Optical: systems and elements – Optical amplifier – Raman or brillouin process
Reexamination Certificate
2005-02-01
2005-02-01
Hellner, Mark (Department: 3663)
Optical: systems and elements
Optical amplifier
Raman or brillouin process
C359S341330, C398S021000
Reexamination Certificate
active
06850360
ABSTRACT:
Fiber-optic communications systems are provided for optical communications networks. Fiber-optic communications links may be provided that use spans of transmission fiber to carry optical data signals on wavelength-division-multiplexing channels at different wavelengths. Raman pump light may be used to provide Raman amplification for the optical data signals. The Raman pump light may be used to make measurements on the spans of transmission fiber. Raman pump light may be modulated to make optical time domain reflectometry measurements and measurements of the Raman gain coefficient in the fiber. Information on the measurements made using the Raman pump light may be used to control the Raman pump light during operation of the communications link and may be provided to a network management system.
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Chen Chien-Jen
Wong William S.
Bookham, Inc.
Hellner Mark
Treyz G. Victor
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