摘要
本文用几何光学的方法对遥远小面源目标及点源目标辐射能量在焦平面处的光纤耦合进行了分析,结果表明:(1)光纤面积有一临界值,当它小于临界值时耦合效率随着面积的增加近似线性地增加,当它大于临界值时,耦合效率增加缓慢;(2)光纤的引入使系统信噪比下降。
The optical fiber coupling in the local plane for the intrared radiation energy emitted from a remote target with small area and a spot larget is analyzed through the geometric optics.The results show that:(1)the cross area of the optical fiber has a critical value.The coupling efficiency linearly increases with increasing the area when the area is less than the value,but very slow when the area is greater than the value;(2) use of the optical fiber in the infrared system will decrease the signal-to-noise.
出处
《红外技术》
CSCD
1991年第6期23-26,共4页
Infrared Technology
