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FBG and UWFBG Sensing Technology

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Optical Sensors".

Deadline for manuscript submissions: 31 October 2025 | Viewed by 578

Special Issue Editors

Key Laboratory of Intelligent Optical Sensing and Manipulation, Ministry of Education, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210023, China
Interests: optical fiber sensors; distributed optical fiber sensing based on Brillouin, Rayleigh and Raman scattering; intelligent signal processing; integrated photonics
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Guest Editor
School of Information Engineering, Wuhan University of Technology, Wuhan 430070, China
Interests: optical fiber material and its preparation technology; optical fiber sensing signal demodulation technology; intelligent information processing technology

Special Issue Information

Dear Colleagues, 

FBG sensing technology has attracted increased attention due to its excellent performance, broad applicability, and significant value in application. In recent years, this technology has continued to thrive and has developed rapidly. Many innovative technologies have been proposed for FBG and ultra-wake FBG (UWFBG) sensors. In addition, FBG’s application method has become more diverse, and its application field has become more extensive. This Special Issue will focus on FBG and UWFBG sensing technology, including sensing principles, key components, and sensing applications.

Dr. Feng Wang
Prof. Dr. Zhengying Li
Guest Editors

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Keywords

  • fiber bragg grating
  • ultra-weak FBG
  • sensing principle
  • structral health monitoring
  • novel applications

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Published Papers (1 paper)

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Research

11 pages, 1085 KiB  
Article
A Passive Ladder-Shaped FBG Sensor Network with Fault Detection Using Time- and Wavelength-Division Multiplexing
by Keiji Kuroda
Sensors 2025, 25(14), 4261; https://doi.org/10.3390/s25144261 - 9 Jul 2025
Viewed by 367
Abstract
This article reports on the interrogation of fiber Bragg grating (FBG)-based sensors that have been multiplexed in a ladder topology. In each line of this topology, FBGs with different wavelengths are connected. In addition, delay fibers have been inserted between each line to [...] Read more.
This article reports on the interrogation of fiber Bragg grating (FBG)-based sensors that have been multiplexed in a ladder topology. In each line of this topology, FBGs with different wavelengths are connected. In addition, delay fibers have been inserted between each line to enable reflections from different lines to be distinguished. Seven FBGs are interrogated simultaneously by applying time- and wavelength-division multiplexing techniques. To improve the signal-to-noise ratio of the weak reflected signals, the heterodyne detection technique is applied. Through the simulation of three different failure cases, we evaluate the fault detection capability of our method. Full article
(This article belongs to the Special Issue FBG and UWFBG Sensing Technology)
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