Patent Number: 6,169,838

Title: Athermal waveguide grating based device having a temperature compensator in the slab waveguide region

Abstract: A device for compensating the temperature sensitivity normally associated with an integrated optical waveguide grating device has a temperature compensating slab waveguide region. This compensating region is provided within the slab waveguide region normally present in the grating device by modifying a sub-region of a predetermined shape and dimension to change its temperature coefficient of refractive index. This method and device can be applied to reflective and transmissive diffraction gratings and to phased array waveguide gratings.

Inventors: He; Jian-Jun (Ottawa, Ontario, CA), Koteles; Emil S. (Ottawa, Ontario, CA)


International Classification: G02B 6/125 (20060101); G02B 6/12 (20060101); G02B 6/10 (20060101); G02B 6/126 (20060101); G02B 6/34 (20060101); G02B 006/10 (); G02F 001/295 ()

Expiration Date: 01/02/2018