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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。
According to the need of confidentiality and anti-jamming in modern battlefield, a new free-space optical communication receiver model is proposed. The receiver combined with adaptive phase modulation array and non-linear optical switch technology can realize the real-time correction of the wavefront distortion of the optical signal, improve the performance of the receiver of the wireless optical communication system and also have the function of preventing the strong laser attack. The condition of phase matching for multi-channel optical signal combination is analyzed and analyzed. A closed-loop phase locked method is proposed. The theoretical model and optimization method of nonlinear directional coupler for optical switch and the method of reducing the threshold power are given. The system model can meet the requirement of timely confidential communication in the battlefield, and has the function of preventing strong laser attacks. It is suitable for the needs of modern battlefield communications and provides a new idea for modern battlefield communication.