Results 21 to 30 of about 4,697 (230)

EFFECT OF OPTICAL FIBER HYDROGEN LOADING ON THE INSCRIPTION EFFICIENCY OF CHIRPED BRAGG GRATINGS BY MEANS OF KrF EXCIMER LASER RADIATION [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2016
Subject of Research.We present comparative results of the chirped Bragg gratings inscription efficiency in optical fiber of domestic production with and without low-temperature hydrogen loading. Method.
Sergey V. Varzhel   +3 more
doaj   +1 more source

Wavelength tunable TFBG based microwave sensor using surface plasmon resonance

open access: yesEgyptian Journal of Remote Sensing and Space Sciences, 2016
A noble idea is used to propose a wavelength tunable tilted Fiber Bragg Gratings based microwave sensor using surface plasmon resonance. The Bragg wavelength shifts linearly about 6 pm/°C, due to the temperature change.
Imran Khan, Md. Mostafizur Rahman
doaj   +1 more source

Point-by-point inscription of chirped apodized fiber Bragg gratings for application as ultrashort pulse stretchers

open access: yesResults in Physics, 2022
There are special requirements for chirped fiber Bragg gratings used as stretchers in ultrafast fiber lasers. The benefits of fabricating fiber stretchers by the femtosecond point-by-point single-shot technique are described.
Ivan Ulyanov   +2 more
doaj   +1 more source

Multi-Harmonic Bragg Gratings [PDF]

open access: yesBragg Gratings, Photosensitivity, and Poling in Glass Waveguides, 1999
Multi-harmonic Fibre Bragg Gratings have been demonstrated experimentally and studied in detail theoretically showing complex reflection response and band-gap disappearance.
Zervas, M.N.   +3 more
openaire   +1 more source

High-precision point-by-point fiber Bragg grating inscription

open access: yesResults in Physics, 2021
The paper presents a novel multi-pass point-by-point method for high-precision inscription of fiber Bragg gratings with a femtosecond laser radiation. The dynamics of the gratings formation is demonstrated in comparison with the classical method of UV ...
Dmitrii V. Przhiialkovskii   +1 more
doaj   +1 more source

Capacity of Wavelength and Time Division Multiplexing for Quasi-Distributed Measurement Using Fiber Bragg Gratings

open access: yesAdvances in Electrical and Electronic Engineering, 2015
In this paper, an analysis of the use of wavelength and time division multiplexing techniques for quasi-distributed measurement in uniform fiber Bragg gratings is presented.
Marcel Fajkus   +6 more
doaj   +1 more source

Hyperspectral study of the coupling between trions in WSe$_2$ monolayers to a circular Bragg grating cavity

open access: yesComptes Rendus. Physique, 2021
Circular Bragg gratings compose a very appealing photonic platform and nanophotonic interface for the controlled light-matter coupling of emitters in nanomaterials.
Iff, Oliver   +7 more
doaj   +1 more source

In-Fiber Thermally Diffused Coupler and Fiber Bragg Grating Inscribed in Twin-Core Fiber for Sensitivity-Enhanced Vector Bending Sensing

open access: yesPhotonic Sensors, 2023
A vector bending fiber sensor based on core-by-core inscribed fiber Bragg gratings in a twin-core fiber has been proposed and experimentally demonstrated.
Lingzhi Meng   +5 more
doaj   +1 more source

Numerical Analysis of Thermal Dependence of the Spectral Response of Polymer Optical Fiber Bragg Gratings [PDF]

open access: yesIraqi Journal for Electrical and Electronic Engineering, 2016
The thermal dependence of the spectral response (i.e. transmission, reflection and time delay (r) responses) of uniform polymer optical fiber (POF) Bragg gratings has been investigated. In addition to the temperature dependence, the effects of grating
Hisham K. Hisham
doaj  

A Fiber Bragg Grating-Based Anemometer [PDF]

open access: yesSensors, 2018
A novel fiber anemometer based on two pairs of fiber gratings is experimentally demonstrated and can simultaneously detect wind speed and wind direction. One pair of gratings, which are separated by 90° in space, is fixed on a small stainless steel pipe driven by a rotating disc for measuring the wind-direction angle.
Huang, Chuan-Ying   +3 more
openaire   +3 more sources

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