Optical fiber communication 72021/2/19 每一束透射波比前一束在相径上延迟Φ=k2=4Tn/A0=4Tnf/c 而振幅减小须乘以因子r1r2。令 则:b=exP(=/ At1=A12exp(一j中) At2=At t, exp(- rri exp(一少小)t2=A1h At= At,h1-7 Copyright Wang Yan 2021/2/19 Optical fiber communications 每一束透射波比前一束在相径上延迟Φ＝k2l=4πnl/λ0=4πnlf/c 而振幅减小须乘以因子r1 r2 。令 exp( ) h = r1 r2 − j 则： exp( ) At1 = A1 t 1 t 2 − j At2 = A1 t 1 t 2 exp(− j)r2 r1 exp(− j)t 2 = At1 h =  2 At3 At1 h