Optical: systems and elements – Optical amplifier – Raman or brillouin process
Reexamination Certificate
2006-04-18
2006-04-18
Hellner, Mark (Department: 3663)
Optical: systems and elements
Optical amplifier
Raman or brillouin process
C359S341440, C398S013000, C398S014000, C398S015000, C398S021000
Reexamination Certificate
active
07031049
ABSTRACT:
Power of scattered light separated from an optical transmission path is monitored, part of the excitation light is separated and power thereof is monitored, power of reflected light which passes in a direction opposite to a direction in which signal light passes through the optical transmission path is monitored, and, when monitored power of an excitation light reaches a predetermined determination value, whether or not any loss point occurs is determined, based on a ratio between the monitored power of the scattered light and the monitored power of the reflected light.
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Goto Ryosuke
Kamada Takashi
Sekiya Motoyoshi
Diacou Ari M.
Hellner Mark
Staas & Halsey , LLP
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