Apr 27, 2026
Distributed fiber-optic vibration and temperature sensor are very important for many applications. However, existing multi-parameter sensing systems are usually based on a hybrid
May 20, 2026
In the field of the Internet of Things, sensors with large-scale perception ability are urgently needed for the scenarios, such as structure health monitoring, vehicle tracking, and so on. Quasi-distributed
Apr 22, 2026
In this review work, an overview on the recent advances of FBG arrays is conducted. Firstly, the fabrication methods of FBG array are reviewed,
Feb 27, 2026
Fiber Bragg grating (FBG) array is a powerful technique for quasi-distributed sensing along the entire length of sensing fiber with fast response and
Dec 17, 2025
Quasi-distributed sensors enhance coverage by multiplexing multiple FBGs through time-division or wavelength- division schemes, enabling efficient long-distance monitoring.
Jul 10, 2026
This paper demonstrates a high performance quasi-distributed fiber-optic sensor based on a communication-grade semiconductor laser other than a narrow linewidth fiber laser.
Feb 04, 2026
We demonstrate a quasi-distributed acoustic sensing system with low coherence optical frequency domain reflectometry and weak reflectors array. With broadband light source and simple structure,
Sep 24, 2025
The versatility of the fiber sensors to obtain reliable and precise measurements while maintaining compact size and reduced costs has no comparison in sensing technology. However,
Oct 17, 2025
He, “Large-scale multiplexed weak reflector array fabricated with a femtosecond laser for a fiber-optic quasi-distributed acoustic sensing system,” Optics Letters, 2020, 45(13): 3685–3688.
Jun 04, 2026
To address the issue of pressure detection at fixed points along a long-distance engineering route, this research proposes a microfiber loop resonator (MLR) array-based quasi
Nov 29, 2025
Abstract This paper presents a multiplexing technique for polymer optical fiber (POF) intensity variation-based sensors. The technique relies on the side-coupling between the light source and the POF
Feb 05, 2026
Here, the authors demonstrate a blind and sparse near-field array signal processing approach to enhance the measurement quality of fibre-optic distributed acoustic sensors. It further
Sep 18, 2025
A distributed optical fibre sensor is introduced which is capable of quantifying multiple dynamic strain perturbations along 1 km of a sensing fibre simultaneously using a standard
Jan 04, 2026
Quasi-distributed optical fiber sensors represent a transformative leap in optical fiber sensor technology, offering high-precision, long-distance monitoring capabilities through the strategic placement of
Nov 09, 2025
Here we reported a quasi-distributed fiber-optic sensor for both static and dynamic signal measurement based on weak reflector array.
Dec 01, 2025
This article presents a short-range fiber-optic quasi-distributed sensing device suitable for strain and temperature measurement. The sensing assembly consists of an fs laser inscribed
Nov 13, 2025
This paper presents a novel hybrid demodulation scheme for quasi-distributed fiber-optic acoustic sensor utilizing ultra-weak fiber Bragg grating (UWFBG) arrays as the discrete reflectors.
Apr 23, 2026
Sensors capable of making distributed measurements allow for monitoring of the entire structure. Optical fiber sensors are especially attractive for this purpose, since they are geometrically versatile and can
Feb 18, 2026
Distributed and quasi-distributed fiber optic sensors are systems that connect opto-electronic interrogators to an optical fiber (or cable), converting the fiber to an array of distributed sensors. The
Jan 16, 2026
This paper presents the development and characterization of a multiplexing technique for quasi-distributed optical fiber sensors based on the intensit
Jun 21, 2026
The experimental setup of a real-time quasi-distributed fiber optic sensor system based on resonance frequency mapping for multiplexing and measuring an identical weak FBG array is shown in Fig. 2.
Mar 03, 2026
In order to tackle the limitations of the previously proposed distributed and quasi-distributed techniques for optical fiber sensors, this paper presents a multiplexing technique for intensity
Sep 15, 2025
In this study, we demonstrate a real-time quasi-distributed fiber optic sensor system based on resonance frequency mapping for simultaneous multiplexing and strain measurement of an identical
Feb 02, 2026
Fiber Bragg grating (FBG) array, consisting of a number of sensing units in a single optical fiber, can be practically applied in quasi-distributed
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