Optical signal-to-noise monitor having increased coherence

Details Optical signal-to-noise monitor having increased coherence Optical signal-to-noise monitor having increased coherence

2006-09-12

2006-09-12

Lauchman, Layla G. (Department: 2877)

Optics: measuring and testing

By polarized light examination

Reexamination Certificate

active

07106443

ABSTRACT:
Methods and apparatus for rapid, accurate OSNR measurements by directly measuring the spectrally-resolved State of Polarization (SOP) variation across each DWDM channel and using a polarization controller to deterministically extinguish the signal across narrow frequency subbands within each DWDM channel. In-band ASE noise is subsequently measured as a function of frequency across the channel bandwidth.

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