140-Gb/s PS-256-QAM Transmission in an OFDM System Using Kramers-Kronig Detection

140-Gb/s PS-256-QAM Transmission in an OFDM System Using Kramers-Kronig Detection

We experimentally demonstrate an orthogonal frequency-division multiplexing (OFDM) system with direct detection. Adopting Kramers-Kronig (KK) detection and probabilistic shaping (PS) technology, 140-Gb/s 256-QAM signal can be successfully transmitted over 25-km standard single-mode fiber (SSMF), whi...

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Veröffentlicht in:IEEE photonics technology letters 2019-09, Vol.31 (17), p.1405-1408
Hauptverfasser: Wang, Kaihui, Wei, Yiran, Zhao, Mingming, Zhou, Wen, Yu, Jianjun
Format: Artikel
Sprache:eng
Schlagworte:
Amplitude modulation
Communication channels
Frequency division multiplexing
Kramers–Kronig detection
OFDM
Optical attenuators
Optical fibers
Optical modulation
Orthogonal Frequency Division Multiplexing
probabilistic shaping
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Zusammenfassung:We experimentally demonstrate an orthogonal frequency-division multiplexing (OFDM) system with direct detection. Adopting Kramers-Kronig (KK) detection and probabilistic shaping (PS) technology, 140-Gb/s 256-QAM signal can be successfully transmitted over 25-km standard single-mode fiber (SSMF), which satisfies the normalized generalized mutual information (NGMI) threshold of 0.865. Based on the experimental results, the performance of single-side band (SSB) OFDM signal can be effectively improved with the aid of KK detection and can be further enhanced by the deployed PS method.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2019.2929524