Work

Enhanced OFDR strain demodulation method based on optimized nearest neighbor sliding window threshold

Year: 2025

Type: article

Abstract: We propose a demodulation method based on optimized nearest neighbor sliding window thresholds, which dynamically removes noise peaks to enhance the accuracy and reliability of cross-correlation demodulation in wide-strain measurements. Compared to traditional methods, the optimized method significantly improves demodulation accuracy and robustness, achieving a high spatial resolution of 2.48 mm and a wide strain range of 10,000 µε at the end of a 17 m sensing fiber. The method is computationally efficient and maintains high spatial resolution without compromising demodulation speed. Its formidable versatility and scalability will propel the advancement of high-performance distributed fibre optic sensing technology, offering a viable solution to the critical challenge of measuring strain across a large dynamic range.

Source: Optics Express

DOI: 10.1364/oe.579415

Authors: Ling Yang, Tong Xing, Mengyuan Huo, YuDian Zhao, RongPeng Zhi, MingJiang Zhang

Institution: Taiyuan University of Technology

Language: English

Topic: Advanced Fiber Optic Sensors

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: National Natural Science Foundation of China, National Key Research and Development Program of China