下一代光接入网光梳状谱发生器研究

项目名称： 下一代光接入网光梳状谱发生器研究

项目编号： No.61275073

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 宋英雄

作者单位： 上海大学

项目金额： 82万元

中文摘要： 本项目从原理上深入研究应用于OFDM-PON、WDM-PON等下一代光接入网的光梳状谱发生器，包括各种梳状谱产生方案的优劣分析，影响谱线平坦度、稳定性及噪声等指标的因数，及对调制信号影响的理论分析。通过对系统链路传递函数的分析及对调制器特性的分析，着重研究循环移频方法（RFS）产生的梳状谱平坦的最优条件及最佳工作参数；通过理论研究光放大器噪声对谱线信噪比的影响，及谱线噪声对上行光环回调制OFDM信号解调的影响；研究提高谱线信噪比、降低相位噪声的方法；研究保持谱线相干性的条件以降低相干解调接入网系统数字信号处理的复杂度；通过优化光梳状谱发生器的结构实现系统小型化，为我国下一代超高速光纤接入网技术的发展提供关键技术及器件支持。

中文关键词： 下一代光接入网；光梳状谱发生器；循环移频梳状光源；级联IM-IM梳状光源；光环回调制

英文摘要： This project focus on the theory and key technology of optical comb generator used in next generation optical access network such as OFDM-PON and WDM-PON, including the analysis on the advantage and disadvantage of various optical comb generation methods, the theoretic analyses on flatness and stable of comb lines and their affection to modulation signals. Through the analysis on the transfer function of system link and the characteristics of modulator, the flat optimal conditions and operating parameters of the comb lines will be studied on the Re-circulating Frequency Shifter (RFS) optical comb generator. The signal to noise ratio (SNR) degradation of comb lines caused by optical amplifier noise, and the EVM degradation of loop-back modulated OFDM signal in upstream direction by comb line noise will be researched theoretically. The methods to improve the SNR and reduce the phase noise as well as the conditions on maintaining coherent in these comb lines to reduce the complexity of digital signal processing in coherent detection optical access network will also be investgated. By optimizing the structure of the optical comb generator to make the system miniaturization, and these will be applied to as the multi-wavelength light source used in the next generation optical access network. These researches will p

英文关键词： Next Generation Optical Access Network；Optical Frequency Comb Generator；Re-circulating Frequency Shifter Comb Light Source；Cascade IM-IM Comb Light Source；Optical Loopback Modulation