基于半导体光放大器偏振旋转的全光缓存器  

All-Optical Buffer Based on Polarization Rotation in Semiconductor Optical Amplifier

作　　者：程木[1] 吴重庆[1] 赵瑞[1] 宋超[1] 李政勇[1] 王亚平[1] 

机构地区：[1]北京交通大学光信息科学与技术研究所发光与光信息技术教育部重点实验室,北京100044

出　　处：《光学学报》2008年第10期1898-1902,共5页Acta Optica Sinica

基　　金：国家863计划(2007AA01Z270);国家自然科学基金(60577020;60672004)资助课题

摘　　要：全光缓存器可实现数据包在光域内的缓存,是全光路由、全光计算以及全光交换的关键部件之一。提出了一种基于半导体光放大器(SOA)中非线性偏振旋转(PR)的光纤环型全光缓存器结构;提出了一种利用偏振主态(PSP)寻找两个正交线偏振态以及在线实时测量光纤中偏振态的方法。通过改变SOA的注入电流,实现了对两个正交偏振态转化的控制,利用这两个正交的线偏振态,实现了信号的"写"入和"读"出。利用该结构的缓存器,实现了2.5 Gb/s的1024 bits数据包6圈的缓存,缓存后的信号波形良好。All-optical buffer can store the packets in optical-domain and is a key component in all-optical router, all-optical calculation and all-optical switching. A novel all-optical buffer based on nonlinear polarization rotation in semiconductor optical amplifier （SOA） and a method which utilizes the principal states of polarization （PSP） to find two orthogonal linear states of polarization （SOPs） were proposed. This method can measure the SOP on-line. By adjusting the injection current of SOA the conversion between two orthogonal linear SOPs was realized. The operation of the proposed optical buffer at 2.5 Gb/s was experimentally setup. The writing in and reading out operations of 1024 bits random data for 6 circulations by this optical buffer were demonstrated.

关 键 词：光纤通信 全光包交换 全光缓存器 偏振旋转 偏振主态 半导体光放大器 

分 类 号：TN929.11[电子电信—通信与信息系统]