| getplmm32 |
2007-05-09 18:51 |
System Efficiency : 0.999138 KPKby?qQ^
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Receiver Efficiency : 0.945327 @Yy=HV
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Coupling Efficiency : 0.944512 (-0.2479 dB) gm4-w 9M[p
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Maximum Efficiency : 0.995227 )\p@E3Uxf
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The system efficiency is the fraction of the energy in the source D,]m7 yFT
beam that exits the optical system. This value is determined by QiY7m< 3
the input na, entrance pupil size and position, apodization, 4ajBMgD]KG
transmission of the optics, and vignetting. <PXA`]x~
s|d L.@0,L
The receiver efficiency is the fraction of the transmitted energy V.;0F%zks5
that couples from the exit pupil to the receiving fiber. This , X+0 71.(
value is determined by aberrations and the na of the receiving fiber. -K+gr sb
g
UR Y%+u
The coupling efficiency is the fraction of energy radiated <[b\V+M
by the source that couples into the receiver. This is the HnZr RHT 0
product of the system and receiver efficiencies. hnL( ~
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The maximum efficiency is the coupling efficiency if there #kk_iS>8
were no aberrations. h|_G2p^J+"
?^0#:QevC
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. lYU_uFOs\
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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