| getplmm32 |
2007-05-09 18:51 |
System Efficiency : 0.999138 2f0mr?l)N
9vP#/ -g
Receiver Efficiency : 0.945327 ?3% r:g4
+|--}iE5n
Coupling Efficiency : 0.944512 (-0.2479 dB) +G6 G e;
[Z2{S-)UM
Maximum Efficiency : 0.995227 ?kK3%uJy&
u +O"c
The system efficiency is the fraction of the energy in the source xn>N/+,
beam that exits the optical system. This value is determined by TBIr^n>Z<k
the input na, entrance pupil size and position, apodization, Xf[;^?] X
transmission of the optics, and vignetting. 'jXJ !GFw
`oTV)J'~
The receiver efficiency is the fraction of the transmitted energy -Q/wW4dE=
that couples from the exit pupil to the receiving fiber. This J/QqwoR
value is determined by aberrations and the na of the receiving fiber. dlA0&;}z
kxR!hA8wv4
The coupling efficiency is the fraction of energy radiated *&tTiv{^
by the source that couples into the receiver. This is the vQG v4
product of the system and receiver efficiencies. 4:Oq(e_(
M~h.M PI
The maximum efficiency is the coupling efficiency if there }( ! rB#bf
were no aberrations. /x)i}M)
8 ;"9A
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. s)?GscPG!
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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