Optical semiconductor device
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United States of America Patent
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Oct 20, 1998
Issued Date -
N/A
app pub date -
Sep 16, 1994
filing date -
Dec 27, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical semiconductor device comprises a stripe-mesa structure provided on a semi-insulating substrate. The stripe-mesa structure comprises an undoped light absorption layer sandwiched by cladding layers, and by burying layers on both sides. With this structure, the device capacitance is decreased to provide wide bandwidth and ultra-high speed operation properties. This device can be applied to an optical modulator, an integrated type optical modulator, and an optical detector.
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