The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform
Minyu Yao - One of the best experts on this subject based on the ideXlab platform.
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Adaptive thresholding scheme in photonic Analog-To-Digital Conversion.
Optics letters, 2009Co-Authors: Yue Peng, Hongming Zhang, Minyu YaoAbstract:An adaptive thresholding scheme in photonic Analog-To-Digital Conversion is proposed and experimentally demonstrated. Instead of a single-ended electronic comparator, differential detection technology is used to reduce the quantization noise induced by thresholding error. The main advantages of this scheme are the elimination of the dynamic setting of thresholding level and better tolerance to common-mode noise.
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40GS/s Optical Analog-To-Digital Conversion system and its improvement.
Optics express, 2009Co-Authors: Hongming Zhang, Yue Peng, Minyu YaoAbstract:An optical Analog-To-Digital Conversion system is proposed and demonstrated. Using time- and wavelength- interleaved optical sampling pulse train; sampling rate of 40GS/s is realized. 2.5GHz sinusoidal electrical analog signal is sampled and quantized using this system, achieving an effective number of bits of 3.45 bits. A novel technology that can dramatically improve the bandwidth of this system will also be presented in this paper, which manifests that our system can realized high bandwidth of more than 50GHz using commercially available LiNbO3 phase modulator.
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Phase-shifted photonic Analog-To-Digital Conversion system with 40GS/s sampling rate
2009 IEEE LEOS Annual Meeting Conference Proceedings, 2009Co-Authors: Yue Peng, Hongming Zhang, Minyu YaoAbstract:A phase-shifted photonic Analog-To-Digital Conversion system is experimentally demonstrated with 40GS/S sampling rate. A 2.5GHz sinusoid signal is quantized and the effective number of bits of 3.41 is obtained.
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A new proposal of photonic Analog-To-Digital Conversion based on polarization modulator and polarizer
2009 15th Asia-Pacific Conference on Communications, 2009Co-Authors: Hongming Zhang, Minyu YaoAbstract:In this paper, a novel photonic Analog-To-Digital Conversion method is proposed, theoretically analyzed and numerically simulated. This method features simple configuration, because only one polarization modulator, several polarization controllers and several polarizers are required. Furthermore, this method mitigated the problem of bias-drift, which is common in some previous intensity modulating schemes.
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Photonic Analog-To-Digital Conversion using LiNbO3 Asymmetric Mach-Zehnder Interferometer
Optical Transmission Switching and Subsystems VI, 2008Co-Authors: Hongming Zhang, Minyu YaoAbstract:Asymmetric lithium niobate Mach-Zehnder interferometer and its applications in photonic Analog-To-Digital Conversion will be discussed. Two schemes based on the asymmetric interferometer will be proposed and analyzed. The first scheme is the phase shift photonic Analog-To-Digital Conversion using asymmetric interferometer and synchronized multiwavelength optical sampling pulses. Because of the dispersion effect of the lithium niobate crystal, when multiwavelength optical pulses enter into the interferometer, at the output port, different wavelengths will have different phase differences between two arms. As a result, after interference, the transmission characteristics of different wavelengths will have a phase shift between each other, and this is just the key issue of phase shift photonic Analog-To-Digital Conversion. The other scheme we will propose in this paper is a spectral encoded photonic Analog-To-Digital Conversion. The spectral transmission characteristic of the asymmetric interferometer will shift with the voltage change of the analog signal, and this shift has an ideal linear relation with the analog voltage change. The peak wavelength of the transmission spectrum can be detected to realize quantization of the applied analog signal. Using both schemes presented in this paper, high sampling rate and high resolution optical Analog-To-Digital Conversion can be realized.
Akihiro Maruta - One of the best experts on this subject based on the ideXlab platform.
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Photonic Analog-To-Digital Conversion Using Electro-Absorption Modulator and Supercontinuum Light
2006 European Conference on Optical Communications, 2006Co-Authors: Shoichiro Oda, Akihiro MarutaAbstract:We propose a novel photonic Analog-To-Digital Conversion scheme using electro-absorption modulator and supercontinuum light. In this paper, a 2-bit photonic Analog-To-Digital Conversion is experimentally demonstrated using an arrayed waveguide grating.
