The Experts below are selected from a list of 28167 Experts worldwide ranked by ideXlab platform
Chuanchuan Yang - One of the best experts on this subject based on the ideXlab platform.
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Non-Orthogonal Basis Expansion Based Phase Noise Suppression Method for CO-OFDM System
2018 Asia Communications and Photonics Conference (ACP), 2018Co-Authors: Yue Liu, Chuanchuan Yang, Cheng Zhang, Anzhong Liang, Gao ZhengAbstract:We propose a new non-orthogonal basis expansion based phase Noise Suppression method for CO-OFDM system. The numerical results show that the system performance can be improved greatly compared with the conventional orthogonal basis expansion method.
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eigenvector basis expansion based phase Noise Suppression method for co ofdm systems
IEEE Photonics Technology Letters, 2017Co-Authors: Zhongwei Tan, Chuanchuan YangAbstract:Coherent optical orthogonal frequency division multiplexing (CO-OFDM) system is known vulnerable to the laser phase Noise. In this letter, we propose a novel phase Noise Suppression method based on eigenvector basis expansion (EBE) for CO-OFDM systems. With the help of the proposed method, the induced phase Noise effects can be mitigated efficiently. Numerical results show that compared with the orthogonal basis expansion-based phase Noise Suppression method, by performing an EBE to the phase Noise, a more accurate description of the phase Noise can be achieved, and hence leads to a better system performance. Besides, the additional computational complexity is limited, since the eigenvector basis only depends on the laser linewidth.
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Orthogonal Basis Expansion-Based Phase Noise Suppression for PDM CO-OFDM System
IEEE Photonics Technology Letters, 2014Co-Authors: Xi Fang, Chuanchuan Yang, Tingting Zhang, Fan ZhangAbstract:In this letter, we develop an orthogonal basis expansion (OBE)-based phase Noise Suppression method for polarization-division-multiplexed (PDM) coherent optical orthogonal frequency-division-multiplexing (CO-OFDM) systems. Compared with the conventional phase Noise Suppression approach, the OBE method not only significantly promotes the system tolerance of laser phase Noise, but also improves the system robustness against nonlinear phase Noise. The theoretical analysis is validated by numerical simulations of PDM CO-OFDM systems with 16-quadrature-amplitude-modulation format.
Zhongmin Yang - One of the best experts on this subject based on the ideXlab platform.
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broad bandwidth near shot Noise limited intensity Noise Suppression of a single frequency fiber laser
Optics Letters, 2016Co-Authors: Qilai Zhao, Zhouming Feng, Changsheng Yang, Kaijun Zhou, Mingying Peng, Huaqiu Deng, Zhongmin YangAbstract:A significant broad-bandwidth near-shot-Noise-limited intensity Noise Suppression of a single-frequency fiber laser is demonstrated based on a semiconductor optical amplifier (SOA) with optoelectronic feedback. By exploiting the gain saturation effect of the SOA and the intensity feedback loop, a maximum Noise Suppression of over 50 dB around the relaxation oscillation frequencies and a Suppression bandwidth of up to 50 MHz are obtained. The relative intensity Noise of −150 dB/Hz in the frequency range from 0.8 kHz to 50 MHz is achieved, which approaches the shot-Noise limit. The obtained optical signal-to-Noise ratio is more than 70 dB. This near-shot-Noise-limited laser source shows important implications for the advanced fields of high-precision frequency stabilization, quantum key distribution, and gravitational wave detection.
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all optical frequency and intensity Noise Suppression of single frequency fiber laser
Optics Letters, 2015Co-Authors: Can Li, Shanhui Xu, Zhouming Feng, Changsheng Yang, Kaijun Zhou, Yu Xiao, Xiang Huang, Zhongmin YangAbstract:An all-optical frequency and intensity Noise Suppression technique of a single-frequency fiber laser is demonstrated. By exploiting the recursive Noise reduction effect of a semiconductor optical amplifier (SOA) in a self-injection locked fiber laser, the frequency and intensity Noise of the laser are remarkably suppressed in a significantly wide frequency range. In addition to the linewidth Suppression from 3.5 kHz to 700 Hz, the frequency Noise has been reduced by ∼25 dB. After Suppression, the relative intensity Noise (RIN) is within 5 dB of the shot Noise limit at frequencies from 1.5 to 3 MHz, and the frequency range of the Suppression reaches about 30 MHz. The relaxation oscillation peak is observed to shift to lower frequencies and is reduced by about 35 dB from −90 dB/Hz to −125 dB/Hz. It is believed that the achieved low Noise makes the fiber laser a promising candidate in applications such as ultra-long haul coherent optical communication and LIDAR.
Fan Zhang - One of the best experts on this subject based on the ideXlab platform.
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Orthogonal Basis Expansion-Based Phase Noise Suppression for PDM CO-OFDM System
IEEE Photonics Technology Letters, 2014Co-Authors: Xi Fang, Chuanchuan Yang, Tingting Zhang, Fan ZhangAbstract:In this letter, we develop an orthogonal basis expansion (OBE)-based phase Noise Suppression method for polarization-division-multiplexed (PDM) coherent optical orthogonal frequency-division-multiplexing (CO-OFDM) systems. Compared with the conventional phase Noise Suppression approach, the OBE method not only significantly promotes the system tolerance of laser phase Noise, but also improves the system robustness against nonlinear phase Noise. The theoretical analysis is validated by numerical simulations of PDM CO-OFDM systems with 16-quadrature-amplitude-modulation format.
Zhongwei Tan - One of the best experts on this subject based on the ideXlab platform.
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eigenvector basis expansion based phase Noise Suppression method for co ofdm systems
IEEE Photonics Technology Letters, 2017Co-Authors: Zhongwei Tan, Chuanchuan YangAbstract:Coherent optical orthogonal frequency division multiplexing (CO-OFDM) system is known vulnerable to the laser phase Noise. In this letter, we propose a novel phase Noise Suppression method based on eigenvector basis expansion (EBE) for CO-OFDM systems. With the help of the proposed method, the induced phase Noise effects can be mitigated efficiently. Numerical results show that compared with the orthogonal basis expansion-based phase Noise Suppression method, by performing an EBE to the phase Noise, a more accurate description of the phase Noise can be achieved, and hence leads to a better system performance. Besides, the additional computational complexity is limited, since the eigenvector basis only depends on the laser linewidth.
Xi Fang - One of the best experts on this subject based on the ideXlab platform.
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Orthogonal Basis Expansion-Based Phase Noise Suppression for PDM CO-OFDM System
IEEE Photonics Technology Letters, 2014Co-Authors: Xi Fang, Chuanchuan Yang, Tingting Zhang, Fan ZhangAbstract:In this letter, we develop an orthogonal basis expansion (OBE)-based phase Noise Suppression method for polarization-division-multiplexed (PDM) coherent optical orthogonal frequency-division-multiplexing (CO-OFDM) systems. Compared with the conventional phase Noise Suppression approach, the OBE method not only significantly promotes the system tolerance of laser phase Noise, but also improves the system robustness against nonlinear phase Noise. The theoretical analysis is validated by numerical simulations of PDM CO-OFDM systems with 16-quadrature-amplitude-modulation format.
