Patent ID: 8213807

Claim:
A tunable photonic channelizer, comprising: an optical signal generator configured to provide a first optical signal having a frequency; an optical modulator configured to receive the first optical signal from the optical signal generator and accept an input of radio frequency information, the modulator further configured to modulate the first optical signal with the accepted radio frequency information, and to output a modulated version of the first optical signal as a second optical signal, the modulator comprising a plurality of electrically tunable phase-shifted fiber Bragg gratings configured to receive the second optical signal, to filter the second optical with a bandwidth that is less than or equal to 10 MHz, and to output a filtered version of the second optical signal as a plurality of third optical signals, the modulator further configured to measure an ambient temperature at the fiber Bragg gratings and provide a feedback signal; a plurality of detectors configured to respectively accept the plurality of third optical signals and recover the radio frequency information from the respective third signals; and a feedback loop coupled between the modulator and the optical signal generator, the feedback loop configured to provide the feedback signal to the optical signal generator; wherein the optical signal generator is further configured to float the frequency of the first optical signal in response to the feedback signal.