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Cycle Slip Compensation with Polarization Block Coding for Coherent Optical Transmission: Two-dimensional phases constellation corresponds to a slip state

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4 Author(s)
Tsuyoshi Yoshida ; Opt. Commun. Technol. Dept., Inf. Technol. R&D Center, Mitsubishi Electr. Corp., Kamakura, Japan ; Takashi Sugihara ; Kazuyuki Ishida ; Takashi Mizuochi

Cycle slip (CS) compensation is a critical technique for nondifferential coded coherent optical transmission. By monitoring the sparse, asymmetric polarization block-coded symbol mapped signal phases of two orthogonal polarizations, the CS can be estimated from a relatively short stretch of symbols (unit). Simulation shows that the polarization block coding-based method compensates CS and improves the Q-factor by 1 dB or more compared to differential coding.

Published in:

IEEE Signal Processing Magazine  (Volume:31 ,  Issue: 2 )