Phase-diverse coherent optical spectrum analyzer

Optics: measuring and testing – By light interference – Having light beams of different frequencies

Reexamination Certificate

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Reexamination Certificate

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07068374

ABSTRACT:
A phase-diverse coherent optical spectrum analyzer is presented. An optical receiver receives a first input signal and a second input signal, and produces at least a first output signal, a second output signal, and a third output signal based on mixing the first input signal and the second input signal. A processing unit isolates heterodyne components from the first output signal, the second output signal and the third output signal, wherein the heterodyne components comprise a first signal and a second signal that represent the phase-diverse nature of the optical mixing process. Phase diversity of the heterodyning between the first input signal and the second input signal is achieved by the coherent optical spectrum analyzer.

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European Search Report Dated: May 4, 2005.

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