getplmm32 |
2007-05-09 18:51 |
System Efficiency : 0.999138 e`5:46k| kjSzuqB Receiver Efficiency : 0.945327 mmMiA@0 sr~VvciIy Coupling Efficiency : 0.944512 (-0.2479 dB) 9mpQusM _sHeB7K Maximum Efficiency : 0.995227 $A(3-n5= c{T)31ldW The system efficiency is the fraction of the energy in the source dE(d'*+a beam that exits the optical system. This value is determined by {4%ddJn[.) the input na, entrance pupil size and position, apodization, "`w*-O transmission of the optics, and vignetting. >q&e.-qL 9YBlMf`KEf The receiver efficiency is the fraction of the transmitted energy cL"Ral-qB that couples from the exit pupil to the receiving fiber. This paxZlA
o value is determined by aberrations and the na of the receiving fiber. _ CzAv% T$V8n_; The coupling efficiency is the fraction of energy radiated ![Vrbe P by the source that couples into the receiver. This is the tV7{j'If product of the system and receiver efficiencies. Pfm B{ V{rQ@7SE The maximum efficiency is the coupling efficiency if there 5)w;0{X!P were no aberrations. ?X7nM) ~"h V-3U 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. V.o*`V 耦合效率的计算有一个积分过程,还是比较复杂的.
|
|