| getplmm32 |
2007-05-09 18:51 |
System Efficiency : 0.999138 qdk!.A{
1 M!4hM
Q
Receiver Efficiency : 0.945327 Yl au
oVk!C a
Coupling Efficiency : 0.944512 (-0.2479 dB) (BH<\&yHE
uHquJQ4
Maximum Efficiency : 0.995227 %fl d<O
'uz o [>p
The system efficiency is the fraction of the energy in the source {@Lun6\
beam that exits the optical system. This value is determined by !Usmm8!K
the input na, entrance pupil size and position, apodization, Q3+%8zZI
transmission of the optics, and vignetting. IW n G@!
BPW.&2?<
The receiver efficiency is the fraction of the transmitted energy n>JJ Xw,,
that couples from the exit pupil to the receiving fiber. This EK>x \]O%T
value is determined by aberrations and the na of the receiving fiber. FiRe b3zR
]+pE1- p\
The coupling efficiency is the fraction of energy radiated =4x6v<
by the source that couples into the receiver. This is the :twp95{R1
product of the system and receiver efficiencies. ?-& k?I
\ l0!s i
The maximum efficiency is the coupling efficiency if there }duqX R
were no aberrations. +-t&li%F
of7'? ]w
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. BuM #& ]s
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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