Patent ID: 8532486

Claim:
An apparatus comprising: a dispersive fiber optical loop for delaying a first and second sideband, relative to each other, of a light modulated by a radio frequency signal to create a pair of pulses; a coupler for tapping a replica of the pair of pulses from the loop; and an auto-correlation module, coupled to the coupler, for correlating the replica of the pair of pulses with each other, a first switch for generating a loop pulse from the modulated light; a second switch, coupled to the first switch, for permitting entry of the loop pulse into the loop; an amplifier, coupled to the fiber optical loop, for amplifying the remaining loop pulse in the optical fiber loop; and a photo-detector, coupled to the coupler, for generating a plurality of first and second RF signal from the replicated pair of pulses; and a Fast-Fourier Transform (FFT) module, coupled to the auto-correlation module, for performing an FFT on a plurality of correlated pair of pulses, generating a channelized frequency spectrum based.