Multi-channel DWDM transmitter based on a vertical cavity surface emitting laser
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United States of America Patent
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Sep 30, 2003
Grant Date -
Jul 25, 2002
app pub date -
Mar 20, 2001
filing date -
Jan 19, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multi-channel light source for use with a wavelength division multiplexed optical communication system includes a modified vertical cavity surface emitting laser (VCSEL) including a gain region and a resonator reflector layer at a first end for coupling with an optical fiber. An optical or electrical pumping source excites a gain region of the laser. An external cavity couples at a second end of the modified VCSEL and has a mirrored end for forming a resonant cavity with the resonator reflector layer permitting the light source to produce a multi-channel optical signal. The modified VCSEL has a cavity length that is substantially extended compared with a conventional VCSEL.
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