Directly modulated laser optical transmission system
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United States of America Patent
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Dec 16, 2008
Grant Date -
Dec 8, 2005
app pub date -
Mar 15, 2005
filing date -
Mar 19, 2004
priority date (Note) -
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Abstract
An optical transmitter for generating a modulated optical signal for transmission over dispersive fiber optic links in which a broadband analog radio frequency signal input is applied to a modulation circuit for directly modulating a semiconductor laser with the analog signal input. The transmitter may further include a temperature sensor in proximity to the laser and a negative feedback control circuit coupled to the temperature sensor for adjusting the temperature of the laser in response to an output characteristic of the laser, such as linearity.
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