【摘要】 针对水下无线光通信链路中近距功率饱和与远距功率不足导致的光信号采集失效的难题，提出一种大动态能量自适应蓝/绿激光探测方法。该方法在水下无线光通信系统中加入由电控液晶光阀、可调增益光电倍增管及FPGA板卡组成的增益可控探测模块，该模块在链路功率和探测器增益两个维度对通信链路形成闭环调控，以保证光电倍增管始终工作在最优状态，从而实现水下远距离、高速、大动态范围无线光通信。更多还原

【Abstract】 In this paper, a blue or green laser detection method with large dynamic and energy adaptability is proposed to solve the problem of optical signal acquisition failure caused by the power saturation in short distance and the power shortage in long distance in underwater optical wireless communication links.A gain-controllable detection module consisting of an electronic control liquid crystal light valve, an adjustable gain photomultiplier tube and an FPGA board is added into the underwater wireless optical communication system, which forms a closed-loop control on the communication link in two dimensions of link power and detector gain to ensure that the photomultiplier tube is always working in an optimal state, realizing the underwater long distance, high speed and large dynamic wireless optical communication.更多还原