Fig. 2: Measured optical spectra and constellation diagrams in the PSA-based bidirectional transmission system. | Communications Engineering

Fig. 2: Measured optical spectra and constellation diagrams in the PSA-based bidirectional transmission system.

From: High-capacity phase-sensitively amplified transmission in a field-deployed fiber cable

Fig. 2

a Schematic of the PSA-based same-wavelength bidirectional transmission system. b Experimental optical spectra of the transmitter output, OPC output, transmission link output, and PSA output, corresponding to points I~IV in a, respectively. c Constellation diagrams of the signal at 192.4 THz measured at the transmitter out, OPC output, transmission link output, and PSA output, corresponding to points I~IV in a, respectively.

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