| getplmm32 |
2007-05-09 18:51 |
System Efficiency : 0.999138 7n3x19T
?PU(<A+
Receiver Efficiency : 0.945327 `^4>^
=S7C(;=4
Coupling Efficiency : 0.944512 (-0.2479 dB) J&0wl]w|O%
8"I5v(TV
Maximum Efficiency : 0.995227 R~mMGz
RBp(dKxM$w
The system efficiency is the fraction of the energy in the source o dQ&0 d
beam that exits the optical system. This value is determined by 9!/1F !
the input na, entrance pupil size and position, apodization, W*WH .1&
transmission of the optics, and vignetting. @'| 6lG
j9
&AMg
The receiver efficiency is the fraction of the transmitted energy mjr{L{H=?+
that couples from the exit pupil to the receiving fiber. This ;>x1)|n5
value is determined by aberrations and the na of the receiving fiber. BtBt>r(*
TKs@?Q,J
The coupling efficiency is the fraction of energy radiated j$ i8@]
by the source that couples into the receiver. This is the \#*;H|U.x
product of the system and receiver efficiencies. >j~70 ?
If I$
The maximum efficiency is the coupling efficiency if there PI<s5bns
{
were no aberrations. VDI S`E
8X~vJ^X9@y
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. a\j\eMC
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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