PERFORMANCE ANALYSIS AND SIMULATION OF OCDMA SYSTEM BASED ON FBGs ENCODER/DECODER  

作　　者：Li Chuanqi Sun Xiaohan Je-Myung Jeong 

机构地区：[1]Dept of Physics, Nanjing University of Information Science ＆ Technology, Nannjing 210044, China [2]Dept of Electronics Engineering, Southeast University, Nanjing 210096, China [3]Optical Commun. Lab, Div. of Electric and Computer Eng., Hanyang Univ., Seoul, 133-791, Korea

出　　处：《Journal of Electronics(China)》2005年第6期663-670,共8页电子科学学刊（英文版）

基　　金：Supported by the Natural Science Research Foundation of Jiangsu Higher-Learning Insti-tution (No.04jkb510057).

摘　　要：The encoding/decoding scheme based on Fiber Bragg Grating (FBG) for Optical Code Division Multiple Access (OCDMA) system is analyzed and the whole process from transmitting end to receiving end is researched in detail. The mathematical mode including signal transmission, summing, receiving and recovering are established respectively. One of the main sources of Bit Error Rate (BER) of OCDMA system based on FBGs is the unevenness of signal power spectrum, which leads to the chip powers unequal with each other. The Signal to Interfere Ratio (SIR) and BER performance of the system are studied and simulated at the case with uneven distribution of chips' powers.The encoding/decoding scheme based on Fiber Bragg Grating （FBG） for Optical Code Division Multiple Access （OCDMA） system is analyzed and the whole process from transmitting end to receiving end is researched in detail. The mathematical mode including signal transmission, summing, receiving and recovering are established respectively. One of the main sources of Bit Error Rate （BER） of OCDMA system based on FBGs is the unevenness of signal power spectrum, which leads to the chip powers unequal with each other. The Signal to Interfere Ratio （SIR） and BER performance of the system are studied and simulated at the case with uneven distribution of chips＇ powers.

关 键 词：Optical Code Division Multiple Access （OCDMA） Fiber Bragg Grating （FBG） Optical encoder/decoder 

分 类 号：TN929.11[电子电信—通信与信息系统]