Patent ID: 7813651
Filing Date: 2010-10-12
Classification: G02F,H03C,H04B

Abstract:
1. A device, comprising: an input port to receive an input microwave or RF signal; a tunable laser to produce a continuous-wave laser beam and to tune a laser frequency of the laser beam; a first optical path to receive a first portion of the laser beam; a second optical path to receive a second portion of the laser beam, the second optical path comprising: an optical modulator to modulate the second portion in response to the input signal to produce a modulated optical beam that carries the input signal, and an optical filter to filter the modulated optical beam to select at least one spectral component in the input signal while rejecting other spectral components and to output a filtered modulated optical beam that carries the at least one selected spectral component; a tuning control unit to tune the laser frequency of the tunable laser to change a frequency of the at least one selected spectral component; and an optical detector to combine the first portion from the first optical path and the filtered modulated optical beam from the second optical path and to produce a filtered output signal comprising the at least one selected spectral component.