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5 December 2024 Demonstration of 640 km UDWDM transmission with low-complexity real-time coherent transceivers
Chenghao Chay, Yizhou Wang, Zipeng Liang, Shenmao Zhang, Xiaoxiao Dai, Qi Yang, Deming Liu
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Proceedings Volume 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024); 134183X (2024) https://doi.org/10.1117/12.3049143
Event: 15th International Conference on Information Optics and Photonics (CIOP2024), 2024, Xi’an, China
Abstract
With the rise of 5G, big data, and cloud computing, optical communication networks are under immense pressure due to exponential IP traffic growth. To meet the needs of these services and enhance the flexibility of bandwidth management in optical networks, ultra-dense wavelength division multiplexing (UDWDM) systems have been widely studied. However, in practical deployments, existing electrical switching methods involve multiple optoelectronic conversions, leading to high power consumption across the entire network. Furthermore, UDWDM systems necessitate communication transceivers with enhanced sensitivity for long-distance transmission, which has prompted the adoption of digital coherent optical communication technology. In this paper, we demonstrated a real-time UDWDM system with optical switches over 640-km fiber using low-complexity coherent transceivers. 10 x 10 Gb/s DP-QPSK signals spaced at 12.5 GHz are transmitted over a 640-km single-mode fiber. The receiver sensitivity achieved -47 dBm, under the BER threshold of 7% overhead hard-decision Forward Error Correction (HD-FEC). Furthermore, we demonstrated the feasibility of dynamic wavelength management and allocation through wavelength selective switching in this system, which verified the potential for flexible optical switching in UDWDM systems.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Chenghao Chay, Yizhou Wang, Zipeng Liang, Shenmao Zhang, Xiaoxiao Dai, Qi Yang, and Deming Liu "Demonstration of 640 km UDWDM transmission with low-complexity real-time coherent transceivers", Proc. SPIE 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024), 134183X (5 December 2024); https://doi.org/10.1117/12.3049143
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KEYWORDS
Optical switching
Optical transmission
Transceivers
Transmitters
Digital signal processing
Optical coherence
Receivers
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