Patent ID: 6104492
Filing Date: 2000-08-15
Classification: H04B

Abstract:
An optical spectrum monitor comprisinga temperature tuned silicon-etalon narrow band filter for scanning wavelength bands of an input multiwave optical signal selected in response to a temperature control signal;an optical signal modulator, having at least a microsecond operating rate, for modulating the input multiwave optical signal at a rate determined by a received high frequency electrical signal;a synchronous detector for detecting the modulated multiwave optical signal in synchronism with the high frequency electrical signal and for generating in response thereto the amplitude of the input multiwave optical signal; anda controller for generating the temperature control signal for selecting the wavelength band being scanned by the silicon-etalon filter and responsive to the amplitude of the input multiwave optical signal for determining the amplitude of the input multiwave optical signal as a function of the scanned wavelength band.