Texas Instruments Corporation

Other

Lily Y Pang

Gary Alan Evans

Jerome K Butler

Philip A Congdon

Tsen-Hwang Lin

Charles L Goldsmith

David J Seymour

Charles M Rhoads

Gary A Evans

Bill R Norvell

Billy Powers, Jr

Bradley M Kanack

A grating ( ) couples the waveguide region ( ) of a semiconductor laser ( ) to a dielectric waveguide ( ). The waveguide region of the laser includes a mirror ( ) at one end thereof and an absorber ( ) at the other end thereof. The dielectric waveguide includes a reflector ( ) therein to reflect a portion of the light coupled from the laser to the dielectric waveguide back into the laser waveguide region.

Single wavelength semiconductor laser with grating-assisted dielectric waveguide coupler

A grating (,) assisted coupling of a semiconductor waveguide to a dielectric waveguide (,) is provided with one or more reflective stacks (,) to enhance the coupling efficiency. The glass or dielectric core (,) may be efficiently butt-coupled to the core of an optical fiber (,). A laser and semiconductor waveguide, reflective stacks coupling grating, and dielectric waveguide are integrated on a single substrate. Further, multiple lasers (,) with differing lasing frequencies may be integrated and their outputs grating coupled into a single dielectric waveguide (,) for wavelength division multiplexing.

Substrate stack construction for enhanced coupling efficiency of optical couplers

A grating (,) couples the waveguide region (,) of a semiconductor laser (,) to a dielectric waveguide (,). The waveguide region of the laser includes a mirror (,) at one end thereof and an absorber (,) at the other end thereof. The dielectric waveguide includes a reflector (,) therein to reflect a portion of the light coupled from the laser to the dielectric waveguide back into the laser waveguide region.

A grating (461) coupling the output of a semiconductor laser (410) in a semiconductor waveguide to a dielectric waveguide (451) having a core (458) which may be efficiently butt-coupled to the core of an optical fiber (470); the laser and semiconductor waveguide, coupling grating, and dielectric waveguide are integrated on a single substrate. Further, multiple lasers (410, 420, 430, 440) with differing lasing frequencies may be integrated and their outputs grating coupled into a single dielectric waveguide (450) for wavelength division multiplexing.

Integrated laser and coupled waveguide

Micromechanical microwave switches with both ohmic and capacitive coupling of rf lines and integration in multiple throw switches useful in microwave arrays.

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McKinney, TX, United States of America

Lily Y Pang