The Research and Design of the 40Gbit/s High Raman Gain of DCF for Long Distance DWDM Transmission System

• Main Authors: Fang-Yi Chen, 陳芳逸
• Other Authors: 賴柏洲
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/h5t6fg

碩士 === 國立臺北科技大學 === 電腦與通訊研究所 === 96 === In order to transmit 40Gbit/s data for long distance, the thesis will discuss using the Raman characteristics of dispersion compensation fiber (DCF) to construct a Raman amplifier. The 40Gbit/s data will be modulated by three modulation formats, NRZ, RZ, and CSRZ. Two kind of devices, i.e., single mode fiber (SMF)+DCF and large effective area fiber (LEAF)+DCF are employed to evaluate the effect of transmitting 40Gbit/s different modulation formats over 800km distance. Experimental results indicate that the Raman amplifier constructed by DCF has low noise finger (NF), wide bandwidth, and the request amplifier number in system are fewer than EDFAs. Comparing the results of three modulation formats transmitted in the two devices, it shows that CSRZ is the most suitable one for 40Gbit/s data without complex components.