[求助]用ZEMAX计算光纤的耦合效率 [复制链接]

我用ZEMAX计算光纤的耦合效率，可是我发现当接收光纤的数值孔径增大时耦合效率反而降低了，这是怎么回事呢？

模场分布约接近，耦合效率越高，跟NA无关

我也想知道，同问

我也想知道

谢谢  学学

能否请问五楼的大侠怎么做到的，谢谢啊~~335797507@qq.com

            

System Efficiency              :      0.999138 6pse@x?  
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Receiver Efficiency            :      0.945327 Sn]A0J_  
RK0IkRXQd  
Coupling Efficiency            :      0.944512 (-0.2479 dB) y? g7sLDc  
WJ@,f%=<~  
Maximum Efficiency              :      0.995227 `i
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In
r%4&!e  
The system efficiency is the fraction of the energy in the source Y!H"
LI  
beam that exits the optical system. This value is determined by |v+b?@  
the input na, entrance pupil size and position, apodization, IlVi1`]w  
transmission of the optics, and vignetting. sXUM,h8$!+  
dNR4h  
The receiver efficiency is the fraction of the transmitted energy P~&X$H%e  
that couples from the exit pupil to the receiving fiber. This C`ok{SNtUy  
value is determined by aberrations and the na of the receiving fiber. R[z6 c)  
^t*BWJxPC  
The coupling efficiency is the fraction of energy radiated +W}f0@#)<  
by the source that couples into the receiver. This is the & 3gni4@@  
product of the system and receiver efficiencies. R]dB Uu  
 `@p*1  
The maximum efficiency is the coupling efficiency if there _LK(j;6K}  
were no aberrations. wo/H:3^N  
,[x'S>N  
数值孔径不是越大越好呀,当耦合光学系统的模式与你光线的模式完全匹配时,耦合效率最大. Vj_ $%0  
耦合效率的计算有一个积分过程,还是比较复杂的.

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有没有这方面的书籍？