基于Crossbar电光开关网络的偏振结构自由空间全光路由器  

Free-Space All-Optical Router with Polarization Structure Based on Crossbar Electro-Optic Switch Network

作　　者：许俊[1,2] 职亚楠[1] 侯培培[1] 孙建锋[1] 周煜[1] 刘立人[1] 

机构地区：[1]中国科学院上海光学精密机械研究所,中国科学院空间激光通信及检测技术重点实验室,上海201800 [2]中国科学院大学,北京100049

出　　处：《光学学报》2013年第9期47-53,共7页Acta Optica Sinica

基　　金：国家自然科学基金(61275110)

摘　　要：设计了一种基于crossbar电光开关网络的偏振结构广义无阻塞自由空间全光路由器,利用电光晶体开关作为入射光束的偏振控制器,偏振分束棱镜作为分束元件,提出自由空间2×2和3×3全光路由器的基本结构,能够实现自由空间2×2和3×3全光路由器的任意通道的广义无阻塞连接,并可以实现N×N全光路由器的拓展。这种自由空间全光路由器具有结构简单、插入损耗低、响应速度快、无阻塞等优点,可以实现实时可编程控制,适用于空天全光路由组网。对自由空间2×2全光路由器进行了实验验证,实现了2×2光互连,消光比达到27dB,最大插入损耗约为0.73dB。A generalized non-blocking free-space all-optical router with polarization structure based on the crossbar switch network is designed. Electro-optic switch is used as the beam polarization controller and the polarization beam splitter is used as beam-separating element. Basic structures of the 2 × 2 and 3 × 3 all-optical routers are proposed. They can achieve generalized non-blocking connection between any two channels in free-space and realize the extension of the N × N all-optical router. The novel free-space all-optical router is simple and reliable. It has the advantages of fast response, non-blocking, and high speed. It is easy to realize the programmable logic controller （PLC） control function. It is suitable for air-space all-optical routing network. The experimental verification of the free-space 2 × 2 all-optical router is implemented and 2 × 2 optical interconnection is realized. The extinction ratio is 27 dB and the maximum insertion loss is 0.73 dB.

关 键 词：光通信 自由空间全光路由器 电光开关 偏振分束棱镜 无阻塞连接 crossbar电光开关网络 

分 类 号：TN256[电子电信—物理电子学]