High-Extinction-Ratio Periodic Pulse Signal Generation Based On MZ Modulator

被引：0
|
作者：
Li, Hao [1 ]
Ling, Yun [1 ]
Yin, Yu [1 ]
Zhou, Heng [1 ]
Qiu, Kun [1 ]
机构：
[1] Univ Elect Sci & Technol China, Educ Minist China, Key Lab Opt Fiber Sensing & Commun, Chengdu, Sichuan, Peoples R China
来源：
2017 16TH INTERNATIONAL CONFERENCE ON OPTICAL COMMUNICATIONS & NETWORKS (ICOCN 2017) | 2017年
关键词：
Extinction ratio; Optical Time Domain Reflectometer; Mach-Zehnder modulator;
D O I：
暂无
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：
High extinction ratio is needed in high precision Optical Time Domain Reflectometer (OTDR) to enlarge the dynamic range. By transmitting part of pulse signal modulated by a Mach-Zehnder (MZ) optical modulator back to the input of the modulator via a feedback circuit, the pulse signal can be multi-modulated by one MZ optical modulation. And this technique offers great enhancements in the performance of extinction ratio and peak power of the output pulse. This paper present a theoretical analysis of this system, give out a system-parameters-setting methods to make the result output from the system is falling in line with expectation. A simulation platform and computer simulation are done to validate the validity of the system.
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页数：3
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