Control system for use with DBR lasers
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United States of America Patent
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Feb 24, 2004
Grant Date -
N/A
app pub date -
May 5, 2000
filing date -
May 5, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a system and method for dynamically increasing the numeric gain applied to the temperature loop in a DBR laser control system in response to the anticipated wavelength change that occurs as a tuning current ramp is in progress. In accordance with a preferred embodiment of the invention, the feedback control signal to the laser's TEC is overcompensated for, and as a result, the system is forced to respond much faster, thermally, to the anticipated wavelength shift, thus providing improved real time wavelength stabilization to the control system. The implementation of the increased numeric gain can be carried out through software and/or firmware.
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