Extended-reach transmission of single-wavelength 112-Gbps PAM4 channel enabled by MLSE for intra data center applications

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Universidade Federal de Minas Gerais

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We experimentally demonstrate single-wavelength 56-GBd PAM4 transmission at 1550 nm, without chromatic dispersion compensation in the optical domain, focusing on short-reach intra data center applications. We obtained an extended-reach of 33% employing low-complexity digital equalizers and maximum likelihood sequence estimation, achieving error-free operation up to 4 km, considering 7% FEC-overhead.

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Processamento de sinais - Técnicas digitais, Eletrônica digital

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Maximum likelihood estimation , Adaptive optics , Complexity theory , Optical signal processing , Optical modulation , Optical receivers, chromatic dispersion , data center interconnect , maximum likelihood sequence estimation , pulse amplitude modulation, Data Center , Dispersion Compensation , Direct Detection , Bitrate , Digital Signal Processing , Optical Amplifier , Forward Error Correction , Receiver Side , Most Significant Bit , Least Mean Square , Line Rate , Inter-symbol Interference , Quadrature Amplitude Modulation , Symbol Rate , Standard Single-mode Fiber , Fiber Transmission , Mach-Zehnder Modulator , Variable Optical Attenuator , Memory Length , Vertical-cavity Surface-emitting Lasers , Optimal Decoding

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https://ieeexplore.ieee.org/document/8121059

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