40Gbit/s 50GHz间隔DWDM DPSK系统MZDI延迟时间的优化

doi:10.13190/jbupt.200802.34.xiexch

北京邮电大学学报 ›› 2008, Vol. 31 ›› Issue (2): 34-37.doi: 10.13190/jbupt.200802.34.xiexch

40Gbit/s 50GHz间隔DWDM DPSK系统MZDI延迟时间的优化

谢幸初, 陈雪, 周伟勤, 施社平

北京邮电大学光通信与光波技术教育部重点实验室), 北京 100876

收稿日期:2007-08-23 修回日期:1900-01-01 出版日期:2008-04-28 发布日期:2008-04-28
通讯作者: 谢幸初

MZDI Delay Time Optimization of a 40 Gbit/s DWDM DPSK System with 50 GHz Channel-Spacing

XIE Xing-chu, CHEN Xue, ZHOU Wei-qin, SHI She-ping

Key Laboratory of Optical Communication and Lightwave Technologies Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2007-08-23 Revised:1900-01-01 Online:2008-04-28 Published:2008-04-28
Contact: XIE Xing-chu

摘要/Abstract

摘要：

针对差分相移键控(DPSK)信号频谱宽、传输性能受光通道带宽影响大的特点，通过VPItransmissionMaker (VPI)仿真对DPSK系统性能受光通道带宽的影响进行了分析和优化。指出对于40 Gbit/s速率50 GHz通道间隔的密集波分复用（DWDM）网络，DPSK解调器马赫-曾德尔延迟干涉仪(MZDI)的延迟时间应小于1个比特周期，带宽越窄延迟时间应越小；并且建议通过监测传输性能参数反馈调节延迟时间以适应光信号途经光分插复用设备级数的变化使传输性能达到最佳。

关键词: 光通信, 调制码型, 差分相移键控, 马赫-曾德尔延迟干涉仪, 延迟时间 VPI仿真

Abstract:

The effect of channel-spacing on differential phase shift keying （DPSK） systematical performance was analyzed and optimized through VPItransmission maker simulation, aiming at the severe distortion of DPSK signal to narrow channel-spacing for its broad spectrum. It is found that the delay time of the DPSK Mach-Zehnder delay interferometer （MZDI）-demodulator will be less than 1-bit duration for the 40 Gbit/s dense wavelength-division multiplexing（DWDM) system with 50 GHz channel-spacing, and become shorter according to the narrower optical filter bandwidth. Furthermore, the system achieves the optimal transmission performance by matching the variation of the optical add-drop multiplexer (OADM) series, with a method of feedback controlling of the delay time according to the monitored transmission performance indications.

Key words: optical communication, modulation formats, differential phase shift keying, Mach-Zehnder delay interferometer, delay time, VPItransmissionMaker simulation

中图分类号:

TN929.11

谢幸初, 陈雪, 周伟勤, 施社平. 40Gbit/s 50GHz间隔DWDM DPSK系统MZDI延迟时间的优化[J]. 北京邮电大学学报, 2008, 31(2): 34-37.

XIE Xing-chu, CHEN Xue, ZHOU Wei-qin, SHI She-ping
. MZDI Delay Time Optimization of a 40 Gbit/s DWDM DPSK System with 50 GHz Channel-Spacing[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2008, 31(2): 34-37.

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40Gbit/s 50GHz间隔DWDM DPSK系统MZDI延迟时间的优化

MZDI Delay Time Optimization of a 40 Gbit/s DWDM DPSK System with 50 GHz Channel-Spacing

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