中国激光, 2009, 36 (3): 554, 网络出版: 2009-03-17
直接检测的光正交频分复用信号光纤传输系统实验研究
Experimental Investigation of Direct-Detection Optical Orthogonal Frequency-Division Multiplexing Transmission System
光纤通信 光调制 正交频分复用 光正交频分复用 optical communication optical modulation orthogonal frequency-division multiplexing optical orthogonal frequency-division multiplexing
摘要
研制了直接检测的光正交频分复用(OOFDM)光纤传输实验系统。实验中产生了2 Gbit/s的正交相移键控(QPSK)、正交频分复用(OFDM)光信号,并成功地在标准单模光纤中传输了200 km。测量得到在误码率为10-6时,单模光纤传输200 km后的功率代价小于2 dB。比较了光纤传输前后OFDM信号的波形、频谱以及星座图,发现光正交频分复用信号能很好地抵抗光纤中的色散效应。
Abstract
An experimental system of direct-detection optical orthogonal frequency-division multiplexing (OOFDM) signal transmission over fiber was successfully built. In this experiment, the 2 Gbit/s quadrature phase shift keging (QPSK) optical OFDM signals are generated and transmitted over 200 km in single-mode fiber. After transmission in single-mode fiber over 200 km the power penalty is less than 2 dB at the bit error rate of 10-6. Comparing of waveform, electrical spectrum and constellation before and after transmission over fiber, the experimental results show that the optical OFDM signal can overcome the effect of chromatic dispersion in fiber.
陈林, 曹子峥, 董泽, 余建军. 直接检测的光正交频分复用信号光纤传输系统实验研究[J]. 中国激光, 2009, 36(3): 554. Chen Lin, Cao Zizheng, Dong Ze, Yu Jianjun. Experimental Investigation of Direct-Detection Optical Orthogonal Frequency-Division Multiplexing Transmission System[J]. Chinese Journal of Lasers, 2009, 36(3): 554.