Results 1 to 10 of about 15,020 (231)

Analisa Perbandingan Kinerja Modulasi Langsung dan Modulasi Eksternal pada Adaptif Fiber Bragg Grating di Radio over Fiber System

open access: yesSimetris: Jurnal Teknik Mesin, Elektro dan Ilmu Komputer, 2023
Kombinasi Frekuensi Radio dan Fiber Optik telah menghasilkan transmisi berkapasitas tinggi dengan biaya komponen yang lebih rendah dan menjadikan Radio over Fiber sebagai trend komunikasi broadband besar saat ini.
Febrizal Ujang   +5 more
doaj   +1 more source

Temperature monitoring system using fiber Bragg grating (FBG) approach [PDF]

open access: yesAIP Conference Proceedings, 2020
In this paper, a temperature monitoring system is proposed by using fiber Bragg Grating (FBG) approach. This system can be done by using OptiSystem simulation and hardware implementation. FBG was employed as it allows a reflected wavelength of light that shifts in response to variations in temperature and/or strain. Generally, FBG sensors offer ease of
N. A. Rosman   +3 more
openaire   +1 more source

Fiber-Optic Bragg Gratings for Temperature and Pressure Measurements in Isotope Production Targets for Nuclear Medicine

open access: yesApplied Sciences, 2020
A Bragg grating inscribed into an inorganic optical fiber was tested in proton and neutron fields up to doses of 472 Gy. Observation showed that radiation had no effect on the performance of the Fiber Bragg Grating (FBG) used as a gauge measuring ...
Michael Bakaic   +6 more
doaj   +1 more source

Research of the Spectral Characteristics of Apodized Fiber Bragg Gratings [PDF]

open access: yesITM Web of Conferences, 2019
Fiber Bragg Gratings (FBG) are widely used in different areas of the state-of–the -art fiber optics. Every task imposes specified requirements to the FBG spectral characteristics, which are scheduled at the gratings manufacturing stage. Manufacturing and
Kalimoldayev Maksat   +7 more
doaj   +1 more source

Fiber Bragg grating (FBG) sensors used in coal mines [PDF]

open access: yesPhotonic Sensors, 2014
Abstract The fiber Bragg grating (FBG) strain sensors were used for on-line monitoring of the stress variation of the lined wall in the gateway retained along the goaf of No. 3203 coal mining face in Dongtan Mine. The results showed that the FBG strain sensor with the wide measuring range could measure the stress variation accurately during ...
Wang, Jinyu   +6 more
openaire   +1 more source

Femtosecond-Laser-Assisted Fabrication of Radiation-Resistant Fiber Bragg Grating Sensors

open access: yesApplied Sciences, 2022
This paper demonstrates the fabrication of radiation-resistant fiber Bragg grating (FBG) sensors using infrared femtosecond laser irradiation. FBG sensors were written inside acrylate-coated fluorine-doped single-mode specialty optical fibers.
Hun-Kook Choi   +6 more
doaj   +1 more source

Simulation Study on Spectral Characteristics of FBG based on Integrated Structure of Core-and-cladding

open access: yesGuangtongxin yanjiu, 2021
It is difficult to prepare Fiber Bragg Grating (FBG) with integrated structure of core-and-cladding. This paper first analyzes the structure characteristics of FBG with integrated structure.
Yun-hui DONG   +3 more
doaj   +1 more source

Continuously Tunable Erbium-Doped Fiber Ring Laser Using Fiber Bragg Grating

open access: yesInternational Islamic University Malaysia Engineering Journal, 2012
An efficient tunable erbium-doped fiber (EDF) ring laser utilizing a single fiber Bragg grating (FBG) and an optical circulator is investigated. The laser demonstrates a threshold of 3.43 mW and a slope efficiency of 12.5%.
S. W. Harun H. Ahmad and P. Poopalan
doaj   +1 more source

Use of FBG sensors for SHM in aerospace structures [PDF]

open access: yes, 2012
This paper details some significant findings on the use of the fiber Bragg grating (FBG) sensors for structural health monitoring (SHM) in aerospace fiber reinforced polymer (FRP) structures. A diminutive sensor provides a capability of imbedding inside
Epaarachchi, Jayantha   +3 more
core   +3 more sources

Design of a new method for detection of occupancy in the smart home using an FBG sensor [PDF]

open access: yes, 2020
This article introduces a new way of using a fibre Bragg grating (FBG) sensor for detecting the presence and number of occupants in the monitored space in a smart home (SH).
Fajkus, Marcel   +3 more
core   +1 more source

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