Optical fiber communication 72021/2/19 Gaussian脉冲f()=exp(-2/2x2)(=r P 1/2, P(t) 2 1/e P(0) P(tat P(tdt d-001 - 7 Copyright Wang Yan 2021/2/19 Optical fiber communications eh  Gaussian 脉冲： ( ) exp( / 2 ) 2 2 0 P t = P − t    = − = ) 21 ( ) exp( P P0 t   = me PP t ，， 11 2 (0) ( ) t h  P0 P 2P0 eP0 2 1 2 2 ( ) ( ) ( ) ( )     = −    −− − − P t dt t P t dt P t dt t P t d m   0 t e 