Optically interleaved photonic analog to digital converters
First Claim
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1. A processor, comprising:
- a phase modulator the photonic processor configured to receive a first electronic signal and an optical reference signal and provide a phase modulated optical pulse signal;
an array of signal optical switches for receiving the phase modulated optical pulse signal and providing a set of time deinterleaved sampled phase modulated optical pulse signals;
an array of reference optical switches for receiving a reference pulse signal and providing a set of reference time deinterleaved reference pulse signals;
an array of optical demodulators each configured to receive a respective time deinterleaved phase modulated optical pulse signal of the time deinterleaved sampled phase modulated optical pulse signals on a respective signal path and a respective time deinterleaved reference pulse signal of the time de-interleaved reference pulse signals on a respective reference path, wherein each of the demodulators is configured to perform demodulation and to provide a respective optical demodulated signal;
an array of photoconverters each configured to receive the respective optical demodulated signal and to provide a respective second electronic signal corresponding to the respective optical demodulated signal; and
an array of track and hold amplifiers each for receiving the second respective electric signal and providing a respective deinterleaved electronic signal.
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Abstract
A method of and system of processing a phase-modulated optical signal includes performing, by demodulators, demodulation of the phase-modulated optical signal and outputting optical demodulated signals. The processing further includes performing, by pairs of gated photo detectors respectively connected to the I/Q demodulators, photo detection of the demodulated signals. The processing further tracks and holds electronicversions of the demodulated signals with a track and hold amplifier.
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Citations
21 Claims
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1. A processor, comprising:
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a phase modulator the photonic processor configured to receive a first electronic signal and an optical reference signal and provide a phase modulated optical pulse signal; an array of signal optical switches for receiving the phase modulated optical pulse signal and providing a set of time deinterleaved sampled phase modulated optical pulse signals; an array of reference optical switches for receiving a reference pulse signal and providing a set of reference time deinterleaved reference pulse signals; an array of optical demodulators each configured to receive a respective time deinterleaved phase modulated optical pulse signal of the time deinterleaved sampled phase modulated optical pulse signals on a respective signal path and a respective time deinterleaved reference pulse signal of the time de-interleaved reference pulse signals on a respective reference path, wherein each of the demodulators is configured to perform demodulation and to provide a respective optical demodulated signal; an array of photoconverters each configured to receive the respective optical demodulated signal and to provide a respective second electronic signal corresponding to the respective optical demodulated signal; and an array of track and hold amplifiers each for receiving the second respective electric signal and providing a respective deinterleaved electronic signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of quantization, the method comprising:
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performing phase modulation and providing a phase-modulated optical pulse signal; performing inphase/quadrature demodulation of the phase-modulated optical signal to provide an optical demodulated signal using deinterleaved signals provided by an array of optical switches; converting the optical demodulated signal to an electronic signal; and tracking and holding the electronic signal for reception by an electronic quantizer. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A photonic processor, comprising:
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a phase modulator configured to receive an electronic radio frequency signal and an optical clock signal and to provide a phase-modulated optical signal; an array of signal optical switches for receiving the phase modulated optical pulse signal and proving a set of time deinterleaved sampled phase modulated optical pulse signals; a set of demodulators each configured to receive a respective time deinterleaved sampled phase modulated optical pulse signal of the time deinterleaved sampled phase modulated optical pulse signals from respective signal optical switches, and to perform demodulation the phase-modulated optical signal in response to an optical clock signal received on a reference path, wherein the demodulators provide respective optical first demodulated signals and respective optical second demodulated signals; and a set of first and second photodetectors configured to receive respectively the optical first demodulated signal and the optical second demodulated signal and to provide an electronic first demodulated signal and an electronic second demodulated signal; and a set of track and hold amplifiers configured to receive respective electronic first demodulated signals and respective second demodulated signals. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A method of processing an analog signal, the method comprising:
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providing at least a first optical signal and an optical reference signal; optically sampling the analog signal with the first optical signal using a phase modulator to produce a sampled optical signal; receiving the sampled optical signal at one of a plurality of optical signal switches to time deinterleave the sampled optical signal into a first time deinterleaved optically sampled signal and a second time deinterleaved optically sampled signal; receiving the optical reference signal at one of a plurality of optical reference switches to time deinterleave the optical reference signal into a first time deinterleaved optical reference signal and a second time deinterleaved optical reference signal; and receiving at least one of the first time deinterleaved optically sampled signal and the second time deinterleaved optically sampled signal and at least one of the first time deinterleaved optical reference signal and the second time deinterleaved optical reference signal at a one of a plurality of signal processors, the signal processors performing optical demodulation.
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Specification