Optical communications – Diagnostic testing – Determination of communication parameter
Reexamination Certificate
2007-02-06
2007-02-06
Chan, Jason (Department: 2613)
Optical communications
Diagnostic testing
Determination of communication parameter
C398S120000, C398S123000, C398S137000, C398S162000, C398S195000, C398S206000, C398S209000, C398S213000, C372S038010, C372S029020, C372S029010, C372S029011
Reexamination Certificate
active
10337617
ABSTRACT:
Systems and methods for regulating optical power are described. A system for regulating optical power includes a laser driver circuit that receives an enable/disable signal and a data modulator input. The enable/disable signal regulates asynchronous mode operation. The system also includes a laser module including a laser diode emitter and a photodiode detector. The laser module is coupled to the laser driver circuit and receives a laser bias current from the laser driver circuit. The system also includes a switch coupled to the photodiode to receive a signal from the photodiode detector. The system also includes an automatic power control (APC) feedback circuit that receives a signal from the switch and provides a laser bias current feedback signal to the laser driver circuit to compensate for power output changes in the laser diode emitter over time.
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Chinn Stephen R.
Lee Philip A.
Roberge James K.
Blakely , Sokoloff, Taylor & Zafman LLP
Chan Jason
Leung Danny Wai Lun
Network Appliance Inc.
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