Results 1 to 10 of about 207,458 (283)

Optimization of VGG16 Algorithm Pattern Recognition for Signals of Michelson–Sagnac Interference Vibration Sensing System

open access: yesPhotonics, 2022
Signal recognition accuracy and recognition time are the two most important parameters of pattern recognition in a fiber optic vibration sensing system.
Jing Cheng   +5 more
doaj   +1 more source

Polarization Dependent Gain Stability of Raman Amplification Single-Core Feedback Structure Based on Consistency of Long-Axis Azimuths Variation

open access: yesPhotonics, 2023
The law of the polarization state of Raman fiber amplifier switch in single-core feedback structures is unknown. In this paper, two kinds of optical paths with single-core feedback structures are constructed, namely the Raman amplified Faraday rotating ...
Fengzhen Yu   +5 more
doaj   +1 more source

FBG Arrays for Quasi-Distributed Sensing: A Review

open access: yesPhotonic Sensors, 2021
Fiber Bragg grating (FBG) array is a powerful technique for quasi-distributed sensing along the entire length of sensing fiber with fast response and high precision. It has been widely used for temperature, strain, and vibration monitoring.
Chengli Li   +4 more
doaj   +1 more source

Fiber-diffraction Interferometer using Coherent Fiber Optic Taper [PDF]

open access: yes, 2010
We present a fiber-diffraction interferometer using a coherent fiber optic taper for optical testing in an uncontrolled environment. We use a coherent fiber optic taper and a single-mode fiber having thermally-expanded core.
Hagyong Kihm   +5 more
core   +4 more sources

Simulation and design of C + L broadband communication single mode fiber

open access: yesResults in Optics, 2023
A novelty CL fiber which can expand L-band communication is proposed to meet the urgent demand of optical fiber transmission bandwidth for large capacity communication system. The influence of L-band attenuation on the OSNR (optical signal-to-noise ratio)
G.H. Zhang   +11 more
doaj   +1 more source

2D and 3D Shape Sensing Based on 7-Core Fiber Bragg Gratings

open access: yesPhotonic Sensors, 2020
A fiber-optic shape sensing based on 7-core fiber Bragg gratings (FBGs) is proposed and experimentally demonstrated. The investigations are presented for two-dimensional and three-dimensional shape reconstruction by distinguishing bending and twisting of
Tianting Lai   +5 more
doaj   +1 more source

A Medium-Frequency Fiber Bragg Grating Accelerometer Based on Flexible Hinges

open access: yesSensors, 2021
Mediumfrequency fiber Bragg grating (FBG) acceleration sensors are used in important applications in mechanical, aerospace and weapon equipment, and have strict requirements in terms of resonance frequency and sensitivity.
Zichuang Li   +5 more
doaj   +1 more source

CDs-Peroxyfluor Conjugation for Ratiometric Fluorescence Detection of Glucose and Shortening Its Detection Time from Reaction Dynamic Perspective

open access: yesBiosensors, 2023
A ratiometric fluorescence probe based on the conjugation of peroxyfluor-NHS (PF) and carbon dots (CDs) was designed for selective and rapid detection of glucose.
Yangjie Li   +4 more
doaj   +1 more source

Microbend fiber-optic sensor [PDF]

open access: yesApplied Optics, 1984
Intensity modulation induced by microbending in multimode fibers is considered as a transduction mechanism for detecting environmental changes such as pressure, temperature, acceleration, and magnetic and electric fields. A generic microbend sensor has been defined and studied, and its components, such as sensing fiber, light source, optical fiber ...
N, Lagakos, J H, Cole, J A, Bucaro
openaire   +2 more sources

Fiber Optic Calorimetry [PDF]

open access: yes, 1997
A twin-bridge calorimeter using optical fiber as the sensor element was constructed and tested. This system demonstrates the principle and capability of using optical fibers for heat-flow measurements of special nuclear material. This calorimeter uses piezoelectric-generated phase-carrier modulation with subsequent electronic signal processes to allow ...
Rudy, C.   +4 more
openaire   +4 more sources

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