Enhanced link operation of directly modulated lasers using gain-coupled gratings
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United States of America Patent
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Jan 31, 2006
Grant Date -
Jun 5, 2003
app pub date -
Dec 26, 2001
filing date -
Nov 28, 2001
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Abstract
Increasing the gain-coupling of a DFB directly modulated semiconductor laser permits the output response to be overdamped without lowering the relaxation oscillation frequency of the output. The overdamping permits the laser to operate at modulation frequencies which approach the relaxation oscillation frequency with satisfactory error performance. The performance improvement is sufficient to permit operation of the laser in an uncooled environment.
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