Skip to main content
Article thumbnail
Location of Repository

Advances in modified gallium lanthanum sulphide (Ga:La:S) glass for optical fibre devices

By A. Mairaj, D. Hewak, D.J. Brady, P. Jander, T. Schweizer, Y.D. West and M.N. Petrovich


The advantages of gallium lanthanum sulphide (GLS) based glass over other competing glasses for active and infrared applications are evident through its low-phonon energy, high rare-earth solubility, high transition temperature and non-toxicity. However this glass often devitrifies during fibre drawing due to a small separation between the crystallisation and fibre drawing temperatures. Improving GLS fabrication technology may hold the key to achieving practical optical waveguide devices. In this paper, we describe the current GLS research status, methods of improving glass purity and our directions toward alternatives to traditional fibre technology, in particular planar channel waveguides and holey or microstructured fibres

Topics: QC, TK
OAI identifier:
Provided by: e-Prints Soton

Suggested articles


  1. (1995). Characterisation of dispersion properties in planar waveguides using UV-induced Bragg Gratings”,
  2. (1994). Direct UV writing of buried waveguides in Ge-doped silica films”,
  3. (1997). Fabrication and spectroscopy of erbium doped gallium lanthanum sulphide glass fibres for mid-infrared laser applications”,
  4. (2000). Gallium Lanthanum Sulphide Fibre for Infrared Transmission”,
  5. (1996). Gallium lanthanum sulphide optical fibre for active and passive applications”,
  6. (1996). Gill “Fabrication and characterisation of thin film optical waveguides by pulsed laser deposition”,
  7. (1995). Gill et al “Characterisation of Ga-La-S chalcogenide glass thin-film optical waveguides, fabricated by pulsed laser deposition”,
  8. (1997). Halide-modified Ga-La sulfide glasses with improved fibre-drawing and optical properties for Pr3+-doped fibre amplifiers at 1.3 µm”,
  9. (1999). Holey optical fibres: An efficient modal model”,
  10. (1989). Infrared Optical Fibres”,
  11. (1974). Lithium niobate ridge waveguide modulator”,
  12. (1998). Minimum loss predictions and measurements in gallium lanthanum sulphide based glasses and fibre”,
  13. (2000). Optical Amplification at 1.3µm in a Praseodymium-Doped Sulfide-Glass Fibre”,
  14. (1972). Optical waveguide formed by electrically induced migration of ions in glass plates”,
  15. (1992). Pr 3+:La-Ga-S glass: A promising material for 1.3µm fibre amplification”,
  16. (1997). Properties of dysprosium doped GaLaS fibre amplifiers operating at 1.3µm”,
  17. R.W.Eason “Pulsed laser deposition of Ga-La-S chalcogenide thin film optical waveguides”,
  18. (1997). Rare-earth doped chalcogenide glass fibre laser”
  19. (1999). Single-mode photonic band-gap guidance of light in air”,
  20. (1996). Spectroscopic data of the 1.8, 2.9 and 4.3µm transitions in dysprosium-doped
  21. (1997). Spectroscopy of potential mid-infrared laser transitions in gallium lanthanum sulphide glass”,
  22. (1999). Toward practical holey fibre technology: fabrication, splicing, modeling and characterization”,
  23. (1992). UV written 1.5µm reflection filters in single-mode planar silica guides”,

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.