We present a novel method for providing broadcast signal transmission in a wavelength division multiplexing passive optical network （WDM-PON）. An unmodulated optical carrier for downstream transmission and a pair of...We present a novel method for providing broadcast signal transmission in a wavelength division multiplexing passive optical network （WDM-PON）. An unmodulated optical carrier for downstream transmission and a pair of unmodulated single-side band subcarriers are utilized for broadcast delivery and upstream transmission, respectively. System performance at 2.5-Gb/s down/upstream and 2.5-Gb/s broadcast transmission is also investigated.展开更多
A novel method for distortion-free optical pulse transmission is theoretically proposed and simulated, in which two time lenses formed by dispersion fibers and quadratic phase modulations are utilized. One is used as ...A novel method for distortion-free optical pulse transmission is theoretically proposed and simulated, in which two time lenses formed by dispersion fibers and quadratic phase modulations are utilized. One is used as an optical inverse Fourier transformation （OIFT） device to transform the initial time-domain data to frequency-domain one at the transmitter and the other as an optical Fourier transformation （OFT） device to recover the data at the receiver. By using the unchanged spectral envelope in linear optical fiber communication, the initial data can be recovered. Through simulations, a 10× 100 Gb/s intensity-modulated direct-detection （IM-DD） dense wavelength division multiplexing （DWDM） system over 20000 km transmission without the compensation for polarization mode dispersion （PMD） and dispersion slope is achieved, which can be used to upgrade the current 100Gb/s IM-DD system to a 100-Gb/s one directly.展开更多
通过测试马可尼S3系列和OMS1664系列传输设备在正确配置和错误配置时MSP1+1保护的倒换过程,分析同步数字体系(synchronous digital hierarchy SDH)传输设备在MSP1+1保护倒换中的倒换机制及倒换过程中的业务传输流向,找出了因一次实施光...通过测试马可尼S3系列和OMS1664系列传输设备在正确配置和错误配置时MSP1+1保护的倒换过程,分析同步数字体系(synchronous digital hierarchy SDH)传输设备在MSP1+1保护倒换中的倒换机制及倒换过程中的业务传输流向,找出了因一次实施光缆业务转移过程中造成A变电站至B变电站光传输中断的真正原因,从而为广东电网电力通信设备的评测工作积累经验。展开更多
基金supported by the Shanghai Leading Academic Discipline Project and Science and Technology Commission of Shanghai Municipality (STCSM) under Grant Nos. S30108 and 08DZ2231100
文摘We present a novel method for providing broadcast signal transmission in a wavelength division multiplexing passive optical network （WDM-PON）. An unmodulated optical carrier for downstream transmission and a pair of unmodulated single-side band subcarriers are utilized for broadcast delivery and upstream transmission, respectively. System performance at 2.5-Gb/s down/upstream and 2.5-Gb/s broadcast transmission is also investigated.
基金supported by the National Natural Science Foundation of China (No. 60772013)the Open Fund of Key Laboratory of Optical Communication and Lightwave Technologies (Beijing University of Posts and Telecommunications),Ministry of Education+1 种基金the National "863" Program of China (No. 2006AA03Z422)the Research Foundation of Huazhong University of Science and Techology (No. 2006M041)
文摘A novel method for distortion-free optical pulse transmission is theoretically proposed and simulated, in which two time lenses formed by dispersion fibers and quadratic phase modulations are utilized. One is used as an optical inverse Fourier transformation （OIFT） device to transform the initial time-domain data to frequency-domain one at the transmitter and the other as an optical Fourier transformation （OFT） device to recover the data at the receiver. By using the unchanged spectral envelope in linear optical fiber communication, the initial data can be recovered. Through simulations, a 10× 100 Gb/s intensity-modulated direct-detection （IM-DD） dense wavelength division multiplexing （DWDM） system over 20000 km transmission without the compensation for polarization mode dispersion （PMD） and dispersion slope is achieved, which can be used to upgrade the current 100Gb/s IM-DD system to a 100-Gb/s one directly.
文摘通过测试马可尼S3系列和OMS1664系列传输设备在正确配置和错误配置时MSP1+1保护的倒换过程,分析同步数字体系(synchronous digital hierarchy SDH)传输设备在MSP1+1保护倒换中的倒换机制及倒换过程中的业务传输流向,找出了因一次实施光缆业务转移过程中造成A变电站至B变电站光传输中断的真正原因,从而为广东电网电力通信设备的评测工作积累经验。
