A novel fiber optic sensor has been developed using suspended core fiber (SCF) to simultaneously measure the refractive index (RI) and temperature of liquids. The innovative design comprises an
An arc-shaped misaligned structure interferometer based on a single-mode fiber is proposed herein, in which a layer of composite material is coated onto the structure to improve its
The Vernier effect has been successfully applied to various fiber-optic sensors as a way to increase sensitivity. The harmonic Vernier effect (HVE) serves as an extension of the Vernier effect.
A fiber optic multi-parameter sensor is proposed based on a Mach-Zehnder interferometer (MZI). The in-line MZI is constructed by inscribing a linear waveguide and a helical waveguide within a segment of
A high-sensitivity optical fiber curvature sensor based on eight-core fiber (ECF) is proposed and demonstrated. The sensor is fabricated by directly fusing a segment of ECF between
We proposed a fiber optic high temperature sensor based on the Mach-Zehnder interference (MZI) structure, which is composed of two lengths of multi-mode fibers (MMFs), a length
In this article, an integrated optical fiber sensor is designed and experimentally demonstrated for simultaneous measurement of magnetic field, displacement, and temperature. Only
A balloon-type optical fiber sensor (OFS) for strain measurement was proposed, and the measurement range was significantly increased with the assistan
We demonstrate an all-fiber, high-sensitivity, dual-parameter sensor for humidity and temperature. The sensor consists of a symmetrical, non
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A high-sensitivity fiber optic temperature sensor based on the enhanced harmonic Vernier effect (HVE) is proposed, which consists of two Fabry–Perot interferometers (FPI) that are
To address the significant errors caused by nonlinear sensitivity in SMM, the combination of convolutional neural network and bidirectional long short-term memory (CNN-BiLSTM) model was
Featuring high sensitivity, compact design, and robust performance, the proposed sensor is promising for applications in flexible tactile sensing for intelligent robots, adaptive intelligent sensing systems,
This work presents a dual-parameter photonic crystal fiber (PCF) sensor based on surface plasmon resonance (SPR), which enables simultaneous detection of gasoline adulteration
Abstract A high sensitive fiber-optic strain sensor, which consists of a cantilever, a tandem rod and a fiber collimator, was proposed.
The illegal adulteration of gasoline with kerosene seriously compromises vehicle performance, environmental safety, and public health. However, prevailing detection techniques are
The sensing sensitivity and response are highly dependent on the pore size and hydrophobicity of the matrix for optical fiber dissolved oxygen (DO) sensors. This work describes the
Distributed sensing fibers for temperature, pressure, flow, acoustics, or strain, that operate even in harsh environments with superior optical performance.
The presented sensor is characterized by its cost-effectiveness, remarkable sensitivity, excellent operational stability, high measurement precision, and robust resistance to external
In this work, we proposed and demonstrated a high-sensitivity optical fiber temperature sensor based on lossy mode resonance (LMR). The sensor is comp
As the length of the optical fiber in the sensing unit increases, the effective length affected by magnetostriction also extends, resulting in a larger phase difference and consequently enhanced
They developed a specialized fiber sensor fabricated from high-strength birefringent fiber coated with a protective polyimide layer, designed to
The fiber-optic cascaded Fabry-Perot (FP) cavity structure is a significant interferometric sensor configuration, offering superior spectral resolution compared to Mach-Zehnder type sensors.
Finally, current challenges and promising directions for the next generation of fiber-optic multiparameter sensors are outlined, with a view toward
Abstract This paper presents a fiber-optic parallel Fabry-Perot interferometer (FPI) sensor based on a mismatched structure and vernier effect, which can simultaneously measure strain and
This work proposes an all-optical fiber sensing architecture with in-sensor computing that achieves <3 ns demodulation latency, sub-nano strain resolution, and multi-parameter sensing
We have developed a highly sensitive fiber optic sensor that can measure temperature and pressure. The sensor comprises two Fabry–Perot interferometers (FPIs), FPI1 and FPI2,
This paper conducts a systematic analysis of the sensing mechanisms in fiber-optic pressure sensors, with a particular focus on the
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