Figure 6
Optical spectra of the 15 sub-carrier super-channel.
(a) Spectrum at the output of the OCG. The red dotted box illustrates the 15 sub-carriers used for this characterisation. (b) Spectrum of the modulated “Odd” carriers, at the output of the top IQ-modulator. (c) Spectrum of the modulated “Even” carriers, at the output of the bottom IQ-modulator. (d) Spectrum of the entire super-channel, at the output of the polarisation multiplexing stage.
