Please use this identifier to cite or link to this item:
Title: M-OTDR sensing system based on 3D encoded microstructures
Authors: Sun, Qizhen
Ai, Fan
Liu, Deming
Cheng, Jianwei
Luo, Hongbo
Peng, Kuan
Luo, Yiyang
Yan, Zhijun
Shum, Perry Ping
Keywords: Optical sensors
Fibre optics and optical communications
Issue Date: 2017
Source: Sun, Q., Ai, F., Liu, D., Cheng, J., Luo, H., Peng, K., et al. (2017). M-OTDR sensing system based on 3D encoded microstructures. Scientific Reports, 7, 41137-.
Series/Report no.: Scientific Reports
Abstract: In this work, a quasi-distributed sensing scheme named as microstructured OTDR (M-OTDR) by introducing ultra-weak microstructures along the fiber is proposed. Owing to its relative higher reflectivity compared with the backscattered coefficient in fiber and three dimensional (3D) i.e. wavelength/frequency/time encoded property, the M-OTDR system exhibits the superiorities of high signal to noise ratio (SNR), high spatial resolution of millimeter level and high multiplexing capacity up to several ten thousands theoretically. A proof-of-concept system consisting of 64 sensing units is constructed to demonstrate the feasibility and sensing performance. With the help of the demodulation method based on 3D analysis and spectrum reconstruction of the signal light, quasi-distributed temperature sensing with a spatial resolution of 20 cm as well as a measurement resolution of 0.1 °C is realized.
ISSN: 2045-2322
DOI: 10.1038/srep41137
Schools: School of Electrical and Electronic Engineering 
Rights: © 2017 The Author(s) (Nature Publishing Group). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

Files in This Item:
File Description SizeFormat 
M-OTDR sensing system based on 3D encoded microstructures.pdf1.11 MBAdobe PDFThumbnail

Citations 20

Updated on Sep 19, 2023

Web of ScienceTM
Citations 20

Updated on Sep 21, 2023

Page view(s) 50

Updated on Sep 25, 2023

Download(s) 20

Updated on Sep 25, 2023

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.