Authors
Bing Han, Guofeng Yan, Peng Li, Guoqun Chen, Jun Chu, Lei Shen, Yuan Gao, Ruichun Wang, Jie Luo, Jun Liu, Jian Wang
Published in
Optics express. Volume 34. Issue 15. Pages 28380-28390. Jul 27, 2026.
Abstract
Anti-resonant hollow-core fiber (AR-HCF) is a novel transmission medium that significantly mitigates the capacity limitation caused by fiber nonlinear effects. This provides what we believe to be a new technical approach for high-capacity and low-latency optical networks. In this paper, we evaluate the transmission performance of AR-HCF in broadband and long-haul dense wavelength-division multiplexing (DWDM) systems. Based on AR-HCFs with a single span of 100 km, 20-Gbaud dual-polarization quadrature phase-shift keying (DP-QPSK) signals are transmitted over 2,500 km (25 loops) across 367 DWDM channels in the C- and L-band, achieving a record capacity-distance product of 73.4 Pbit/s·km (367 × 80-Gbit/s × 2,500-km). Experimental results indicate that the transmission can reach a maximum distance of 3,700 km for some channels over the C-band, while all channels exceed 2,600 km. Without employing wavelength-selective switches (WSSs) to suppress out-of-band noise, the L-band exhibits an approximately 1-dB optical signal-to-noise ratio (OSNR) penalty compared to the C-band after 2,500-km transmission. Bit-error rates (BERs) for the 367 DWDM channels are below the 15% hard-decision forward error correction (HD-FEC) overhead threshold. These results provide a systematic experimental evaluation of DWDM transmission over AR-HCFs, proving great potential as a powerful tool in applications such as data centers, 6G optical networks, and low-latency computing clusters.
PMID:
42596467
Bibliographic data and abstract were imported from PubMed on 14 Aug 2026.
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