Hello everyone , in my WDM design i am getting OSNR values as high as 95 dB or more at output . even the ouput of optical spectrum analzyer shows Noise in different band from signal which is possibly whz OSNR is high. but is it feasible ? if no then whz such high OSNR values exist at output even before amplification OSNR is near 66 dB at input.
pls if anzbdz could suggest me something