基于光电反馈环单元时钟提取与解复用的160 Gb/s OTDM 信号100 km传输

提出了一种能够同时对高速光时分复用技术信号解复用与时钟提取的光电反馈环单元.在接收端，采用光电反馈环单元，信号单次通过即可同时完成160 Gb/s到10 Gb/s的解复用与时钟提取：两级电吸收调制器级联工作方式缩减了采样窗口宽度，满足了解复用小于6.25 ps超窄采样窗口的要求|而闭合环路的锁相同步工作方式，使所提取的时钟信号抖动（Jitter RMS）由2.4 ps降至450 fs.基于该结构，实验上成功实现了无误码的100 km 160 Gb/s光时分复用技术传输及传输后无误码地解复用与时钟提取，功率代价小于3 dB.

160 Gbit/s OTDM Transmission over 100 km Using Opti-electronics Feedback Loop for Simultaneous Clock Recovery and Demultiplexing

A single channel 16×10 Gb/s OTDM transmission over 100 km fiber is experimentally demonstrated. In the receiver, an opto-electric feedback loop is proposed for simultaneous 10 Gb/s clock recovery and 160 Gb/s to 10 Gb/s demultiplexing. The loop consists of a pair of electro-absorption modulators and a 10 Gb/s clock recovery module. By cascading electro-absorption modulators, the switching window is decreased from 25 ps to 5 ps and the synchronous problem in demultiplexing between clock and data is eliminated using the recovered clock as the feedback in the close loop, the jitter of recovered clock is less than 450 fs. Based on the loop, without using optical filters and eliminating PMD in the transimission line, error free 16×10 Gb/s OTDM 100 km transmission is successfully realized with power penalty less than 3 dB.