| getplmm32 |
2007-05-09 18:51 |
System Efficiency : 0.999138 5WtQwN~
i?&4SG+2~K
Receiver Efficiency : 0.945327 >q}
!>k$B
FOlA* U4U
Coupling Efficiency : 0.944512 (-0.2479 dB) ;*<{*6;=?
qb>|n 1F_
Maximum Efficiency : 0.995227 *<|~ =*Ddf
FthXFxwx$
The system efficiency is the fraction of the energy in the source q >D4ma^
beam that exits the optical system. This value is determined by $ly#zQR
the input na, entrance pupil size and position, apodization, BCa90
transmission of the optics, and vignetting. 34+)-\ xt:
m-Z'K_ oQ
The receiver efficiency is the fraction of the transmitted energy +7lRP)1R
that couples from the exit pupil to the receiving fiber. This +[ZMrTW!0C
value is determined by aberrations and the na of the receiving fiber. qJbhPY8Ak
X d19GP!
The coupling efficiency is the fraction of energy radiated #um1?V
by the source that couples into the receiver. This is the -Z/6;2Q
product of the system and receiver efficiencies. *1 ID`o
[#,X$O>
The maximum efficiency is the coupling efficiency if there f<s'prF
were no aberrations. X,iuz/Q
EE{#S
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. R.T?ZF
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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