doi: 10.1364/OE.24.000853.
Coherent Φ-OTDR based on I/Q demodulation and homodyne detection
- PMID:26832468
- DOI: 10.1364/OE.24.000853
Item in Clipboard
Coherent Φ-OTDR based on I/Q demodulation and homodyne detection
Zinan Wang et al. Opt Express..
Free article Display options
Format
Display options
Format
Abstract
We demonstrate a novel distributed acoustic sensing (DAS) system based on phase-sensitive optical time-domain reflectometry (Φ-OTDR). Both the phase and the amplitude of the Rayleigh scattering (RS) light can be demodulated in real-time. The technique is based on I/Q demodulation and homodyne detection using a 90° optical hybrid. The theoretical analysis is given, and as a proof of the concept, the dynamic strain sensing is experimentally demonstrated, with a sensing range of 12.566 km and a spatial resolution of 10 m.
Similar articles
- Low Computational Cost Distributed Acoustic Sensing Using Analog I/Q Demodulation.Jiang F, Lu Z, Cai F, Li H, Zhang Z, Zhang Y, Zhang X.Jiang F, et al.Sensors (Basel). 2019 Aug 30;19(17):3753. doi: 10.3390/s19173753.Sensors (Basel). 2019.PMID:31480277Free PMC article.
- The Impact of Rayleigh Scattering in UWFBG Array-Based Φ-OTDR and Its Suppression Method.Wang F, Yu Y, Hong R, Tian R, Zhang Y, Zhang X.Wang F, et al.Sensors (Basel). 2023 May 25;23(11):5063. doi: 10.3390/s23115063.Sensors (Basel). 2023.PMID:37299790Free PMC article.
- Distributed dynamic strain sensing in coherent Φ-OTDR with a pulse conversion algorithm.Qian H, Luo B, He H, Zhou Y, Zou X, Pan W, Yan L.Qian H, et al.Opt Lett. 2021 Apr 1;46(7):1668-1671. doi: 10.1364/OL.420047.Opt Lett. 2021.PMID:33793514
- Recent Progress in Distributed Fiber Acoustic Sensing with Φ-OTDR.Wang Z, Lu B, Ye Q, Cai H.Wang Z, et al.Sensors (Basel). 2020 Nov 18;20(22):6594. doi: 10.3390/s20226594.Sensors (Basel). 2020.PMID:33218051Free PMC article.Review.
- Distributed Acoustic Sensing Using Chirped-Pulse Phase-Sensitive OTDR Technology.R Fernández-Ruiz M, Costa L, F Martins H.R Fernández-Ruiz M, et al.Sensors (Basel). 2019 Oct 9;19(20):4368. doi: 10.3390/s19204368.Sensors (Basel). 2019.PMID:31601056Free PMC article.Review.
Cited by
- Low Computational Cost Distributed Acoustic Sensing Using Analog I/Q Demodulation.Jiang F, Lu Z, Cai F, Li H, Zhang Z, Zhang Y, Zhang X.Jiang F, et al.Sensors (Basel). 2019 Aug 30;19(17):3753. doi: 10.3390/s19173753.Sensors (Basel). 2019.PMID:31480277Free PMC article.
- Hybrid Distributed Optical Fiber Sensor for the Multi-Parameter Measurements.Zhou X, Wang F, Yang C, Zhang Z, Zhang Y, Zhang X.Zhou X, et al.Sensors (Basel). 2023 Aug 11;23(16):7116. doi: 10.3390/s23167116.Sensors (Basel). 2023.PMID:37631654Free PMC article.Review.
- 3D Printing Technique-Improved Phase-Sensitive OTDR for Breakdown Discharge Detection of Gas-Insulated Switchgear.Chen Z, Zhang L, Liu H, Peng P, Liu Z, Shen S, Chen N, Zheng S, Li J, Pang F.Chen Z, et al.Sensors (Basel). 2020 Feb 14;20(4):1045. doi: 10.3390/s20041045.Sensors (Basel). 2020.PMID:32075177Free PMC article.
- Envelope Extraction for Vibration Locating in Coherent Φ-OTDR.Zan W, Wang Y, Liu X, Wang P, Jin B.Zan W, et al.Sensors (Basel). 2022 Feb 4;22(3):1197. doi: 10.3390/s22031197.Sensors (Basel). 2022.PMID:35161942Free PMC article.
- Eliminating Phase Drift for Distributed Optical Fiber Acoustic Sensing System with Empirical Mode Decomposition.Lv Y, Wang P, Wang Y, Liu X, Bai Q, Li P, Zhang H, Gao Y, Jin B.Lv Y, et al.Sensors (Basel). 2019 Dec 6;19(24):5392. doi: 10.3390/s19245392.Sensors (Basel). 2019.PMID:31817736Free PMC article.
Publication types
LinkOut - more resources
Full Text Sources
Other Literature Sources