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发帖数: 536 | 1 Pc=alpha*Pa+(1-alpha)*Pb
Pd=alpha*Pb+(1-alpha)*Pa
If your coupler is a directional one and is a good directional one,
then almost no light come out at A/B if you input at C/D.
But if it is not directional, then Pa,Pb=f(Pc, Pd) have almost same
function as the above. |
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