Title :
First- and second-order Bragg gratings in single-mode planar waveguides of chalcogenide glasses
Author :
Saliminia, Ali ; Villeneuve, Alain ; Galstyan, Tigran V. ; LaRochelle, Sophie ; Richardson, Kathleen
Author_Institution :
Centre d´´Opt., Photonique et Laser, Laval Univ., Que., Canada
fDate :
5/1/1999 12:00:00 AM
Abstract :
First- and second order Bragg reflectors at telecommunication wavelength (1.5 μm) were fabricated in single-mode monolayer (As2S3) and multilayer (AsSSe-AsS) chalcogenide glass (ChG) planar waveguides with near bandgap illumination using an interferometric technique. Reflectivities as high as 90% near 1555 nm, and index modulations up to 3×10-4 were achieved. The volume photodarkening effect is the principal mechanism involved in the formation of the Bragg gratings
Keywords :
Bragg gratings; chalcogenide glasses; light interferometry; monolayers; optical films; optical glass; optical modulation; optical planar waveguides; photochromism; reflectivity; refractive index; 1.5 mum; 1555 nm; As2S3; AsSSe-AsS; Bragg grating formation; chalcogenide glass; first-order Bragg gratings; first-order Bragg reflectors; index modulations; interferometric technique; multilayer chalcogenide glass planar waveguides; principal mechanism; reflectivities; second order Bragg reflectors; second-order Bragg gratings; single-mode monolayer planar waveguides; single-mode planar waveguides; telecommunication wavelength; volume photodarkening effect; Bragg gratings; Glass; Holographic optical components; Holography; Optical films; Optical refraction; Optical variables control; Optical waveguides; Planar waveguides; Silicon compounds;
Journal_Title :
Lightwave Technology, Journal of
