| getplmm32 |
2007-05-09 18:51 |
System Efficiency : 0.999138 X}$S|1CjO
^^#A9A M
Receiver Efficiency : 0.945327 }R^{< {KVJ
k:sh:G+=$d
Coupling Efficiency : 0.944512 (-0.2479 dB) Y2Bu,/9^
x>cu<,e$d\
Maximum Efficiency : 0.995227 zw? 6E8$h
DcS~@ ;
The system efficiency is the fraction of the energy in the source bGZy0.
beam that exits the optical system. This value is determined by # V +e
the input na, entrance pupil size and position, apodization, 2; /hFwm
transmission of the optics, and vignetting. D%zIm,bf
< $E8T>U
The receiver efficiency is the fraction of the transmitted energy =B 9 U
that couples from the exit pupil to the receiving fiber. This ]P .S5s'
value is determined by aberrations and the na of the receiving fiber. 5s;#C/ZZ
mYCGGwD
The coupling efficiency is the fraction of energy radiated $\H>dm
by the source that couples into the receiver. This is the qp Z ".
product of the system and receiver efficiencies. d=[ .
%llG/]q#
The maximum efficiency is the coupling efficiency if there < javZJ
were no aberrations. 3XIxuQw f
,~v1NK *
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. NJ.kT uk
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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