| getplmm32 |
2007-05-09 18:51 |
System Efficiency : 0.999138 ]BP/KCjAI<
GfJm&'U&
Receiver Efficiency : 0.945327 L`x:Y>C(
'7wI 2D
Coupling Efficiency : 0.944512 (-0.2479 dB) 8:$kFy\A'
}^?dK3~q
Maximum Efficiency : 0.995227 [ G[HQ)A
+tdt>)a
The system efficiency is the fraction of the energy in the source RE oFP;H~
beam that exits the optical system. This value is determined by 8_Y{7;<ey
the input na, entrance pupil size and position, apodization, N ^ h, [
transmission of the optics, and vignetting. ;{q7rsE
A7+eWg{
The receiver efficiency is the fraction of the transmitted energy @XDU !<N
that couples from the exit pupil to the receiving fiber. This R7x4v
value is determined by aberrations and the na of the receiving fiber. \[]36|$LS
WsJ3zZc
The coupling efficiency is the fraction of energy radiated =
Yh>5A
by the source that couples into the receiver. This is the 2 p@Rr7
product of the system and receiver efficiencies. 3UD_2[aqN(
Cg}cD.
The maximum efficiency is the coupling efficiency if there 8Th |'
were no aberrations. `"zX<
_
97F
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. Z\(+ awv
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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