CAJ | 학술논문

为丁在激光告警中实现全方位角度探测,并且在一定探测精度的前提下尽量使结构简单、稳定,提出了基于偏振编码的光纤天线的测量方法.该方法是通过在不同方向上放置不同起偏角的偏振片编码,再将各个方向的光纤耦合成一束,经准直透镜组射入解偏光路中,通过判断电路分析得到激光入射方向.在计算及仿真了经偏振片后激光能量的衰减,求解电路能检测到最弱激光的幅值与偏振衰减最大时激光引起的响应电流的幅值的关系,得到在激光角分辨率为30°时满足探测要求.实验显示,在初始激光功率在20～150 mW的条件下,每20°划分的偏振角度中设定最小识别电压为20 mV时,满足全方位激光方向探测的要求.
위정재격광고경중실현전방위각도탐측,병차재일정탐측정도적전제하진량사결구간단、은정,제출료기우편진편마적광섬천선적측량방법.해방법시통과재불동방향상방치불동기편각적편진편편마,재장각개방향적광섬우합성일속,경준직투경조사입해편광로중,통과판단전로분석득도격광입사방향.재계산급방진료경편진편후격광능량적쇠감,구해전로능검측도최약격광적폭치여편진쇠감최대시격광인기적향응전류적폭치적관계,득도재격광각분변솔위30°시만족탐측요구.실험현시,재초시격광공솔재20～150 mW적조건하,매20°화분적편진각도중설정최소식별전압위20 mV시,만족전방위격광방향탐측적요구.
For detection of the all-directional angle in the laser warning with the simple structure and stabilized performance, laser direction measurement method based on the polarization code optical fiber antenna was proposed. This method is to lay the polarizing code of the different polarizing eyepiece angle in the different direction. Then, each direction's optical fiber was coupled into a hunch of optical fibers. After the focusing collimation set of lenses injection solution leaning path of rays, the laser incidence direction was obtained through the judgment circuit analysis. In calculating and the simulating the polarizing laser energy attenuation, the solved electric circuit could examine the response electric current peak-to-peak value relation which was caused by the laser when the weakened polarization is biggest and the laser is weakest. The survey requirements were satisfied when the laser angular resolution is 30°. The experiment demonstrates that the smallest recognition voltage is 20mV in each 20° division's polarization angle when original laser power is from 20 mV to 15020mV, which meets the requirements of all-directional laser direction survey.