多通道光纤旋转连接器  

Multi-Channel Fiber Optic Rotary Joint

作　　者：贾大功[1] 张以谟[1] 王光辉[1] 张红霞[1] 井文才[1] 周革[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院光电信息技术科学教育部重点实验室,天津300072

出　　处：《天津大学学报》2006年第B06期129-132,共4页Journal of Tianjin University(Science and Technology)

基　　金：国家自然科学基金(60377031;60577013);国家"973"计划资助项目(2003CB314907).

摘　　要：光纤旋转连接器是一种无源光纤器件,一般被用来耦合光信号通过一个旋转连接面．目前利用光互连技术设计的多通道光纤旋转结构比较复杂,故设计了一种无源多路空间互连光纤旋转连接器．该连接器利用空间光互连技术和波分复用技术传榆多路光信号．测试了多路旋转连接器在1310nm和1550nm波段下的性能,可以得知：在1310nm波段旋转连接器的插入损耗小于1．55dB,旋转变化量最大为0．28dB,1550nm波段的最大插入损耗为1．20dB,旋转变化量小于0．43dB；旋转连接器2个通道之间的隔离度大于31dB．Fiber optic rotary joint （ FOR J） is one of passive components, which is used to transmit optical signals from a stationary platform to a rotating platform through a relatively rotating interface. A multi-channel FOR J, by incorporating spatial interconnection and wavelength division multiplexing （WDM） technologies, is proposed and fabricated. It provides high data rate （ over GBPS） and bi-directional signals transmission and includes an optical coupling system, isolators and relative WDM components. The insertion loss of this multichannel FORJ is measured through a light wave multi-meter （LM）, while the output spectrum is monitored using the optical spectrum analyzer （OSA）. The maximum insertion loss at wavelength window 1 310 nm is about 1.55 dB and the insertion loss at wavelength window 1 550 nm is less than 1.20 dB. The insertion loss variation due to rotation at wavelength window 1 310 nm and 1 550 nm is less than 0. 28 dB and 0. 43 dB, respectively.The test isolation between the 1 310 nm and 1 550 nm optical signals of all outputs is more than 31 dB. This multi-pass FORJ meets the requirements in most applications.

关 键 词：空间互连 光纤旋转连接器 波分复用 插入损耗 隔离度 

分 类 号：TN929[电子电信—通信与信息系统]