Li Zhaohui, Jian Zhao, Cheng Linghao, Yang Yanfu, Lu Chao, Lau Alan Pak Tao, Yu Changyuan, Tam H Y, Wai P K A
Institute of Photonics Technology, Jinan University, Guangzhou, China.
Opt Express. 2010 Feb 1;18(3):3149-57. doi: 10.1364/OE.18.003149.
In this paper, we theoretically and experimentally demonstrated the residual chromatic dispersion (CD) monitoring of 100-Gbit/s carrier suppress return-to-zero differential quadrature phase shift keying (CS-RZ DQPSK) signals by evaluating the asymmetry ratio of delay tap asynchronous sampling. This scheme can easily differentiate the positive and negative residual CD of the fiber link. The resolution of this scheme is better than 8 ps/nm and the measurable range is around +/- 24 ps/nm for 100 Gbit/s CS-RZ DQPSK signals. We can also simultaneously realize both signed CD monitoring and demodulation of CS-RZ DQPSK signal based on only one demodulator.
在本文中，我们通过评估延迟抽头异步采样的不对称率，从理论和实验上证明了对100 Gbit/s载波抑制归零差分正交相移键控（CS-RZ DQPSK）信号的残余色度色散（CD）监测。该方案能够轻松区分光纤链路的正负残余CD。对于100 Gbit/s CS-RZ DQPSK信号，该方案的分辨率优于8 ps/nm，可测量范围约为±24 ps/nm。我们还可以仅基于一个解调器同时实现CS-RZ DQPSK信号的带符号CD监测和解调。
