The Experts below are selected from a list of 2031 Experts worldwide ranked by ideXlab platform
Dan M. Marom - One of the best experts on this subject based on the ideXlab platform.
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tunable wdm Sampling Pulse streams using a spatial phase modulator in a biased Pulse shaper
Optics Letters, 2014Co-Authors: David Sinefeld, Dror Shayovitz, Ori Golani, Dan M. MaromAbstract:We generate transform-limited WDM optical Sampling Pulse bursts by filtering ultrashort Pulses from a mode-locked laser. A phase spatial light modulator (SLM) is used in a biased Pulse shaper to circumvent the need to modulate with 2π phase wraps, which are known to limit the phase response. The arrangement compresses and retimes user-selectable bandwidths from the optical short Pulse source with precise control of Pulse bandwidth, Pulse stream rates, and duty cycle.
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Adaptive rate and bandwidth WDM optical Sampling Pulse streams with LCoS-based photonic spectral processor
2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC NFOEC), 2013Co-Authors: David Sinefeld, Dror Shayovitz, Ori Golani, Dan M. MaromAbstract:We generate transform-limited WDM optical Sampling Pulse streams, as an alternative to time-stretched optical Sampling in photonically-assisted analog-to-digital conversion applications. A single LCoS processor compresses and retimes user-selectable bandwidths from an optical short Pulse source.
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Adaptive rate and bandwidth WDM optical Sampling Pulse streams with an LCoS-based biased Pulse shaper
2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel, 2012Co-Authors: David Sinefeld, Dror Shayovitz, Ori Golani, Yiska Fattoi, Dan M. MaromAbstract:We generate transform-limited WDM optical Sampling Pulse streams, as an alternative to time-stretched optical Sampling in photonically-assisted analog-to-digital conversion applications. A single LCoS processor used as a biased Pulse shaper arrangement compresses and retimes user-selectable bandwidths from an optical short Pulse source.
I. Kang - One of the best experts on this subject based on the ideXlab platform.
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High-sensitivity high-resolution linear Sampling up to 640 Gb/s using 90/spl deg/-waveguide optical hybrid
Conference on Lasers and Electro-Optics 2004. (CLEO)., 2004Co-Authors: C. Dorrer, C.r. Doerr, I. KangAbstract:A practical and sensitive Sampling setup based on linear interference of the waveform under test with a Sampling Pulse combined with a waveguide optical hybrid demonstrates quasi-distortion-free Sampling of eye diagrams up to 640 Gb/s.
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High-sensitivity high-resolution Sampling using linear optics and waveguide optical hybrid
Optical Fiber Communication Conference 2004. OFC 2004, 2004Co-Authors: C. Dorrer, C.r. Doerr, I. Kang, P.j. WinzerAbstract:A practical Sampling setup based on linear interference of an optical signal with a Sampling Pulse in a waveguide optical hybrid demonstrates record-sensitivity Sampling of eye diagrams up to 640 Gb/s with high fidelity.
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simple setup for simultaneous optical clock recovery and ultra short Sampling Pulse generation
Electronics Letters, 2002Co-Authors: I. KangAbstract:An optical Sampling source based on simultaneous clock recovery and optical Pulse generation with an electroabsorption modulator is demonstrated. Ultra-short (<670 fs) optical Pulses are generated with 280 fs jitter with respect to a 10 Gbit/s data stream. The source is wavelength tunable and could be extended to handle up to 160 Gbit/s data.
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Simple setup for simultaneous optical clock recovery and ultra-short Sampling Pulse generation
Electronics Letters, 2002Co-Authors: I. KangAbstract:An optical Sampling source based on simultaneous clock recovery and optical Pulse generation with an electroabsorption modulator is demonstrated. Ultra-short (
Liejia Qian - One of the best experts on this subject based on the ideXlab platform.
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single shot cross correlator using a long wavelength Sampling Pulse
Optics Letters, 2011Co-Authors: Peng Yuan, Yongzhi Wang, Dongfang Zhang, Liejia QianAbstract:We present a single-shot cross-correlating scheme capable of high dynamic range and large temporal window for Pulse contrast characterization. By adopting a long-wavelength Sampling Pulse parametrically converted from the Pulse under test, wavelength combination in the correlating process allows the use of a large noncollinear phase-matching angle in periodically poled lithium niobate crystal, matches the high-sensitivity detection system consisting of a fiber array and a photomultiplier tube, and favors the elimination of optical scattering noise. The prototype experiments demonstrate a detectable contrast maximum up to ∼109, temporal window of ∼50 ps, and resolution of ∼1 ps, using <0.5 mJ input energy.
