Results 21 to 30 of about 132,674 (264)
Temporal analog of Bragg gratings
Optics Letters, 2023 Recently, scalar coupled-wave theory has been employed to analyze a medium with periodic time-varying permittivity, providing simple expressions and, consequently, straightforward insights into the parametric amplification mechanism. Here, we combine such an approach with the Möbius transformation method to investigate the dispersion and optical ...
Stefanos Fr. Koufidis +2 more
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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. +4 more
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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 +3 more
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A simple method for fabricating phase-shifted fibre Bragg gratings with flexible choice of centre wavelength [PDF]
, 2009 A simple technique for fabricating phase-shifted fibre Bragg gratings (PSFBGs) without the use of a phase-shifted phase mask is presented. Two, 3-mm long, standard fibre Bragg gratings (FBGs) were inscribed sequentially in singlemode fibre at the same
Ralph P. Tatam +5 more
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Advances 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
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High-precision point-by-point fiber Bragg grating inscription
Results 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
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Multi-Harmonic Bragg Gratings [PDF]
Bragg 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
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Thermal dependence of the strain response of optical fibre Bragg gratings. [PDF]
, 2004 The temperature dependence of the strain sensitivity of fibre Bragg gratings written into a number of different fibre types has been investigated. It was found that the strain response changed on average by 0.21 ± 0.03 fm µε-1 °C-1 over a range of ...
O'Dwyer, Martin +12 more
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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 +4 more
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Wavelength tunable TFBG based microwave sensor using surface plasmon resonance
Egyptian 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
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