自由空间光通信的抗干扰接收系统  

Anti-jamming receiver system of free space optical communication

作　　者：田佳峻[1] 姚勇[1] 赵新辉[1] 孙云旭[1] 陈德应[2] 

机构地区：[1]哈尔滨工业大学深圳研究生院激光信息技术研究中心,广东深圳518055 [2]哈尔滨工业大学光电子技术研究所,黑龙江哈尔滨150080

出　　处：《红外与激光工程》2009年第1期96-100,共5页Infrared and Laser Engineering

基　　金：航天预研基金资助项目(CAST200725);广东省自然科学基金资助项目(8151805707000004)

摘　　要：根据现代战场通信保密及抗干扰的需要,提出一种新型自由空间光通信接收机模型。该接收机结合自适应调相阵列和非线性光开关技术,可以实现对光信号的波前畸变的实时矫正,提高了无线光通信系统接收机的性能,同时也具备防强激光攻击的功能。分析求解了多路光信号合束的相位匹配条件,提出了闭环锁相方法,给出了非线性定向耦合器用作光开关的理论模型和优化方法,以及降低门限功率值的方法。该系统模型能够满足战场及时保密通信的要求,并具有防备强激光攻击的功能,适合现代战场通信的需要,为现代战场通信方式提供了一种新思路。A new free space optical communication receiver system was proposed, which was suitable for secure communication and anti-jamming in modern war field. In this system, adaptive phase modulation array was employed to correct the wavefront distortion of the optical signal real- time, and improve the performance of the receiver. The nonlinear optical switch was employed to countercheck intense laser attack. The closed loop phase lock method was proposed and the phase matching term for multiplexing optical signals coupling had been solved. The theory and optimized method for nonlinear directional coupler as optical switch were also proposed and discussed. The method was also studied to decrease the threshold value of power for the optical switch. The new secure communication system caters for secure and anti-jamming communication requirement in modern war field, and is potential to be used.

关 键 词：自由空间光通信 自适应光学 光电对抗 光开关 

分 类 号：TN929.12[电子电信—通信与信息系统]