What is the complex spectral analysis principle used in the AP2440A series?
This method is based upon a spectral analysis of the optical field, and allows one to extract the amplitude and the phase of each frequency component (whereas classic spectrum analyzers measure the power spectral density, providing only the amplitude). Knowing the amplitude and the phase of each spectral component, the temporal variations of the amplitude and the phase can be calculated by the Fourier transform, providing the intensity and the chirp as a function of time…
