1.5 μm InGaAsP/InP vertically coupled semiconductor optical pre-amplifier
- 2 September 1991
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 59 (10), 1141-1143
- https://doi.org/10.1063/1.105537
Abstract
Vertical coupling of light output from a stripe InGaAsP/InP laser amplifier to the bottom of the substrate for detection by means of a 45° mirror has been demonstrated. The composite-cavity amplifier structure is shown to have an inherent low facet reflectivity and unidirectional amplification property. With a fiber-to-detector gain of 15.4 dB and a nearly diffraction-limited output spot size, the device is suitable for compact integration with a photodetector as an optical pre-amplifier in a high bit-rate direct detection system.Keywords
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