Coherent light generators – Particular beam control device – Optical output stabilization
Reexamination Certificate
2005-01-04
2005-01-04
Harvey, Minsun Oh (Department: 2828)
Coherent light generators
Particular beam control device
Optical output stabilization
C372S022000, C372S029010, C372S029011, C372S029015, C372S029020
Reexamination Certificate
active
06839366
ABSTRACT:
A dithering signal is superimposed on a laser frequency control signal. In this way, laser frequency control may be achieved by employing measurements from a single photodetector. By sampling synchronously to the dithering signal, it is possible to generate both the magnitude end sign of the current frequency error based on the output of a single photodetector. This reduces the number of components required to generate an optical signal and is particularly advantageous in WDM systems where laser frequency control components may be duplicated over a large number of channels.
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Cisco Technology Inc.
Flores-Ruiz Delma R.
Harvey Minsun Oh
Ritter Lang & Kaplan LLP
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