| getplmm32 |
2007-05-09 18:51 |
System Efficiency : 0.999138 fuRCM^U(
"+SnHpNx
Receiver Efficiency : 0.945327 {8b6M
~ m Av)JK
Coupling Efficiency : 0.944512 (-0.2479 dB) u-v/`F2wN
sw<GlF "
Maximum Efficiency : 0.995227 v|DgRPY
ft | W
The system efficiency is the fraction of the energy in the source nPlg 5&E
beam that exits the optical system. This value is determined by ! @EZ
the input na, entrance pupil size and position, apodization, A7 U]wW9
transmission of the optics, and vignetting. =$kSvCjP
;UU`k k
The receiver efficiency is the fraction of the transmitted energy 3a|I | NP
that couples from the exit pupil to the receiving fiber. This #)A.yK`u
value is determined by aberrations and the na of the receiving fiber. eI20)t`j
SSCyq#dl$
The coupling efficiency is the fraction of energy radiated ,2yIKPWk
by the source that couples into the receiver. This is the IR_&dWHyc
product of the system and receiver efficiencies. -@=As00Bg
fX o$1!
The maximum efficiency is the coupling efficiency if there }:Q Q{h_
were no aberrations. L_@P fI
'YFy6rds
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. 6*W7I- A
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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