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Single-shot cross-correlator using a long-wavelength Sampling Pulse
Optics Letters, 2011Co-Authors: Jingui Ma, Peng Yuan, Yongzhi Wang, Dongfang Zhang, Liejia QianAbstract:We present a single-shot cross-correlating scheme capable of high dynamic range and large temporal window for Pulse contrast characterization. By adopting a long-wavelength Sampling Pulse parametrically converted from the Pulse under test, wavelength combination in the correlating process allows the use of a large noncollinear phase-matching angle in periodically poled lithium niobate crystal, matches the high-sensitivity detection system consisting of a fiber array and a photomultiplier tube, and favors the elimination of optical scattering noise. The prototype experiments demonstrate a detectable contrast maximum up to ∼109, temporal window of ∼50 ps, and resolution of ∼1 ps, using
Jian Wu - One of the best experts on this subject based on the ideXlab platform.
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Demutiplexing of Nyquist-OTDM Signal Based on Temporal Magnification Aided Optical Sampling With Enhanced Performance
IEEE Photonics Journal, 2019Co-Authors: Deming Kong, Yan Li, Jian WuAbstract:Demultiplexing of high-speed Nyquist optical time-division multiplexed (N-OTDM) signal requires ultra-narrow local Sampling Pulse to avoid the severe inter-symbol-interference (ISI) between each tributary. Unfortunately, generation of such narrow Sampling Pulse is difficult or usually need complex setup configure at the receiver side, which would cause ineffective cost in application scenarios such as short-reach optical communication or PON applications. In this paper, we propose and demonstrate demultiplexing of N-OTDM signal based on temporal magnification followed by coherent optical Sampling to enable broader Sampling Pulsewidths while reducing the ISI. The target tributary of the N-OTDM signal is temporally magnified and further demultiplexed through coherent optical Sampling using Gaussian-shaped or Nyquist-shaped Pulses. With the aid of temporal magnification based on a time-lens, the Sampling window can be extended during the coherent detection progress at the receiver side. Gaussian Sampling Pulses with a Pulsewidth up to 10.4 ps are enabled for the demultiplexing of a 160 Gbaud N-OTDM signal. Compared with demultiplexing based on Nyquist Pulses (i.e., coherent matched Sampling) without temporal magnification, the proposed scheme features a better performance with Pulsewidths greater than 6 ps. If temporal magnification is combined with coherent matched Sampling, Nyquist Sampling Pulses with a Pulsewidth up to 12.4 ps are made possible for the demultiplexing. Therefore, the proposed scheme based on temporal magnification could significantly release the Pulsewidth requirement for N-OTDM demultiplexing while mitigating the ISI.
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Demultiplexing performance investigation of N-OTDM signal by temporal magnification and coherent optical Sampling
2016 IEEE Photonics Conference (IPC), 2016Co-Authors: X. B. Hong, Deming Kong, Yang Li, Jian WuAbstract:Temporal magnification followed by coherent optical Sampling is proposed to enable demultiplexing of 160 Gbaud N-OTDM signal with Sampling Pulses up to 10.4 ps. Compared with coherent matched Sampling, the proposed scheme features better performance with Sampling Pulse width greater than 6 ps.
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Investigation on Pulse-width and Roll-off Factor of Sampling Pulses in Coherent Matched Sampling of a Nyquist Optical Time-division Multiplexed Signal
Asia Communications and Photonics Conference 2015, 2015Co-Authors: Deming Kong, Yan Li, Jizhao Zang, Jian WuAbstract:Coherent detection of N-OTDM signal utilizing Nyquist-shaped Pulses is investigated. Optimum Sampling Pulse-width is found to be independent with receiver bandwidth smaller than baserate. And smaller roll-off factors have slightly advantage over large roll-off factors.
H. Yokoyama - One of the best experts on this subject based on the ideXlab platform.
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Optical Sampling measurement with all-optical clock recovery using mode-locked diode lasers
OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171), 2001Co-Authors: M. Shirane, Y. Hashimoto, H. Yamada, H. Kurita, H. YokoyamaAbstract:Optical Sampling measurement of 160-Gbps signals incorporating all-optical clock recovery has been demonstrated. External-cavity mode-locked semiconductor laser modules, which directly generate coherent 2-ps optical Pulses, were used for optical clock recovery and as an optical Sampling Pulse source. We accomplished the real-time observation of waveform distortion in 160-Gbps optical data signals due to nonlinear optical effect in the transmission fiber.
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A compact optical Sampling measurement system using mode-locked laser-diode modules
IEEE Photonics Technology Letters, 2000Co-Authors: M. Shirane, Y. Hashimoto, H. Yamada, H. YokoyamaAbstract:A compact optical Sampling measurement system with a temporal resolution of 2 ps has been developed. External-cavity mode-locked laser-diode modules, which directly generate coherent 2-ps optical Pulses, were used as the optical Sampling Pulse sources. Real-time measurement of the recovery dynamics in semiconductor saturable absorber devices and 160-Gbit/s pseudorandom return-to-zero optical signals with this system has been demonstrated.
