Coherent light generators – Particular resonant cavity – Distributed feedback
Patent
1995-05-23
1997-08-19
Bovernick, Rodney B.
Coherent light generators
Particular resonant cavity
Distributed feedback
372 46, H01S 319
Patent
active
056595689
ABSTRACT:
The present invention provides a low noise multimode VCSEL that can be used to transmit data reliably on multimode optical media at data rates up to and exceeding 1 gigabit per second with bit error rates less than 1.times.10.sup.-9 errors/bit. In contrast to conventional multimode lasers where optimal mirror reflectivity is designed for maximum power output, in the present invention mirror reflectivity is increased to a point where the output power is less than half the maximum output power. Preferably, the reflectivity of the first and second mirror regions of the multimode laser is high, typically greater than 99.5%.
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Hahn Kenneth H.
Tan Michael R.
Wang Shih-Yuan
Weber Andreas
Bovernick Rodney B.
Hewlett--Packard Company
Lee Denise A.
Sang Yisun
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