INFLUENCE OF CONNECTION FORMS OF FIBER BRAGG GRATING ON MULTI-CHANNEL DISPERSION COMPENSATION SYSTEM
Abstract
The multi-channel dispersion compensator by using chirped fiber Bragg gratings(CFBGs) has been one of the key technologies of high speed optical fiber communication system. The characteristics of reflection spectrum, time delay and dispersion of CFBGs with different connection forms are studied. By stress modulating and UV post-exposure, the uniform characteristics of the reflection spectrum of CFBGs are increased, and the influence of superposition effect caused by the parallel connection of CFBGs is decreased greatly. At the same time, the interference length is used to optimize the position of the cascaded CFBGs, and the cross talk can be decreased. By using the above optimized CFBGs connection forms,13 different wavelength CFBGs are cascaded in each dispersion compensator, and 20 CFBGs are parallel connected in each channel, a 13×10Gb/s 3100km ultra long G.652 fiber transmission system is successfully implemented without electric regenerator. The power penalty of the carrier-suppressed return-to-zero (CSRZ) code transmission system is only 2.5dB.
Event details
- Event
- TC2 Symposium 2010
- Technical Committee
- TC2
- Place
- Hangzhou, CHINA
- Time
- 11 September 2010 - 13 September 2010
- Website
- http://imeko2010.cjlu.edu.cn