Optical communications – Transmitter – Having particular modulation
Reexamination Certificate
2011-07-26
2011-07-26
Vanderpuye, Ken N (Department: 2613)
Optical communications
Transmitter
Having particular modulation
C398S140000, C398S195000, C398S198000, C398S209000
Reexamination Certificate
active
07986885
ABSTRACT:
An optical communication device such as a transmitter or receiver has a control loop for controlling relative phase of two related optical signals based on signal peak intensity. An optical transmitter measures the signal peak intensity of a combined optical signal representing two data channels to adjust relative phase as desired. An optical receiver measures the signal peak intensity of combined electrical signals, single electrical signals or single optical signals to adjust relative phase as desired. Signal peak intensity is minimized or maximized by adjusting the relative phase, depending upon the modulation configuration used. The feedback control provides a consistent and robust control to stabilize the optical communication device in the presence of variables such as temperature changes, aging and manufacturing tolerances.
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Laurentano Anthony A.
Mintera Corporation
Nelson Mullins Riley & Scarborough LLP
Vanderpuye Ken N
Woldekidan Hibret A
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