An optical analog-to-digital converter - Design and analysis

Taylor, Henry F.

doi:10.1109/jqe.1979.1069987

Cited by 197 publications

(64 citation statements)

References 17 publications

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“…As a result, various optical ADC schemes have been proposed and demonstrated in the past three decades, 1,2 including photonic-assisted ADC [3][4][5] and photonic sampled and/or quantized ADC. [6][7][8][9][10][11][12] Most recently, a phase-modulating scheme of all-optical ADC, known as phase-shifted optical quantization ͑PSOQ͒, has been presented, [9][10][11] in which a phase modulator is used, along with an optical phase-shifter module ͑OPSM͒. The OPSM is used to introduce a fixed phase shift between the sinusoidal transmission curves of all channels, and the N-channel optical outputs of the whole system are thresholded to yield quantized codes.…”

Section: Introductionmentioning

confidence: 99%

Noninterferometric optical phase-shifter module in phase-shifted optical quantization

Zhang

et al. 2009

Opt. Eng

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A noninterferometric configuration for an optical phase-shifter module ͑OPSM͒ is presented and demonstrated, which is a key component in phase-shifted optical quantization ͑PSOQ͒ systems. In a PSOQ system employing such an OPSM, the input electrical analog signal is applied on two LiNbO 3 intensity modulators in parallel, and the OPSM takes the outputs of the intensity modulators as its input and yields N-channel optical outputs, which are thresholded to generate digitized values of the input analog signal. The feasibility of this OPSM configuration is demonstrated by a proof-of-principle PSOQ experiment, in which a 2.5-GHz single tone is applied to the modulators and 16 transmission curves are recorded. Based on these transmission curves, software sampling indicates that an effective number of bits equal to 4.17 is attainable for a frequency as high as 2.5 GHz. Benefits of such an OPSM are easier control and high precision of desired phase shifts. © 2009 Society of Photo-Optical Instrumentation Engineers.

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Section: Introductionmentioning

confidence: 99%

Noninterferometric optical phase-shifter module in phase-shifted optical quantization

Zhang

et al. 2009

Opt. Eng

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“…Electronic warfare, communications, digital radio, and electronic instrumentation are but a few of the applications where a high-speed, high-resolution ADC would greatly enhance the system performance. The realization of such an ADC has proven itself a difficult task, and the potential for using optical processing as a means to achieve high-speed conversion has long intrigued system designers [1,2]. Although there has been significant progress with high-speed electronic ADC systems, the ability to achieve conversion rates (at least 10…”

Section: Introductionmentioning

confidence: 99%

Optically Assisted High-Speed, High Resolution Analog-to-Digital Conversion

Zmuda¹

2005

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“…Mode-locked lasers with repetition rates in the 10-100 GHz range are of significant interest for applications including optical sampling, 1 arbitrary waveform generation, 2 and nonlinear applications such as large-mode-spacing supercontinuum generation. 3 To date, high repetition rate sources have tended to be either harmonically mode-locked fiber lasers, which have reached repetition rates up to 200 GHz, 4 or harmonically mode-locked semiconductor diode lasers, with repetition rates in the terahertz range.…”

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confidence: 99%

Passively harmonically mode-locked vertical-external-cavity surface-emitting laser emitting 1.1 ps pulses at 147 GHz repetition rate

Quarterman¹,

Perevedentsev²,

Wilcox³

et al. 2010

Applied Physics Letters

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Coupled-cavity passive harmonic mode-locking of a quantum well based vertical-external-cavity surface-emitting laser has been demonstrated, yielding an output pulse train of 1.5 ps pulses at a repetition rate of 80 GHz and with an average power of 80 mW. Harmonic mode-locking results from coupling between the main laser cavity and a cavity formed within the substrate of the saturable absorber structure. Mode-locking on the second harmonic of the substrate cavity allows a train of 1.1 ps pulses to be generated at a repetition rate of 147 GHz with 40 mW average power.

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An optical analog-to-digital converter - Design and analysis

Cited by 197 publications

References 17 publications

Noninterferometric optical phase-shifter module in phase-shifted optical quantization

Noninterferometric optical phase-shifter module in phase-shifted optical quantization

Optically Assisted High-Speed, High Resolution Analog-to-Digital Conversion

Passively harmonically mode-locked vertical-external-cavity surface-emitting laser emitting 1.1 ps pulses at 147 GHz repetition rate

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