System Efficiency : 0.999138 ^yBx.GrQc
d)q{s(<;
Receiver Efficiency : 0.945327 (+T|B E3*#
bD49$N?>
Coupling Efficiency : 0.944512 (-0.2479 dB) Y}F+4
( \SxG\`
Maximum Efficiency : 0.995227 o<%Sr*
Ak|j J
The system efficiency is the fraction of the energy in the source 5)EnOT"'
beam that exits the optical system. This value is determined by ~Ug a=&
the input na, entrance pupil size and position, apodization, ;i Ud3 '*
transmission of the optics, and vignetting. c)lMi}/
w' U;b
The receiver efficiency is the fraction of the transmitted energy = "Dmfy7
that couples from the exit pupil to the receiving fiber. This -KO E2f
value is determined by aberrations and the na of the receiving fiber. 9I.="b=J)
E# ti
The coupling efficiency is the fraction of energy radiated |-Y,:sY:
by the source that couples into the receiver. This is the Q2iu}~
product of the system and receiver efficiencies. M|76,2u
G?YKm1:w
The maximum efficiency is the coupling efficiency if there D(L%fK` +
were no aberrations. 3<?(1kSo>>
.!=2#<
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. LD#]"k
耦合效率的计算有一个积分过程,还是比较复杂的.
