Optical: systems and elements – Optical amplifier
Reexamination Certificate
2005-09-22
2008-11-25
Keith, Jack W (Department: 3663)
Optical: systems and elements
Optical amplifier
C398S026000, C359S483010
Reexamination Certificate
active
07457032
ABSTRACT:
An arrangement has a WDT (Wavelength-Dependent Tap) coupled in an OCS (Optical Communication System) and an OPM (Optical Performance Monitoring) function coupled to the WDT. The WDT is adapted to receive from the OCS an input optical signal having noise and channels at respective channel wavelengths. The WDT couples to an output some of the input optical signal at the channel wavelengths and most of a noise power at wavelengths between the channel wavelengths, and couples a remaining portion of the input optical signal back into the optical communication system. The optical performance monitoring function determines a power characteristic of the input optical signal as a function of a power from the output. The power characteristic may be an OSNR (Optical Signal-to-Noise Ratio) determined as a function of a signal power and a noise power of the output optical signal.
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Qiao Lijie
Vella Paul J.
BTI Photonic Systems Inc.
Diacou Ari M
Keith Jack W
LandOfFree
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