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Published April 1977 | Published
Journal Article Open

Parallel end-butt coupling for optical integrated circuits

Abstract

The method of parallel end-butt coupling has been used to couple GaAs laser diodes to Ta 2O5 thin film waveguides. Theoretical caluclations predict that a coupling efficiency into the lowest order waveguide mode of 90% is achievable if the thicknesses of the waveguide (tg) and the laser light emitting layer (tL) are equal. Experimentally, efficiencies as high as 45.1% have been measured for laser and waveguide combinations with t/tL = 0.34. The tolerance to misalignment of the laser and waveguide has been theoretically and experimentally evaluated.

Additional Information

© Copyright 1977 Optical Society of America Received 5 August 1976. This work was supported by the Air Force Avionics Laboratory, Air Force Systems Command, United States Air Force, Wright-Patterson AFB, Ohio, under contract F33615-75-C-1024.

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August 22, 2023
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