This paper provides a systematic introduction to the principle of FP cavity fiber optic sensors based on thin film technology and reviews the applications and development trends of this sensor in vari...
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Abstract This article proposes a novel ultra-sensitive fiber optic temperature sensor based on a compact cascaded Fabry-Perot interferometer (FPI) and Vernier effect (VE). Firstly, a
Here, a diaphragm based optical fiber sensor array is proposed, in which each sensor tip is made of 10-layer graphene diaphragm and optical fiber pigtail, with the compact size of about 2.5 mm in
When ultrasound acts on sensor, it causes deformation of the polymer, resulting in a change in the length of the F-P cavity, which modulates the optical phase of the reflected light from
Overview The Sunstone PSICAM Point-Source Integrating Cavity Absorption Meter is a precision optical instrument engineered for high-sensitivity, in situ–compatible measurement of spectral absorption
In this work, two systems consisting of single-point and multi-point displacement sensing are built, and the ring-down curves are demodulated using low-cost microcontroller unit and self-developed optical
A fiber-based Fabry–Perot (FP) optical sensor is well-suited for the rapid and selective detection of gas molecules, including volatile organic compounds (VOC), explosive analytes, etc.
An experimental study of the interaction between a Mylar® polymer film and a multimode fiber-optic is presented for the simultaneous fiber-optic detection of low-pressure and liquid levels.
We present an overview of recent developments in optical fiber-based wearable sensors, focusing on two mechanisms: wavelength interrogation and intensity modulation for the detection of
In this study, a fiber-optic Fabry–Perot (FP) high-temperature pressure sensor based on sapphire direct bonding is proposed and experimentally demonstrated. The
Explore fiber optic sensors: their working principles, types (intrinsic, extrinsic, hybrid), and diverse applications in mechanical, chemical, and structural health monitoring.
In this study, we fabricated two types of optical-fiber-based sensors for non-invasive respiratory monitoring. A nasal-cavity-attached respiration sensor can measure the temperature variations of
The optical fiber F-P cavity sensing mechanism and the pH response characteristics of PANI can achieve measurement of pH value. pH is an important chemical parameter in the fields of
We present an all-fiber, fully open Fabry–Perot interferometer (FPI) optofluidic sensor with high visibility. The FPI is fabricated by aligning a spherical-ended fiber and a flat-ended fiber in
In this article, we introduce a new concept for an in-line optical fiber force sensor probe, which is based on two cascaded Fabry-Perot (F-P) cavities to generate the Vernier effect and
The chitosan-FPI based optical fiber humidity sensor offers the advantages of the simplified fabrication processes, compact structural configuration, cost-effectiveness, high sensitivity,
To meet the need of the measurement in high temperature and high pressure in oil and gas well, an optical fiber extrinsic Fabry Perot(F-P) cavity pressure sensor based on corrugated
Fabry–Perot interferometers have stimulated numerous scientific and technical applications ranging from high-resolution spectroscopy over metrology, optical filters, to interfaces of