Sampled grating distributed Bragg reflector laser controller
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United States of America Patent
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Oct 11, 2005
Grant Date -
Jul 15, 2004
app pub date -
May 15, 2002
filing date -
May 15, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A controller for use with sampled grating distributed Bragg reflector (SGDBR) lasers is presented. An exemplary controller includes a table of settings representing a control surface, each setting corresponding to a separate operating point of the SGDBR laser, a first mirror current controller and a second mirror current controller. The first mirror controller and the second mirror current controller respectively control a first mirror current and a second mirror current about an estimated extremum point of the control surface to substantially maintain alignment between each of a first mirror and a second mirror, and an associated cavity mode. The first mirror current and the second mirror current can be locked at a substantially fixed distance from the extremum of the control surface.
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