Integrated waveguide/photodiodes using vertical impedance matching
- 30 April 1990
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 56 (18), 1737-1739
- https://doi.org/10.1063/1.103084
Abstract
A novel ‘‘vertical impedance matching’’ approach is demonstrated to improve absorption in evanescently coupled, integrated waveguide/photodiodes by 500% over conventional structures. Our devices exhibit both high absorption at short length (90% at 190 μm) and efficient fiber butt coupling (42%) at 1.3–1.55 μm wavelengths. Unusual transient phenomena are observed in such impedance-matched devices and discussed theoretically.Keywords
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