Optical communications – Diagnostic testing – Determination of communication parameter
Reexamination Certificate
2007-09-18
2007-09-18
Li, Shi K (Department: 2613)
Optical communications
Diagnostic testing
Determination of communication parameter
C398S038000
Reexamination Certificate
active
11546334
ABSTRACT:
Provided is an optical apparatus and method wherein power transfer coefficients arising from SRS are measured at a designated co-location point and the power of dithers, which are impressed on the channels of a multiplexed optical signal propagating through the optical apparatus, is measured at each co-location point. Within the optical apparatus distances between co-location points are short and the power transfer coefficients are effectively constant. Consequently, the power of each channel of the multiplexed optical signal at the co-location points is obtained from the power of the dithers at a respective one of the co-location points and the power transfer coefficients measured at the designated co-location point. In some embodiments, information on the channel power at the co-location points is used to provide instructions for compensating for fluctuations in channel power and/or channel count at an input and/or channel count within the optical apparatus.
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Boertjes David W.
Roberts Kim B.
Li Shi K
Nortel Networks Limited
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