Optical communications – Transmitter – Having particular modulation
Reexamination Certificate
2011-02-01
2011-02-01
Vanderpuye, Ken N (Department: 2613)
Optical communications
Transmitter
Having particular modulation
C398S190000, C398S191000, C398S141000, C398S157000
Reexamination Certificate
active
07881620
ABSTRACT:
An arrangement for generating beat notes with a relatively high signal-to-noise ratio (SNR) utilizes a pulsed laser source coupled into a section of post-processed highly-nonlinear optical fiber (HNLF) to generate a frequency comb having one or more regions of enhanced spectral power. A second laser signal source is overlapped with the frequency comb to form one or more “beat notes” at difference frequencies(y) between the second source and the continuum comb. By virtue of the post-processing, areas of spectral enhancement are formed along the comb, and are positioned to interact with the second laser signal to generate optical beat notes. The second laser signal may be from an external source (forming beat notes from a signal “outside” of the comb), or may be a frequency-multiplied version of the generated supercontinuum (forming beat notes from a signal “within” the comb).
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Nicholson Jeffrey W.
Westbrook Paul S.
Koba Wendy W.
OFS Fitel LLC
Vanderpuye Ken N
Woldekidan Hibret A
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