半导体光电, 2012, 33 (2): 249, 网络出版: 2012-05-22
多速率接收及时钟数据恢复光纤激光传输实验研究
Experimental Study on Fiber Laser Transmission Based on Multispeed Receiving and Clock Data Recovery
摘要
基于84km光传输链路, 对L波段光纤激光器进行了多速率接收及时钟数据恢复实验。采用伪随机序列非归零(NRZ)码、高性能LiNbO3电光晶体调制器, 调制速率从622Mb/s到2.7Gb/s。实验所用光纤激光器输出中心波长1610.28nm, 线宽0.1nm, 边模抑制比大于45dB, 输出功率稳定性优于0.02dB。对多速率接收眼图进行了测试, 其各速率信号眼图张开度好、眼皮厚度小, 结果表明测试系统无码间干扰和信号畸变, 信号的信噪比较高。在误码率为10-12时, 接收灵敏度可达到-30.62dBm, 过载光功率为-4.1dBm。分析了影响系统传输质量的因素, 研究了高速率下信号与时钟恢复后不同步的问题。
Abstract
With the development of highspeed and masscapacity fiber optical communication technology, the multispeed modulating signal is adopted for different demands. Based on 84km optical transmission links, experiments were carried out on the multispeed receiving and clock data recovery of Lband fiber laser. Employing NRZ format and LiNbO3 electrooptic modulator, the modulation rate was set from 622Mb/s to 2.7Gb/s. For the Lband fiber lasers used in experiments, the center wavelength is 1610.28nm, the linewidth is 0.1nm, SMAR is more than 45dB, and output power stability is better than 0.02dB. The multirate receiving eyediagram was tested, and the results show that the stretching of the eyediagrams is ideal and the eyelid is thin. The coding jam and signal aberrance are not detected, and signalnoise ratio is fine. The sensitivity of receiver is about -30.62dBm when BER is 10-12, and the overload power is -4.1dBm. The factors influencing the transmission quality were analyzed and the problem of nonsynchronization between signal and clock recovery in high speed modulation was studied.
白冰, 郭玉彬, 赵晓晖. 多速率接收及时钟数据恢复光纤激光传输实验研究[J]. 半导体光电, 2012, 33(2): 249. BAI Bing, GUO Yubin, ZHAO Xiaohui. Experimental Study on Fiber Laser Transmission Based on Multispeed Receiving and Clock Data Recovery[J]. Semiconductor Optoelectronics, 2012, 33(2): 249.