&lt;title&gt;Optical sampling and demultiplexing applied to A/D conversion&lt;/title&gt;

Bell, Julia A.; Hamilton, Michael C.; Leep, David A.

doi:10.1117/12.50785

Cited by 24 publications

(11 citation statements)

References 3 publications

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“…The concepts of optical sampling and time interleaving were first combined by Bell et al to realize a 2-GS/s hybrid optical/electronic ADC that achieved a resolution of 2.8 effective bits (18.5-dB SNR) when undersampling a 10.3-GHz sinusoid [17], [18]. In this ADC, the optical pulse source was a laser diode that was gain switched using a 2-GHz step-recovery diode.…”

Section: Survey Of Optically Sampled Adcsmentioning

confidence: 99%

Optically sampled analog-to-digital converters

Juodawlkis

Twichell

Betts

et al. 2001

IEEE Trans. Microwave Theory Techn.

294

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Optically sampled analog-to-digital converters (ADCs) combine optical sampling with electronic quantization to enhance the performance of electronic ADCs. In this paper, we review the prior and current work in this field, and then describe our efforts to develop and extend the bandwidth of a linearized sampling technique referred to as phase-encoded optical sampling. The technique uses a dual-output electrooptic sampling transducer to achieve both high linearity and 60-dB suppression of laser amplitude noise. The bandwidth of the technique is extended by optically distributing the post-sampling pulses to an array of time-interleaved electronic quantizers. We report on the performance of a 505-MS/s (megasample per second) optically sampled ADC that includes high-extinction LiNbO 3 1-to-8 optical time-division demultiplexers. Initial characterization of the 505-MS/s system reveals a maximum signal-to-noise ratio of 51 dB (8.2 bits) and a spur-free dynamic range of 61 dB. The performance of the present system is limited by electronic quantizer noise, photodiode saturation, and preliminary calibration procedures. None of these fundamentally limit this sampling approach, which should enable multigigahertz converters with 12-b resolution. A signal-to-noise analysis of the phase-encoded sampling technique shows good agreement with measured data from the 505-MS/s system.

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Section: Survey Of Optically Sampled Adcsmentioning

confidence: 99%

Optically sampled analog-to-digital converters

Juodawlkis

Twichell

Betts

et al. 2001

IEEE Trans. Microwave Theory Techn.

294

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“…O PTICAL sampling for higher sampling rates and fidelity is increasingly seen as a solution for advancing digital signal processing, which is presently severely limited by the speed and resolution of electronic analog-to-digital converters (ADCs) [1]- [3]. Sampling speeds on the order of tens-of-gigahertz, even with limited resolution, would enable functionality currently unaccessible through any other means [4].…”

Section: Motivationmentioning

confidence: 99%

Precision Broadband RF Signal Recovery in Subsampled Analog Optical Links

Harmon

McKinney

2015

IEEE Photon. Technol. Lett.

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We present a novel technique for ultrawideband RF disambiguation where we are able to determine the precise Nyquist band from which an optically sampled, and therefore downconverted signal originated. This is accomplished by applying a discrete perturbation to the sampling rate, and measuring the magnitude and direction of the shift in signal location within the fundamental Nyquist band. Once the Nyquist band has been determined, the exact signal frequency can also be recovered. We demonstrate extremely accurate multioctave signal recovery over 1 MHz-40 GHz.

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“…Unfortunately, the performance of previous photonic ADC schemes has been limited and has not surpassed that of all-electronic ADC's [2], [3]. Recently, we have proposed and initially demonstrated a new highly parallel pulsed opto-electronic ADC (HIPPOE ADC) that combines the high-bandwidth optical front-end with a highly parallel wavelength-multiplexed signal transmission followed by a high-resolution low-cost electronic back-end digitization [4].…”

Section: Introductionmentioning

confidence: 98%

Highly parallel pulsed optoelectronic analog-digital converter

Kang

Frankel²,

Esman³

1998

IEEE Photon. Technol. Lett.

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We characterize the performance of a highly parallel pulsed optoelectronic analog to digital converter. The system is based on a time-domain to wavelength-domain mapping, such that an input analog signal is parallelized using a wavelengthdivision-demultiplexed scheme. Each parallel wavelength channel is then digitized using conventional, slow electronic analog-digital converters. We use narrow-band signals up to 18 GHz and histogram testing to characterize the system. From the measurements, we deduce the effective number of bits of the system to be 6 and 5 bits for 4 and 36 giga-samples-per-second (GSPS) sampling rates, respectively.Index Terms-Analog-digital conversion, optical data processing, wavelgnth-division multiplexing.

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<title>Optical sampling and demultiplexing applied to A/D conversion</title>

Cited by 24 publications

References 3 publications

Optically sampled analog-to-digital converters

Optically sampled analog-to-digital converters

Precision Broadband RF Signal Recovery in Subsampled Analog Optical Links

Highly parallel pulsed optoelectronic analog-digital converter

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