Integrated waveguide having an internal optical grating

Details Integrated waveguide having an internal optical grating Integrated waveguide having an internal optical grating

1995-06-27

1997-08-19

Lee, John D.

Optical waveguides

Integrated optical circuit

359575, 385131, G02B 6124

Patent

active

056596405

ABSTRACT:
A method for forming an optical grating within a waveguide integrated on a substrate includes the step of depositing on a substrate successive layers of material constituting a waveguide such that the waveguide has a periodically varying width along a portion of its longitudinal axis. The deposition may be accomplished by depositing by selective area epitaxy at least some of the successive layers through a mask having a periodically varying width along at least one edge. The successive layers deposited through the mask may constitute a plurality of quantum well layers separated from each other by barrier layers which collectively form a multiple quantum well stack.

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