| getplmm32 |
2007-05-09 18:51 |
System Efficiency : 0.999138 "c?3 1$6
+WKN&@
Receiver Efficiency : 0.945327 /1D.Ud^
$dWYu"2C D
Coupling Efficiency : 0.944512 (-0.2479 dB) (i?9/8I
"!fwIE G
Maximum Efficiency : 0.995227 HuK Ob4g
c.5u \ I9"
The system efficiency is the fraction of the energy in the source 7Ka 4?@bQ
beam that exits the optical system. This value is determined by "zz b`T[8
the input na, entrance pupil size and position, apodization, 'i : lV'
transmission of the optics, and vignetting. VR%*8=
ykH@kv Qt
The receiver efficiency is the fraction of the transmitted energy )>^ Ge9d]
that couples from the exit pupil to the receiving fiber. This FFe{=H,=
value is determined by aberrations and the na of the receiving fiber. (_+ux1h6^
-N6ek`
The coupling efficiency is the fraction of energy radiated e
'F:LMX
by the source that couples into the receiver. This is the V ]"pM]>3X
product of the system and receiver efficiencies. =P_ *.SgR
O3%#Q3c >3
The maximum efficiency is the coupling efficiency if there vS[\ j
were no aberrations. rY&#g%B6Fp
+ (z[8BJl
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. feeHXKD|
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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