Inverted deposition and high-velocity spinning technique to develop buried planar chalcogenide glass waveguides for highly nonlinear integrated optics

Mairaj, A.K., Curry, R.J. and Hewak, D.W. (2005) Inverted deposition and high-velocity spinning technique to develop buried planar chalcogenide glass waveguides for highly nonlinear integrated optics. Applied Physics Letters, 86 (1), 0941021-3. (doi:10.1063/1.1856686).

Record type: Article

Abstract

We report on buried planar waveguides in a highly nonlinear infrared transmitting chalcogenide glass, fabricated using a combination of inverted deposition of the molten glass phase and high-velocity spinning. Films of gallium lanthanum sulphide (Ga:La:S) glass were deposited onto an expansion coefficient matched Ga:La:S cladding substrate. These amorphous films, with an optimized composition designed to be resistant against crystallization, were observed to have an excellent interface quality and uniformity.
The designed planar chip had a buried core, 6 micron thick in the vertical direction, in single-mode operation at 1.064 micron and a measured propagation loss of <0.2 dB cm^-1. Through this technique waveguides from Ga:La:S glass, a highly versatile optical semiconductor material, can potentially be used in nonlinear applications as well as provide passive and active integrated optic functionality into the infrared beyond 5 micron.

This record has no associated files available for download.