Hi every one.
What I understand from the discussion is that while working with WDM systems we can use a WDM analyser as aabid suggested to check the SNR values.But for any system in general we can use an electrical analyser for calculating SNR.
But wht if we want to calculate the Optical signal to noise ratio for any system..WDM analyser does give the value of OSNR but cannot be used in a system where wavelength division multiplexing is not used.So is there any component which can be used to calculate OSNR for any system design nt just being specific to WDM systems.
Thanks and Regards