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We have experimentally demonstrated C-band 112-Gb/s (4×28-Gb/s) PAM-4 transmission over 160-km SMF without inline amplifier based on 10G-class DML and photodiode. Delay interferometer and Volterra filtering are applied to compensate both linear and nonlinear distortions.
This paper proposes a manipulated rotating binary phase shift keying (MR-BPSK) technique, which can use conventional constant modulus algorithm (CMA) to update the adaptive filter coefficient. This technique inherits the robust nonlinear tolerance of conventional BPSK, which is proved in 420/440km real time unrepeatered transmission experiment.
We propose a novel guard-band-shared direct detection scheme to improve the receiver spectrum efficiency. A 100-Gb/s DDO-OFDM/OQAM signal transmission has been successfully demonstrated over 80-km SSMF using a single photodiode within 50-GHz optical grid.
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