Figure 6 | Scientific Reports

Figure 6

From: Increasing the information rates of optical communications via coded modulation: a study of transceiver performance

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.

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