Chromatic Dispersion Monitoring for NRZ-DPSK System Using Asynchronous Amplitude Histogram Evaluation

被引：2
|
作者：
Wu, Zhao [1 ]
Yu, Yu [1 ]
Zhang, Xinliang [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Coll Optoelect Sci & Engn, Wuhan Natl Lab Optoelect, Wuhan, Peoples R China
来源：
IEEE PHOTONICS JOURNAL | 2012年 / 4卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Nonreturn-to-zero differential phase-shift keying (NRZ-DPSK); asynchronous amplitude histogram; optical performance monitoring; chromatic dispersion; POLARIZATION-MODE DISPERSION;
D O I：
10.1109/JPHOT.2012.2207451
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We propose and demonstrate a chromatic dispersion (CD) monitoring technique for a nonreturn-to-zero differential phase-shift keying (NRZ-DPSK) signal generated with a Mach-Zehnder modulator at 40 Gb/s by analyzing the waveform overshoot after transmission. Without demodulating the NRZ-DPSK signal, the CD up to 120 ps/nm is monitored experimentally via the amplitude of the overshoot. Furthermore, based on the asynchronous amplitude histogram (AAH) evaluation method, a novel histogram processing method, which is more convenient, is proposed and investigated. Experimental results show that the monitoring scheme for CD is independent of optical signal-to-noise ratio (OSNR) within a certain range. This technique needs neither demodulating the signal nor extracting the synchronous clock, and it can be applied to high-order modulation formats at different bit rates.
引用
收藏
页码：1212 / 1219
页数：8
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