| getplmm32 |
2007-05-09 18:51 |
System Efficiency : 0.999138 ~;8I5Sge
>L=;"+B0U&
Receiver Efficiency : 0.945327 ' Rc#^U*n
t3a#%'Dv
Coupling Efficiency : 0.944512 (-0.2479 dB) x9&p!&*&IT
n +rM"Gxz
Maximum Efficiency : 0.995227 !VRo *[yD@
uFo/s&6K
The system efficiency is the fraction of the energy in the source "Vy WT
beam that exits the optical system. This value is determined by s&VOwU
the input na, entrance pupil size and position, apodization, 7h`^N5H.q
transmission of the optics, and vignetting. P$OUi!"
A? r^V2+j
The receiver efficiency is the fraction of the transmitted energy eF5;[v
that couples from the exit pupil to the receiving fiber. This ^Q\X Gl
value is determined by aberrations and the na of the receiving fiber. tF%QH[
+ {e`]t>_
The coupling efficiency is the fraction of energy radiated QZ~0o7
by the source that couples into the receiver. This is the ~j"3}wXc5
product of the system and receiver efficiencies. 6@YH#{~Zpv
*V DVC0R
The maximum efficiency is the coupling efficiency if there X3yS5wh d(
were no aberrations. r^5jh1
PS}73Y #
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. d @ (vg
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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