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Published July 6, 1992 | public
Journal Article Open

Fast high-efficiency integrated waveguide photodetectors using novel hybrid vertical/butt coupling geometry

Abstract

We report a novel coupling geometry for integrated waveguide photodetectors−a hybrid vertical coupling/butt coupling scheme that allows the integration of fast, efficient, photodetectors with conventional double heterostructure waveguides. It can be employed to yield a planar, or pseudo-planar, surface that supports further levels of integration. The approach is demonstrated with a 25-µm-long p-i-n detector integrated with an InP/InGaAsP/InP waveguide, which displays a high (~90%) efficiency and large (~15 GHz) bandwidth. This is the fastest high-efficiency integrated waveguide photodetector reported to date.

Additional Information

© 1992 American Institute of Physics. Received 12 March 1992; accepted 7 May 1992. We wish to thank W.K. Chan and J.R. Hayes for helpful discussions, P.J. Rickmann for graphic assistance, and W. Sessa for loan of the lightwave analyzer.

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