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Special Issue "Interferometric Fiber Sensors"

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

Deadline for manuscript submissions: closed (15 September 2023) | Viewed by 1332

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Special Issue Editors

Dr. Xiyuan Chen

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Guest Editor

Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology, Ministry of Education, School of Instrument Science and Engineering, Southeast University, Nanjing 210096, China
Interests: navigation and positioning; integrated navigation; optical sensors; GPS; measurement

Dr. Carlos Marques

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Physics Department and i3N, University of Aveiro, 3810-193 Aveiro, Portugal
Interests: photonics; optics for aerospace; optical sensors; optical devices; machine learning for optics
Special Issues, Collections and Topics in MDPI journals

Dr. Chong Shen
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Guest Editor

Key Laboratory of Instrumentation Science and Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, China
Interests: integrated navigation; optical sensors

Special Issue Information

Dear Colleagues,

Interferometric fiber sensors have been applied in various photonic applications, such as the sensing of temperature, strain, pressure, and refractive index. It is obvious that interferometric fiber-optic sensors have great potential in practical applications such as the real-time deformation monitoring of aircrafts, ships, bridges, and constructions. The use of sensing materials both on and in optical fibers is well-established for optical, chemical, and biochemical sensors. The porous and slot structure of optical fibers has the advantage of accepting various kinds of materials, which improves the sensing capabilities.

This Special Issue intends to publish papers on topics related to interferometric fiber sensors, and to address the wide range of applications of interferometric fiber sensors. Both review articles and original research papers related to the application of interferometric fiber sensors are solicited.

Dr. Xiyuan Chen
Dr. Carlos Marques
Dr. Chong Shen
Guest Editors

Manuscript Submission Information

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Keywords

fiber interferometers
fiber Bragg grating sensors
integrated optics
physical and biochemical optical sensors
data acquisition and processing
integrated optics
fiber-optic gyroscope

Published Papers (3 papers)

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Research

Open AccessArticle

Research on Simultaneous Measurement of Magnetic Field and Temperature Based on Petaloid Photonic Crystal Fiber Sensor

and

Sensors 2023, 23(18), 7940; https://doi.org/10.3390/s23187940 - 16 Sep 2023

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Abstract

In this paper, we propose and design a magnetic field and temperature sensor using a novel petaloid photonic crystal fiber filled with magnetic fluid. The PCF achieves a high birefringence of more than 1.43 × 10⁻² at the wavelength of 1550 nm via the design of material parameters, air hole shape and the distribution of the photonic crystal fiber. Further, in order to significantly improve the sensitivity of the sensor, the magnetic-fluid-sensitive material is injected into the pores of the designed photonic crystal fiber. Finally, the sensor adopts a Mach–Zehnder interferometer structure combined with the ultra-high birefringence of the proposed petaloid photonic crystal fiber. Magnetic field and temperature can be simultaneously measured via observing the spectral response of the x-polarization state and y-polarization state. As indicated via simulation analysis, the sensor can realize sensitivities to magnetic fields and temperatures at −1.943 nm/mT and 0.0686 nm/°C in the x-polarization state and −1.421 nm/mT and 0.0914 nm/°C in the y-polarization state. The sensor can realize the measurement of multiple parameters including temperature and magnetic intensity and has the advantage of high sensitivity. Full article

(This article belongs to the Special Issue Interferometric Fiber Sensors)

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Open AccessCommunication

High-Sensitivity Temperature Sensor Based on Fiber Fabry-Pérot Interferometer with UV Glue-Filled Hollow Capillary Fiber

and

Sensors 2023, 23(18), 7687; https://doi.org/10.3390/s23187687 - 06 Sep 2023

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Abstract

Optical fiber Fabry-Pérot (FP) interferometer sensors have long been the focus of researchers in sensing applications because of their simple light path, low cost, compact size and convenient manufacturing methods. A miniature and highly sensitive optic fiber temperature sensor using an ultraviolet glue-filled FP cavity in a hollow capillary fiber is proposed. The sensor is fabricated by fusion splicing a single-mode fiber with a hollow capillary fiber, which is filled with ultraviolet glue to form a FP cavity. The sensor has a good linear response in the temperature testing and high-temperature sensitivity, which can be increased with the length of the FP cavity. The experimental results show that the temperature sensitivity reaches 1.174 nm/°C with a high linear response in the range of 30–60 °C. In addition, this sensor is insensitive to pressure and can be highly suitable for real-time water temperature monitoring for ocean research. The proposed ultraviolet glue-filled structure has the advantages of easy fabrication, high-temperature sensitivity, low cost and an arbitrary length of capillary, which has broad application prospects for marine survey technology, biological diagnostics and environmental monitoring. Full article

(This article belongs to the Special Issue Interferometric Fiber Sensors)

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Open AccessCommunication

Influence of Ion Exchange Process Parameters on Broadband Differential Interference

Kazimierz Gut

and

Marek Błahut

Sensors 2023, 23(13), 6092; https://doi.org/10.3390/s23136092 - 02 Jul 2023

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Abstract

The paper presents theoretical analyses and experimental investigations of broadband differential interference in planar gradient waveguides made via K⁺-Na⁺ ion exchange in BK-7 glass. This technology, due to its large polarimetric dispersion, is especially useful for applications in differential interferometry. We discuss the influence of technological parameters on the operation characteristics of the structure in terms of sensor applications. The refractive index variation in the measured external surroundings affects the modal properties of TE and TM modes and the spectral distribution at the output of the differential interferometer. The optical system described in this work has been designed specifically for use in biological systems where variations in the index of refraction need to be measured. Full article

(This article belongs to the Special Issue Interferometric Fiber Sensors)

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