How can BaySpec's OCPMs discern different modulation schemes (10/40/100, etc.)?

Various modulation schemes can be discerned by BaySpec's OCPMs. It is complished by a single module, which will work with single or dual modulations. The principle function is based on the first optics principle, as any laser beam would work in such a way that when the modulation speed is higher, the spectrum of that wavelength would be broadened - a phenomena called spectral linewidth broadening.

As, say a 10/40G modulation changes, the device can judge the spectral broadening using that info to derive and identify different signals. More.

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