Madeiros-Neto, D.N.Payne, S.Jordery, M.Naftaly, A.JhaCadmium mixed halide glass for optical amplification at 1.3μm
    Journal of Non-Crystalline Solids 1995 Vol.184 pp.61-67
    [Abstract]      
  • 485P —  R.W.Eason, D.S.Gill, A.A.Anderson, D.W.Hewak, R.C.Moore, S.Mailis, N.Vainos, A.HatziapostolouCharacterisation of compositional photosensitivity dependence of Ga-La-S thin films fabricated by pulsed laser deposition
    ULF-LENS Annual Report 1994-1995 1995
    [Abstract]      
  • 1100 —  D.W.Hewak, W.A.GamblingNew glasses for active fibre devices
    1st International workshop on Materials for Optoelectronics (invited) Sheffield 22-23 Aug 1995 (Invited)
    [Abstract]      
  • 1075 —  D.N.Payne, R.I.Laming, D.W.HewakTowards pump-efficient 1.3μm fibre amplifiers
    OAA '95 Davos Switzerland 15-17 Jun 1995 18 SaA4 pp.200-201 (Invited)
    [Abstract]      
  • 1055 —  W.A.Gambling, D.W.HewakProspects for new glass-based optical waveguide devices
    International Workshop on Advanced Materials for Multifunctional Waveguides Makuhari Japan 9-10 Jul 1995 (invited) Makuhari Japan 9-10 Jul 1995 (Invited)
    [Abstract]      
  • 1050 —  C.C.Ye, D.W.Hewak, M.Hempstead, B.N.Samson, D.N.PayneSpectral properties of Er3+-doped chalcogenide glasses
    QE12 Southampton 4-8 Sep 1995 P1-33
    [Abstract]      
  • 985 —  A.Jha, M.Naftaly, S.Jordery, B.N.Samson, E.R.Taylor, D.W.Hewak, D.N.Payne, M.Poulain, M.D.BaroDesign and fabrication of Pr-doped fluoride glass optical fibres for efficient 1.3μm amplifiers
    Euro Cost Workshop '94 - Optical Telecommunications Nice France 17-21 Apr 1994 pp.95-98
    [Abstract]      
  • 984 —  M.D.Baro, A.Otero, S.Surinach, A.Jha, S.Jordery, M.Poulain, A.Soufiane, D.W.Hewak, E.R.Taylor, D.N.PayneThermal properties and crystallization kinetics of new fluoride glasses
    Materials Science and Engineering-A 1994 Vol.179/180 pp.303-308
    [Abstract]      
  • 861 —  I.Abdulhalim, C.N.Pannell, R.S.Deol, D.W.Hewak, G.Wylangowski, D.N.PayneHigh performance acousto-optic chalcogenide glass based on Ga2S3-La2S3 systems
    Journal of Non-Crystalline Solids 1994 Vol.164-166(Pt.2) pp.1251-1254
    [Abstract]      
  • 859 —  B.N.Samson, J.A.Medeiros-Neto, R.I.Laming, D.W.HewakDysprosium doped Ga:La:S glass for an efficient optical fibre amplifier operating at 1.3μm
    Electronics Letters 1994 Vol.30(19) pp.1617-1619
    [Abstract]      
  • 855 —  D.W.Hewak, B.N.Samson, J.A.Medeiros-Neto, R.I.Laming, D.N.PayneEmission at 1.3 microns from dysprosium-doped Ga:La:S glass
    Electronics Letters 1994 Vol.30(12) pp.968-970
    [Abstract]      
  • 848 —  D.N.Payne, J.Wang, D.W.HewakNovel glasses for optical-fibre device applications
    Abstract for 9th Int. Symposium on Non-Oxide Glasses (Halide Glasses) Hangzhou China 24-28 May 1994
    [Abstract]      
  • 813 —  D.S.Gill, C.Zaldo, R.W.Eason, D.W.Hewak, J.A.Medeiros Neto, H.N.RuttFabrication and application of Ga:La:S glasses at the University of Southampton
    Society of Glass Technology, UK Special Interest Group: Glasses for Optoelectronics Photosensitive Glasses. BNR Europe Ltd, Harlow 15-Apr 1994  
  • 782 —  E.R.Taylor, B.N.Samson, D.W.Hewak, J.A.Madeiros-Neto, D.N.Payne, S.Jordery, M.Naftaly, A.JhaCadmium mixed halide glass for optical amplification at 1.3μm
    9th International Symposium on Non-Oxide Glasses Hangzhou China 10-14 May 1994 25-PM-B3 pp.80
    [Abstract]      
  • 781 —  J.A.Madeiros-Neto, J.Wang, B.N.Samson, B.Dussardier, D.W.Hewak, E.R.Taylor, R.I.Laming, D.N.PayneThe application of Ga:La:S-based glasses for optical amplification at 1.3μm
    9th International Symposium on Non-Oxide Glasses Hangzhou China 10-14 May 1994
    [Abstract]      
  • 764 —  D.W.Hewak, R.I.Laming, J.A.Madeiros-Neto, B.N.Samson, J.Wang, B.Dussardier, E.R.Taylor, K.P.Jedrzejewski, G.Wylangowski, D.N.Payne, E.J.Tarbox, P.D.Maton, G.M.Roba, B.Kinsman, R.HanneyApplication of chalcogenide glasses for optical fibre amplifiers at 1.3μm
    UK IT Forum Conference Heriot-Watt University 22-23 Mar 1994 Digest pp.67-74
