| getplmm32 |
2007-05-09 18:51 |
System Efficiency : 0.999138 aW_oD[l
+0wT!DZW\=
Receiver Efficiency : 0.945327 Lo .rvt
`mfq
2bVc
Coupling Efficiency : 0.944512 (-0.2479 dB) >4` dy
T=f|,sK +7
Maximum Efficiency : 0.995227 Ga>uFb}W~
= < @2#E)
The system efficiency is the fraction of the energy in the source -7H^n#]
beam that exits the optical system. This value is determined by G6P)C##ibn
the input na, entrance pupil size and position, apodization, @oP_;G
transmission of the optics, and vignetting. a 3Slx sWW
UB`ToE|Ii
The receiver efficiency is the fraction of the transmitted energy eYUr-rN+)z
that couples from the exit pupil to the receiving fiber. This "^j>tii
value is determined by aberrations and the na of the receiving fiber. 6DIZ @ oi
f>o,N{|
The coupling efficiency is the fraction of energy radiated #hfuH=&oh
by the source that couples into the receiver. This is the $q?$]k|M`
product of the system and receiver efficiencies. ^jB8Q
Psur a$:
The maximum efficiency is the coupling efficiency if there uP3_FX:
e
were no aberrations. P;[OWSR[d
u6V/JI}g
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. eK_*2=;XRW
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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