Optical: systems and elements – Optical amplifier – Raman or brillouin process
Reexamination Certificate
2006-10-03
2006-10-03
Hellner, Mark (Department: 3663)
Optical: systems and elements
Optical amplifier
Raman or brillouin process
Reexamination Certificate
active
07116471
ABSTRACT:
A system and method for providing eye-safety protection during operation of distributed Raman amplifiers based on the application of continuous out-of-band amplified spontaneous scattering (ASS) monitoring in an optical communication network span coupled to the Raman amplifier, and real-time detection and analysis of changes in the monitored ASS power level, The system includes at least one Raman pump for introducing Raman energy into the span, a monitoring unit for performing the continuous ASS monitoring, and a control unit operative to detect and analyze in real-time changes in the ASS power, and upon determination that such changes indicate an open span, to reduce the level of the Raman pump energy entering the span to a safe level.
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Berger Daniel
Filiba Itzhak
Ghera Uri
Menashe David
Bolda Eric
Friedman Mark M.
Hellner Mark
Redc Optical Networking Ltd.
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