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。
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.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2009年第3期554-557,共4页
Chinese Journal of Lasers
基金
国家863计划(2007AA01Z263)
湖南省自然科学基金(06JJ50108)
教育部光通信和光波技术重点实验室(北京邮电大学)开放基金资助
关键词
光纤通信
光调制
正交频分复用
光正交频分复用
Bit error rate
Electric power transmission
Fibers
Frequency allocation
Light modulation
Multiplexing
Orthogonal frequency division multiplexing
Photonics
