Fig. 5.10 The equivalent structure representing the heterodyning with a delay in OEO MZ (a), in
which the laser (L) is the source of the phase noise. Optical oscillations pass through different
optical channel of the Mach–Zehnder modulator, then they are delayed in the optical fiber by the PD
time and pass through the switch Sw. Optical spectral densities of input optical filter (b), of the
output optical filter (c); RF spectral densities at the PD output (d), in the MZ input (e)
5.5 Correlator’s Mathematical Model in OEO MZ
259
which the laser (L) is the source of the phase noise. Optical oscillations pass through different
optical channel of the Mach–Zehnder modulator, then they are delayed in the optical fiber by the PD
time and pass through the switch Sw. Optical spectral densities of input optical filter (b), of the
output optical filter (c); RF spectral densities at the PD output (d), in the MZ input (e)
5.5 Correlator’s Mathematical Model in OEO MZ
259