基于不同Q值F-P滤波器的40GHz全光帧时钟提取  

Experimental research on 40 GHz all-optical packet clock recovery based on F-P filters with variable finenesses

作　　者：张爱旭[1] 于晋龙[2] 王文睿[2] 韩丙辰[2] 吴波[2] 

机构地区：[1]天津大学计算机科学与技术学院 [2]天津大学电信学院光纤通信实验室

出　　处：《光电子．激光》2008年第6期763-767,共5页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60572013);国家自然科学基金重点资助项目(60736035);国家“863”计划资助项目(2007AA01Z272);天津市自然科学基金资助项目(06YFJMJC01400);教育部新世纪人才计划资助项目

摘　　要：对用不同Q值的F-P滤波器提取40GHz全光帧时钟的方案进行了实验比较。实验表明,用高Q值F-P滤波器提取的帧时钟信号好,但是建立、消失时间长;用低Q值F-P滤波器提取的帧时钟,信号质量较差,但可以保证帧时钟的快速建立和快速消失。实验还表明,利用光半导体放大器(SOA)的自增益调制效应(SGM)可以有效地提高时钟的建立速度,对于时钟信号的抖动也有一定程度的改善。抖动的改善与滤波器的Q值有直接的关系。用上述方案对40GHz的帧信号进行了全光帧时钟提取,得到了建立时间为15个信号周期,消失时间为115个信号周期,抖动为2.35ps的帧时钟信号。The schemes of all-optical packet dock recovery based on the Fabry-Perot filters with variable finess at 40 GHz are demonstrated. The experimental results as follows;The usage of the F-P with the higher Q benefits the quality of the signals but leads to that both of establishing and vanishing of the packet clock take long time,on the contrary,the usage of the F- P with the lower Q makes the packet establish and vanish quickly but induces the degradation of the signals. It is also presented that the self gain-modulation（SGM） effect in SOA can accelerate the establishing process of the packet clock. As function of low-pass filter,the SGM of SOA contributes to suppress the amplitude fluctuation of the dock packet, according to the variable Q of the F-P. The packet clock recovery at 40 GHz is experimentally achieved with 15 code period establishing time,115 code period vanishing time and 2.35 ps jitter.

关 键 词：全光帧时钟提取 FABRY-PEROT滤波器 半导体光放大器 

分 类 号：TN929.11[电子电信—通信与信息系统]