    [Abstract]      
  • 749 —  D.W.Hewak, J.A.Madeiros-Neto, B.N.Samson, R.S.Brown, K.P.Jedrzejewski, J.Wang, E.R.Taylor, R.I.Laming, G.Wylangowski, D.N.PayneQuantum efficiency of praseodymium-doped Ga:La:S glass for 1.3μm optical fibre amplifiers
    IEEE Photonics Technology Letters 1994 Vol.6(5) pp.609-612
    [Abstract]      
  • 987 —  M.Naftaly, A.Jha, D.W.Hewak, W.S.Brocklesby, B.N.Samson, D.N.PayneMultiphonon relaxation in low phonon-energy Pr3+ glasses
    11th UK National Quantum Electronics Conference (QE-11) Belfast Aug-Sep 1993
    [Abstract]      
  • 765 —  A.Jha, M.Naftaly, S.Jordery, B.N.Samson, D.W.Hewak, D.N.PayneOptical and thermal properties of CdF2-based glasses for 1.3μm Pr-doped optical fibre amplifiers
    2nd International Conference on Fundamentals of Glass Science and Technology European Society of Glass Science and Technology Venice Italy Jun 1993
    [Abstract]      
  • 730 —  D.W.Hewak, J.A.Madeiros-Neto, B.N.Samson, J.Wang, H.J.Tate, A.Pearson, W.S.Brocklesby, G.Wylangowski, D.N.Payne, A.Jha, M.Naftaly, S.Jordery, M.PoulainSpectroscopy of Pr3+-doped low phonon-energy glasses based on halides and sulphides
    Invited Paper to SPIE Conference on Spectroscopy Boston Massachusetts 7-10 Sep 1993 (Invited)
    [Abstract]      
  • 729 —  D.W.Hewak, B.N.Samson, J.A.Madeiros-Neto, J.Wang, K.P.Jedrzejewski, G.Wylangowski, E.R.Taylor, D.N.Payne, M.Naftaly, S.Jordery, A.Jha, M.D.Baro, E.J.Tarbox, P.D.Maton, G.M.Roba, B.E.Kinsman, R.HanneyApplication of low phonon-energy glasses for optical amplification at 1.3μm
    SPIE Conference Fibre Laser Sources and Amplifiers V Boston Massachusetts 7-10 Sep 1993
    [Abstract]      
  • 725 —  B.N.Samson, M.Naftaly, D.Hewak, S.Jordery, J.A.Madeiros-Neto, H.J.Tate, R.I.Laming, A.Jha, R.S.Deol, D.N.PaynePr3+-doped mixed halide glasses for 1.3μm fibre amplifiers
    4th Topical Meeting on Optical Amplifiers and Their Applications Yokohama Japan 4-6 Jul 1993 14 Paper TuA4 pp.252-255
    [Abstract]      
  • 720 —  I.Abdulhalim, C.N.Pannell, R.S.Deol, D.W.Hewak, G.Wylangowski, D.N.PayneHigh performance acousto-optic chalcogenide glass based on Ga2S3-La2S3 systems
    15th International Conference on Amorphous Semiconductors Cambridge 6-10 Sep 1993
    [Abstract]      
  • 707 —  M.D.Baro, A.Otero, S.Surinach, A.Jha, S.Jordery, M.Poulain, R.S.Deol, D.W.Hewak, D.N.PayneThermal properties and devitrification kinetic studies of low phonon-energy halide glasses
    Submitted to Rapid Solidification Conference Japan Aug 1993
    [Abstract]      
  • 706 —  A.Jha, S.Jordery, M.D.Baro, A.Otero, S.Surinach, M.Poulain, R.S.Deol, D.W.Hewak, D.N.PayneEvaluation of crystal nucleation and growth from kinetics and viscosity data of new halide glasses
    Submitted to Rapid Solidification Conference Japan 1993
    [Abstract]      
  • 674 —  D.W.Hewak, R.S.Deol, J.Wang, G.Wylangowski, J.A.Madeiros-Neto, B.N.Samson, R.I.Laming, W.S.Brocklesby, D.N.Payne, A.Jha, M.Poulain, S.Otero, S.Surinach, M.D.BaroLow phonon-energy glasses for efficient 1.3μm optical fibre amplifiers
    Electronics Letters 1993 Vol.29(2) pp.237-239
    [Abstract]      
  • 670 —  J.A.Madeiros-Neto, D.W.Hewak, A.D.Pearson, B.N.Samson, H.Tate, R.S.Deol, W.S.Brocklesby, D.N.Payne, A.Jha, M.Poulain, M.D.BaroRadiative and non-radiative properties of praseodymium-doped glass
    Conference on Lasers & Electro-Optics (CLEO '93) Baltimore Maryland 2-7 May 1993 11 Poster Paper CThS14 pp.498-500
    [Abstract]      
  • 988 —  R.S.Deol, D.W.Hewak, S.Jordery, A.Jha, M.Poulain, M.D.Baro, D.N.PayneImproved fluoride glasses for 1.3μm optical amplifiers
    8th Intl Symposium on Halide Glasses France 22-24 Sep 1992
    [Abstract]      
  • 642 —  E.R.Taylor, D.W.Hewak, D.N.PayneStructure and optical properties of rare-earth-doped glasses
    Optical Materials Symposium of the Glass and Optical Materials Meeting of the American Ceramic Society Stone Mountain Georgia 16-19 Aug 1992 71 pp.1049  

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