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a novel quantization scheme by slicing supercontinuum spectrum for all optical analog to digital Conversion
IEEE Photonics Technology Letters, 2005Co-Authors: Shoichiro Oda, Akihiro MarutaAbstract:We describe the principle of a novel quantization scheme for all-optical Analog-To-Digital Conversion. The proposed quantization is realized by slicing the supercontinuum spectrum with an arrayed waveguide grating. We conducted a proof-of-principle experiment of an optical three-level thresholding process and successfully demonstrated a two-bit optical quantizer, which shows the feasibility of the proposed scheme.
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All-optical Analog-To-Digital Conversion based on 2nd-order soliton splitting in fiber
Nonlinear Guided Waves and Their Applications, 2005Co-Authors: Shoichiro Oda, Akihiro MarutaAbstract:In this paper, we propose a novel polarization-independent all-optical Analog-To-Digital Conversion scheme, which is realized by filtering the spectrum of the 2nd-order soliton. We experimentally demonstrate the proposed 2-bit all-optical ADC.
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A novel quantization scheme by slicing supercontinuum spectrum for all-optical Analog-To-Digital Conversion
Nonlinear Guided Waves and Their Applications, 2004Co-Authors: Shoichiro Oda, Shu-ichi Okamoto, Akihiro MarutaAbstract:We propose a novel quantization scheme for all-optical Analog-To-Digital Conversion. The quantization is achieved by slicing the supercontinuum spectrum in which broadened spectral width depends on the peak power of the input pulse.
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All-optical Analog-To-Digital Conversion utilizing nonlinear phenomena in fiber
The 15th Annual Meeting of the IEEE Lasers and Electro-Optics Society, 1Co-Authors: Akihiro Maruta, Shoichiro Oda, Yoshihisa Yamamoto, Ken-ichi KitayamaAbstract:A novel all-optical Analog-To-Digital Conversion scheme including both sampling and quantizing is proposed. It is based on nonlinear phenomena in optical fiber, i.e. four-wave mixing is used for sampling and soliton phenomena for quantizing. An experiment on separating higher order solitons is conducted.
Hongming Zhang - One of the best experts on this subject based on the ideXlab platform.
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Optical Analog-To-Digital Conversion System Based on Compressive Sampling
IEEE Photonics Technology Letters, 2011Co-Authors: Hao Nan, Hongming ZhangAbstract:A novel scheme of optical Analog-To-Digital Conversion system is proposed based on compressive sampling and the recent electrical modulated wideband converter. The proposed optical solution is more stable and implementable in practice. Because of the ultranarrow optical pulseswidth, the proposed solution can provide a uniform signal-to-noise attenuate of all frequency bins, compared to its electrical counterpart.
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Adaptive thresholding scheme in photonic Analog-To-Digital Conversion.
Optics letters, 2009Co-Authors: Yue Peng, Hongming Zhang, Minyu YaoAbstract:An adaptive thresholding scheme in photonic Analog-To-Digital Conversion is proposed and experimentally demonstrated. Instead of a single-ended electronic comparator, differential detection technology is used to reduce the quantization noise induced by thresholding error. The main advantages of this scheme are the elimination of the dynamic setting of thresholding level and better tolerance to common-mode noise.
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40GS/s Optical Analog-To-Digital Conversion system and its improvement.
Optics express, 2009Co-Authors: Hongming Zhang, Yue Peng, Minyu YaoAbstract:An optical Analog-To-Digital Conversion system is proposed and demonstrated. Using time- and wavelength- interleaved optical sampling pulse train; sampling rate of 40GS/s is realized. 2.5GHz sinusoidal electrical analog signal is sampled and quantized using this system, achieving an effective number of bits of 3.45 bits. A novel technology that can dramatically improve the bandwidth of this system will also be presented in this paper, which manifests that our system can realized high bandwidth of more than 50GHz using commercially available LiNbO3 phase modulator.
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Phase-shifted photonic Analog-To-Digital Conversion system with 40GS/s sampling rate
2009 IEEE LEOS Annual Meeting Conference Proceedings, 2009Co-Authors: Yue Peng, Hongming Zhang, Minyu YaoAbstract:A phase-shifted photonic Analog-To-Digital Conversion system is experimentally demonstrated with 40GS/S sampling rate. A 2.5GHz sinusoid signal is quantized and the effective number of bits of 3.41 is obtained.
