Optical fiber communication 02021/2/19 P=P+PML=(1+X EoE cos(oot-Bot 3 4°02)E2|Ecos(mb-A0) =(1+x(3)+3y(3)E2)Ecos(at-B) 41 -10 Copyright Wang Yan 2021/2/19 Optical fiber communications cos( ) 43 (1 ) cos( ) 0 0 (3) 2 0 0 0 0 (1) E E t t P P P E t t NL          −   + = + = + − ) cos( ) 43 (1 0 0 0 ( 3 ) ( 3 ) 2 = +  +  E  E  t −  t