Patent ID: 8934058
Filing Date: 2015-01-13
Classification: H04B

Abstract:
1. A signal digitizing system based on analog-to-time optical mapping, comprising: an optical pulse source for producing a train of optical pulses; an amplitude tunable filter (ATF) adapted to optically map the amplitude information of the analog signal to wavelength information by impressing on the train of optical pulses spectral changes induced by the amplitude information of the analog signal; a dispersive element adapted to optically map the wavelength information to temporal information by broadening the train of optical pulses in the time domain received from the ATF to produce a train of optical pulses encoded with the temporal information in the time domain; an optical-to-electrical converter adapted to convert the train of optical pulses from the dispersive element to a train of electrical waveforms encoded with the temporal information in the time domain; an analog-to-digital converter (ADC) adapted to digitize the train of electrical waveforms from the optical-to-electrical converter into a digital image and resolve the temporal information in the time domain; and a digital signal processor (DSP) for digital signal processing the digital image using the resolved temporal information to produce a digital reconstruction of the analog signal.