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A new proposal of photonic Analog-To-Digital Conversion based on polarization modulator and polarizer
2009 15th Asia-Pacific Conference on Communications, 2009Co-Authors: Hongming Zhang, Minyu YaoAbstract:In this paper, a novel photonic Analog-To-Digital Conversion method is proposed, theoretically analyzed and numerically simulated. This method features simple configuration, because only one polarization modulator, several polarization controllers and several polarizers are required. Furthermore, this method mitigated the problem of bias-drift, which is common in some previous intensity modulating schemes.
Shoichiro Oda - One of the best experts on this subject based on the ideXlab platform.
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Photonic Analog-To-Digital Conversion Using Electro-Absorption Modulator and Supercontinuum Light
2006 European Conference on Optical Communications, 2006Co-Authors: Shoichiro Oda, Akihiro MarutaAbstract:We propose a novel photonic Analog-To-Digital Conversion scheme using electro-absorption modulator and supercontinuum light. In this paper, a 2-bit photonic Analog-To-Digital Conversion is experimentally demonstrated using an arrayed waveguide grating.
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a novel quantization scheme by slicing supercontinuum spectrum for all optical analog to digital Conversion
IEEE Photonics Technology Letters, 2005Co-Authors: Shoichiro Oda, Akihiro MarutaAbstract:We describe the principle of a novel quantization scheme for all-optical Analog-To-Digital Conversion. The proposed quantization is realized by slicing the supercontinuum spectrum with an arrayed waveguide grating. We conducted a proof-of-principle experiment of an optical three-level thresholding process and successfully demonstrated a two-bit optical quantizer, which shows the feasibility of the proposed scheme.
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All-optical Analog-To-Digital Conversion based on 2nd-order soliton splitting in fiber
Nonlinear Guided Waves and Their Applications, 2005Co-Authors: Shoichiro Oda, Akihiro MarutaAbstract:In this paper, we propose a novel polarization-independent all-optical Analog-To-Digital Conversion scheme, which is realized by filtering the spectrum of the 2nd-order soliton. We experimentally demonstrate the proposed 2-bit all-optical ADC.
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A novel quantization scheme by slicing supercontinuum spectrum for all-optical Analog-To-Digital Conversion
Nonlinear Guided Waves and Their Applications, 2004Co-Authors: Shoichiro Oda, Shu-ichi Okamoto, Akihiro MarutaAbstract:We propose a novel quantization scheme for all-optical Analog-To-Digital Conversion. The quantization is achieved by slicing the supercontinuum spectrum in which broadened spectral width depends on the peak power of the input pulse.
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All-optical Analog-To-Digital Conversion utilizing nonlinear phenomena in fiber
The 15th Annual Meeting of the IEEE Lasers and Electro-Optics Society, 1Co-Authors: Akihiro Maruta, Shoichiro Oda, Yoshihisa Yamamoto, Ken-ichi KitayamaAbstract:A novel all-optical Analog-To-Digital Conversion scheme including both sampling and quantizing is proposed. It is based on nonlinear phenomena in optical fiber, i.e. four-wave mixing is used for sampling and soliton phenomena for quantizing. An experiment on separating higher order solitons is conducted.
Georg Wilckens - One of the best experts on this subject based on the ideXlab platform.
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control bounded analog to digital Conversion transfer function analysis proof of concept and digital filter implementation
arXiv: Signal Processing, 2020Co-Authors: Hans-andrea Loeliger, Hampus Malmberg, Georg WilckensAbstract:Control-bounded Analog-To-Digital Conversion has many commonalities with delta-sigma Conversion, but it can profitably use more general analog filters. The paper describes the operating principle, gives a transfer function analysis, presents a proof-of-concept implementation, and describes the digital filtering in detail.
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ITA - Control-based Analog-To-Digital Conversion without sampling and quantization
2015 Information Theory and Applications Workshop (ITA), 2015Co-Authors: Hans-andrea Loeliger, Georg WilckensAbstract:A new approach to Analog-To-Digital Conversion is proposed. The analog part of such a converter is a continuous-time linear system/filter that is subject to digital control; the digital part infers the signal based only on the digital control. An exact transfer-function analysis is possible.
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ITA - Analog-To-Digital Conversion using unstable filters
2011 Information Theory and Applications Workshop, 2011Co-Authors: Hans-andrea Loeliger, Lukas Bolliger, Georg Wilckens, Jonas BiveroniAbstract:A new approach to Analog-To-Digital Conversion is proposed which combines unstable analog filters with digital Kalman filtering. The proposed approach subsumes sigma-delta converters, on which it offers a new perspective.