| getplmm32 |
2007-05-09 18:51 |
System Efficiency : 0.999138 8tM40/U$
2U-F}Z
Receiver Efficiency : 0.945327 52$7vYMto
,h'q}5
Coupling Efficiency : 0.944512 (-0.2479 dB) R~$W
}?pY ~f
Maximum Efficiency : 0.995227 k{op ,n#
2sJj -3J
The system efficiency is the fraction of the energy in the source AiT&:'<UT
beam that exits the optical system. This value is determined by |uT&`0T'e`
the input na, entrance pupil size and position, apodization, D|u! KH
transmission of the optics, and vignetting. \k{UqU+s
s :j "8ZH
The receiver efficiency is the fraction of the transmitted energy R i@`sc{n
that couples from the exit pupil to the receiving fiber. This Cc?BJ
value is determined by aberrations and the na of the receiving fiber. i>n.r_!E
QP f#y7_@u
The coupling efficiency is the fraction of energy radiated X`d d"8%
by the source that couples into the receiver. This is the \(PC#H%
product of the system and receiver efficiencies. !vU$^>zo~
?d*0-mhQ,
The maximum efficiency is the coupling efficiency if there BTXS+mvl
were no aberrations. m]yt6b4
.:KZ8'g3}
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. l^s\^b=W
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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