| getplmm32 |
2007-05-09 18:51 |
System Efficiency : 0.999138 ^IC|3sr
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Receiver Efficiency : 0.945327 g.z/%Lp K
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Coupling Efficiency : 0.944512 (-0.2479 dB) k2O==IG]6
! 5 ]/2
Maximum Efficiency : 0.995227 O~igwFe
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The system efficiency is the fraction of the energy in the source [x9eamJ,H
beam that exits the optical system. This value is determined by UF0PWpuO
the input na, entrance pupil size and position, apodization, UXe @c@3
transmission of the optics, and vignetting. G;`+MgJ)
DQwbr\xy\
The receiver efficiency is the fraction of the transmitted energy [{ '` |
that couples from the exit pupil to the receiving fiber. This <sn^>5Ds
value is determined by aberrations and the na of the receiving fiber. +jQW 6k#
-k!UcMWP
The coupling efficiency is the fraction of energy radiated w 8T#~Dc
by the source that couples into the receiver. This is the [9*+s
product of the system and receiver efficiencies. (AV j_Cw
VYik#n>|Gp
The maximum efficiency is the coupling efficiency if there 7)<&,BWc
were no aberrations. qJrK ?:O;
[& "`2n
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. lP0'Zg(
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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