光通信技术2017，Vol.41Issue(2)：29-32,4.DOI:10.13921/j.cnki.issn1002-5561.2017.02.008
基于光梳和RSOA双向OFDM-PON传输系统的OSNR
OSNR of bidirectional OFDM-PON transmission system based on optical comb and RSOA
摘要
Abstract
In order to improve the optical signal-to-noise of downlink and uplink in the optical transmission system,the OSNR of bidirectional OFDM-PON system based on coherent comb and SOA is studied.First,using phase modulation on seed light to RSOA by RF-driven external optical phase modulator,SBS threshold can be raised to +(11～14) dBm.Then the effect of RBS on OSNR is investigated theoretically and experimentally.It reveals when the optical power output from RSOA in upstream is equal to the optical power launched into feeder fiber in downstream,the uplink OSNR associated with RBS noise achieves 20dB,while the downstream OSNR is 23dB.Finally,in the condition that receiver noise is dominated by ASE of optical amplifiers,the OSNR formula of downlink and uplink and relations between receive SNR and OSNR are presented.关键词
正交频分复用/反射式半导体光放大器/光信噪比/光梳状波/双向传输Key words
OFDM/RSOA/OSNR/optical comb/bidirectional transmission分类
信息技术与安全科学引用本文复制引用
陈荣荣,邝彩霞,王鹏,汪敏,林如俭..基于光梳和RSOA双向OFDM-PON传输系统的OSNR[J].光通信技术,2017,41(2):29-32,4.基金项目
国家自然科学基金(批准号:61132004,61275073,61420106011)资助. （批准号:61132004,61275073,61420106011）
