Patent ID: 6310703
Filing Date: 2001-10-30
Classification: H04B,H04J,H04Q

Abstract:
An apparatus for analyzing an optical spectrum in wavelength division multiplexed fiber optic systems, comprising:a tunable channel selector having an input and an output;a ratiometric wavelength and power detection system optically connected to the output of the tunable channel selector; and, a controller connected to the tunable channel selector and the wavelength and power detection system wherein the ratiometric wavelength and power detection system includes: an optical splitter optically connected to the output of the tunable channel selector for splitting an optical signal into at least two branches; a first filter in one of the at least two branches and a first detector connected to an output of the first filter and a second detector located in the other of the at least two branches, the first and second detectors each having an output; and a divider circuit to divide the output of the one of the detectors by the output of the other detector.