Photonics Research, Volume. 13, Issue 6, 1611(2025)
Co-wavelength-channel integration of ultra-low-frequency distributed acoustic sensing and high-capacity communication
Figures & Tables(11)
Fig. 2. Relationship between the number of diversity channels and SNR for CP Φ-OTDR.
Fig. 3. (a) Experimental setup. (b) WDM signal spectrum at core-4. (c) Cross section of fabricated seven-core-fiber.
Fig. 4. (a) Measured inter-core crosstalk at 1550 nm. (b) Measured loss and CD at 1550 nm.
Fig. 5. Impact of PI bandwidth on (a) communication and (b) sensing performance.
Fig. 6. (a) Overall BER performance. (b) Time-distance mapping of the vibration induced by PZT around 38.7 km. (c) Measured acoustic wave and (d) its ASD.
Fig. 7. (a) Measured acoustic wave and (b) its ASD on the other six cores in the presence of 0.1 Hz vibration.
Fig. 8. (a) Measured acoustic wave and (b) its ASD with the 10 Hz vibration.
Table 1. Recent Progress in ISAC in an Optical Fiber
View tableView in ArticleTable 1. Recent Progress in ISAC in an Optical Fiber
Ref. Multiplexing Solution Capacity (Tb/s) Reach (km) Vibration Detection Frequency (Hz) [ 8 ]SDM 200.88 16.5 / [ 11 ]Co-frequency-band 0.056 24.5 800 [ 19 ]MDM 0.0042 1 500 [ 9 ]WDM 36.8 110 / [ 10 ]WDM 10 1007 16 [ 15 ]Co-wavelength-channel 0.2 10 500 This work Co-wavelength-channel 241.85 38 0.1
Table 2. Simulation Parameters for Sensing
View tableView in ArticleTable 2. Simulation Parameters for Sensing
Reach Bandwidth Chirped Pulse Width Pulse Repetition Period Vibration Frequency 800 m 300 MHz 50 ns 10 μs 10 kHz
Table 3. Key Parameters of the Experiment
View tableView in ArticleTable 3. Key Parameters of the Experiment
Communication Modulation Aggregate Baud Rate MCF Length Number of Wavelength Channels DP-16QAM DSM with 4 subcarriers 36 GBaud with PI 38 km 45 GBaud without PI Sensing Chirped Pulse Width Repetition Rate Peak Power Bandwidth 200 ns 1 kHz 120 mW 500 MHz
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Long Gu, Chaocheng Liu, Meng Xiang, Pengbai Xu, Hailin Yang, Wei Sun, Jun Yang, Songnian Fu, Yuncai Wang, Yuwen Qin, "Co-wavelength-channel integration of ultra-low-frequency distributed acoustic sensing and high-capacity communication," Photonics Res. 13, 1611 (2025)
Paper Information
Category: Fiber Optics and Optical Communications
Received: Dec. 16, 2024
Accepted: Mar. 31, 2025
Published Online: May. 26, 2025
The Author Email: Meng Xiang (meng.xiang@gdut.edu.cn)
CSTR:32188.14.PRJ.551958
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