Optical communications – Diagnostic testing – Determination of communication parameter
Reexamination Certificate
2006-12-05
2006-12-05
Hughes, Deandra M. (Department: 3663)
Optical communications
Diagnostic testing
Determination of communication parameter
C398S181000
Reexamination Certificate
active
07146100
ABSTRACT:
A Raman amplifier repeater comprising a Raman excitation light production/answer signal superimposition unit for producing a first reply signal for a down-direction line with respect to a monitor control command, an answer signal production unit for producing a second reply signal with respect to the monitor control command, and a command reply switch for selectively using the first reply signal when an optical signal passing through a down-direction line on a second terminal station side is inputted as an answer signal with respect to the monitor control command and the second reply signal when the optical signal is not inputted through the second terminal station side down-direction line. With this configuration, high-quality monitor control is feasible even if a disconnection/break trouble occurs in an optical fiber in conducting the optical amplification repeating by the Raman amplification.
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Fujitsu Limited
Hughes Deandra M.
Staas & Halsey , LLP
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