AI Xing-fang, YUAN Xiu-hua, CHEN Wen-jing. A new OCDM technology of QPSK coherent phase encoding in time domain. [J]. (5):33-35(2004) DOI: 10.13756/j.gtxyj.2004.05.011.
A new OCDM technology of QPSK coherent phase encoding in time domain
摘要
介绍了光码分复用(OCDM)的原理
分析比较了常用OCDM技术的优缺点
根据四相位序列中的A序列提出了用四相相移键控(QPSK)实现时域相干相位编码的OCDM新技术
并通过数值模拟计算选出了相关特性好的4个码组
用于实现Tbit/s超高速光纤传输实验系统
可大大提高传输速率及频带利用率.
Abstract
The principle of OCDM is introduced and the usual OCDM technologies are analysed and compared. A new OCDM technology of QPSK coherent phase encoding in time domain for Tbit/s ultra-fast optic fiber transmission system is proposed according to family a of 4-phase sequences
which can improve the transmission rate and spectral efficiency greatly. Four optical codes with good orthogonality are selected through numerical simulate calculation.