Optically clocked track-and-hold for high-speed high-resolution analog-to-digital conversion

Jacobs, E. W.; Sobti, J.B.; Vella, V.F.; Nguyen, Ray; Albares, D. J.; Olsen, Randall; Chang, C.T.; Sun, Sanshan; Choe, Minhyeok; Beccue, S.; Yu, R.; Wagt, J.P.A. van der

doi:10.1109/mwp.2004.1396871

Cited by 9 publications

(8 citation statements)

References 5 publications

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“…In order to overcome the limitations of the electronics ADCs and the T&H, different photonic structures have been analyzed [3][4][5]. These are briefly presented here.…”

Section: Overview Of Photonic-adc Architecturesmentioning

confidence: 99%

High speed, high frequency electro-photonic ADC for space enabled routers and flexible antennas

Piqueras¹,

Villalba²,

Polo³

et al. 2017

International Conference on Space Optics — ICSO 2016

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“…In order to overcome the limitations of the electronics ADCs and the T&H, different photonic structures have been analyzed [3][4][5]. These are briefly presented here.…”

Section: Overview Of Photonic-adc Architecturesmentioning

confidence: 99%

High speed, high frequency electro-photonic ADC for space enabled routers and flexible antennas

Piqueras¹,

Villalba²,

Polo³

et al. 2017

International Conference on Space Optics — ICSO 2016

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“…More recently, there have been several advances in optically clocked track and hold circuits. One group [29][30][31][32] (Sun et al1991and Jacobs et al 2004 recognized the limitations of direct illumination of a single optoelectronic switch for track and hold: (1) in the on state, the hold capacitor is charged by the weak input signal and (2) the turn-off time depends on semiconductor lifetimes, which are generally not sufficiently short for high frequency applications. They demonstrated the use of an optically clocked diode-bridge circuit, as shown in Fig.…”

Section: Optically Clocked Track-and-hold Circuitsmentioning

confidence: 99%

“…They demonstrated the use of an optically clocked diode-bridge circuit, as shown in Fig. 8, to overcome these limitations [32]. The diode bridge circuit is biased in track mode.…”

Section: Optically Clocked Track-and-hold Circuitsmentioning

confidence: 99%

“…The major advantages of the optical clock circuit are reduced aperture time, which decreases the nonlinear response of the bridge; high clock isolation, which practically eliminates clock/signal interference; and low clock jitter, which is 1-2 orders of magnitude smaller in mode-locked lasers compared to the best electronics. For an input frequency of 1.0073 GHz and a sampling rate of 1.003 GS/s, Jacobs et al [32] used downconversion to demonstrate that the track and circuitry maintained 11.8 SFDR bits and 9.6 SNR bits. Another approach, developed by workers at Stanford University [33][34][35][36][37] (Urata et al, 2001, 2003a, 2003b, Ma et al 2004 uses GaAs photoconductive switches integrated with CMOS ADCs to form a time-interleaved ADC.…”

Section: Optically Clocked Track-and-hold Circuitsmentioning

confidence: 99%

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Photonic Analog-to-Digital Converters A Tutorial

Valley

2009

Optical Fiber Communication Conference and National Fiber Optic Engineers Conference

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This paper reviews over 30 years of work on photonic analog-todigital converters. The review is limited to systems in which the input is a radio-frequency (RF) signal in the electronic domain and the output is a digital version of that signal also in the electronic domain, and thus the review excludes photonic systems directed towards digitizing images or optical communication signals. The state of the art in electronic ADCs, basic properties of ADCs and properties of analog optical links, which are found in many photonic ADCs, are reviewed as background information for understanding photonic ADCs. Then four classes of photonic ADCs are reviewed: 1) photonic assisted ADC in which a photonic device is added to an electronic ADC to improve performance, 2) photonic sampling and electronic quantizing ADC, 3) electronic sampling and photonic quantizing ADC, and 4) photonic sampling and quantizing ADC. It is noted, however, that all 4 classes of "photonic ADC" require some electronic sampling and quantization. After reviewing all known photonic ADCs in the four classes, the review concludes with a discussion of the potential for photonic ADCs in the future.

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“…In this work we present a study of different laser cavities and modelocking techniques intended to obtain a pulsed optical source with the optimum properties required to be implemented in a photonics-assisted analog to digital converter (PADC), where the source will act as optical clock of the sampling process [5]. High-speed high-resolution PADCs require pulsed signals of repetition rates of tens of GHz, pulse durations of hundreds of fs and time jitters of tens of fs [6], which have been the aimed properties of the lasers developed in this work. This objective has been approached by designing, simulating, fabricating and characterizing active and passive modelocking fiber sources with different cavity structures.…”

Section: Introductionmentioning

confidence: 99%

Active and Passive Mode-Locked Fiber Lasers for High-Speed High-Resolution Photonic Analog-to-Digital Conversion

Villanueva¹,

Ferri²,

Pérez-Millán

2012

IEEE J. Quantum Electron.

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We present a complete set of mode-locked fiber lasers designed for photonic analog-to-digital conversion. Design, simulation, fabrication, and characterization of Er-doped fiber lasers are carried out through optimizing their performance to suit the requirements of high-speed and high-resolution photonicassisted analog-to-digital converters. The required properties are achieved by active mode-locking on the basis of amplitude modulation of the cavity losses through a Mach-Zehnder modulator, and passive mode-locking on the basis of fast semiconductor saturable absorbers and intracavity polarizing fibers. The use of an intracavity polarizing fiber in combination with a fast saturable absorber allows dynamic control of the operation regimes through polarization control. Besides these oscillators designed with ring cavity structure, a short linear cavity with fundamental repetition frequency at the order of 1 GHz is studied, and an effective continuous tunability of the repetition frequency is obtained by an electromechanical transducer. Pulsed repetition rates up to 20 GHz, pulsewidths down to 500 fs, and time jitters below 180 fs are obtained. Fiber lasers based on standard and commercially available telecom devices are demonstrated to be a low-cost, compact, and versatile optical source for photonic-assisted analog-to-digital conversion.

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Optically clocked track-and-hold for high-speed high-resolution analog-to-digital conversion

Abstract: An optically clocked track-and-hold (TH) circuit for improved TH linearity and noise performance is presented. Results with fi.=1.0073 GHz and sample rate f,=1.003 GWs show 11.8 SFDR bits and 9.6 SNR bits.

Cited by 9 publications

References 5 publications

High speed, high frequency electro-photonic ADC for space enabled routers and flexible antennas

High speed, high frequency electro-photonic ADC for space enabled routers and flexible antennas

Photonic Analog-to-Digital Converters A Tutorial

Active and Passive Mode-Locked Fiber Lasers for High-Speed High-Resolution Photonic Analog-to-Digital Conversion

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