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Published October 15, 2017 | Published
Journal Article Open

Vertically integrated spot-size converter in AlGaAs-GaAs

Abstract

We report on the demonstration of a spot size converter (SSC) for monolithic photonic integration at a wavelength of 850 nm on a GaAs substrate. We designed and fabricated a dual-waveguide AlGaAs chip. The design consists of a lower waveguide layer for efficient end-fire coupling to a single-mode fiber, an upper waveguide layer for high refractive index contrast waveguides, and a vertical SSC to connect the two waveguide layers. We measured a SSC conversion efficiency of 91% (or −0.4  dB) between the upper and lower waveguide layers for the TE mode at a wavelength of 850 nm.

Additional Information

© 2017 Optical Society of America. Received 11 August 2017; accepted 14 September 2017; posted 18 September 2017 (Doc. ID 304327); published 11 October 2017. Funding: Canadian Microelectronics Corporation Microsystems (CMC); Natural Sciences and Engineering Research Council of Canada (NSERC); Collaborative Research and Training Experience (CREATE) program of Canada.

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Created:
August 19, 2023
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October 17, 2023