| getplmm32 |
2007-05-09 18:51 |
System Efficiency : 0.999138 i]-g O
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Receiver Efficiency : 0.945327 ]6;AK\9TM
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Coupling Efficiency : 0.944512 (-0.2479 dB)
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Maximum Efficiency : 0.995227 )ra66E
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The system efficiency is the fraction of the energy in the source Q Bw
ZfX
beam that exits the optical system. This value is determined by cGc|n3(
the input na, entrance pupil size and position, apodization, HV9Sd JOf
transmission of the optics, and vignetting. ,?`1ve_K<
f0`'
i[
The receiver efficiency is the fraction of the transmitted energy U>+~.|'V9
that couples from the exit pupil to the receiving fiber. This h u oKr
value is determined by aberrations and the na of the receiving fiber. q-G|@6O
U&n>fXTHn
The coupling efficiency is the fraction of energy radiated Wh Zaq
by the source that couples into the receiver. This is the c9 u T`h
product of the system and receiver efficiencies. $
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e]
K=Nm
The maximum efficiency is the coupling efficiency if there 8T)zB6ng
were no aberrations. k2uiu
9xQ 8` 7
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. =[K)<5,@
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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