We proposed a novel scheme for realizing Kramers–Kronig detection by utilizing the narrow-band and high-gain characteristic of stimulated Brillouin scattering. At the receiver, the weak virtual carrier located at the edge of the signal spectrum is Brillouin amplified by the output of a slave laser, which is injection locked by a weak pump seed provided by the transmitter. More than a 2.7-dB optical signal-to-noise ratio sensitivity improvement is experimentally obtained compared with the traditional virtual carrier assisted scheme after an 80-km transmission. The effective number of bits requirement and the performance gain in the nonlinear transmission are both analyzed by the simulation.
© 2018 Optical Society of AmericaFull Article | PDF Article
CorrectionsQ. Zhang, B. Zheng, and C. Shu, "Kramers–Kronig detection with Brillouin-amplified virtual carrier: publisher’s note," Opt. Lett. 43, 1930-1930 (2018)
27 March 2018: A typographical correction was made to the title.
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