| getplmm32 |
2007-05-09 18:51 |
System Efficiency : 0.999138 R{hq1-
1X45~
Receiver Efficiency : 0.945327 6d% |yl
$sTvXf:g
Coupling Efficiency : 0.944512 (-0.2479 dB) ue~?xmZg
`Y5{opG 7-
Maximum Efficiency : 0.995227 wzka4J {
`=B0NC.3
The system efficiency is the fraction of the energy in the source }s 7ibm'
beam that exits the optical system. This value is determined by mn;Wqb/
the input na, entrance pupil size and position, apodization, HcKZmL. wp
transmission of the optics, and vignetting. ji(Y?v hQt
_H (:$=$Q
The receiver efficiency is the fraction of the transmitted energy s,2gd'
that couples from the exit pupil to the receiving fiber. This xr< .r4
value is determined by aberrations and the na of the receiving fiber. O(Tdn;1
' +Gy)@c
The coupling efficiency is the fraction of energy radiated xqA XfJ.
by the source that couples into the receiver. This is the VIi/ =mO]
product of the system and receiver efficiencies. YhzDi>hob
n~wNee
The maximum efficiency is the coupling efficiency if there 6 }>:sr
were no aberrations. 4X prVB
vMQvq9T}
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. ny,a5zEnF
耦合效率的计算有一个积分过程,还是比较复杂的.
|
|
