Results 11 to 20 of about 9,055 (249)

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

Научно-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 , Manfred Rothhardt, Andrey V. Kulikov, Hartmut Bartelt   +3 more
doaj   +1 more source

SPECTRAL CHARACTERISTICS STUDY OF PHASE-SHIFTED FIBER BRAGG GRATINGS UNDER PRESSURE APPLIED PERPENDICULAR TO FIBER AXIS [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2018
Subject of Research.The paper presents the study of effect that occurs when pressure is applied to the phase-shifted fiber Bragg gratings perpendicular to the fiber axis. Method. Fiber Bragg gratings inscription was performed using Talbot interferometer,
Novikova V.A., Varzhel S.V., Dmitriev A.A, Zalesskaya Yu.K., Idrisov R.F.   +4 more
doaj   +1 more source

CENTRAL WAVELENGTH ADJUSTMENT OF LIGHT EMITTING SOURCE IN INTERFEROMETRIC SENSORS BASED ON FIBER-OPTIC BRAGG GRATINGS [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2015
The paper is focused on the investigation of fiber-optic interferometric sensor based on the array of fiber Bragg gratings. Reflection spectra displacement mechanism of the fiber Bragg gratings under the external temperature effects and the static ...
A. S. Aleynik, A. Y. Kireenkov, M. V. Mekhrengin, M. A. Chirgin, M. N. Belikin   +4 more
doaj   +1 more source

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

Results 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, Dmitrii V. Przhiialkovskii, Oleg V. Butov   +2 more
doaj   +1 more source

Generation of optical signals carrying OAM based on vortex fiber-optic periodic structures

Физика волновых процессов и радиотехнические системы, 2020
In this article, author considers the process of generation of fiber modes carrying orbital angular momentum (vortex modes) using chiral fiber Bragg gratings; in this context, the formation of vortex modes is carried out by converting thefundamental mode
Azat R. Gizatulin
doaj   +1 more source

Fiber Bragg grating fabrication by femtosecond laser radiation [PDF]

EPJ Web of Conferences, 2019
The paper presents the results of fiber Bragg gratings fabrication by femtosecond laser radiation using point-by-point and line-by-line inscription methods.
Chernikov Anton, Kochuev Dmitriy, Khorkov Kirill, Chkalov Ruslan, Davydov Nikolay   +4 more
doaj   +1 more source

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

ITM 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, Kalizhanova Aliya, Wójcik Waldemar, Kashaganova Gulzhan, Amirgaliyeva Saltanat, Dasibekov Azhibek, Kozbakova Ainur, Aitkulov Zhalau   +7 more
doaj   +1 more source

Bioresorbable optical fiber Bragg gratings [PDF]

Optics Letters, 2018
We demonstrate, for the first time, an inscription and wet dissolution study of Bragg gratings in a bioresorbable calcium-phosphate glass optical fiber. Bragg gratings, with average refractive index changes of 5.8×10-4, were inscribed using 193 nm excimer laser radiation.
Pugliese D., Konstantaki M., Konidakis I., Ceci-Ginistrelli E., Boetti N. G., Milanese D., Pissadakis S.   +6 more
openaire   +4 more sources

RESEARCH OF PARAMETERS OF FIBER-OPTICAL MEASURING SYSTEMS

Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2019
At present there exist a lot of technical devices, the failure of which can be connected not only with huge financial losses, but with the treat to the environment as well.
Waldemar Wójcik, Aliya Kalizhanova, Gulzhan Kashaganova, Ainur Kozbakova, Zhalau Aitkulov, Zhassulan Orazbekov   +5 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

Photonic 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, Hongye Wang, Qi Xia, Tingting Yuan, Xiaotong Zhang, Libo Yuan   +5 more
doaj   +1 more source