Results 21 to 30 of about 45,769 (300)
Arc-Induced Long Period Gratings in Erbium-Doped Fiber
IEEE Photonics Journal, 2019 In this paper, we report about the fabrication of long period gratings (LPGs) directly into an Erbium-doped fiber, by using the electric arc discharge technique. The attention is focused on the writing process and the resulting properties, by considering
Flavio Esposito +2 more
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Sensing Features of Arc-induced Long Period Gratings
Proceedings, 2019 In this work, we report a systematic investigation about the sensitivity of arc-induced Long Period Gratings in standard SMF28 fiber. Several gratings were fabricated with period Λ in range 330−630 µm and characterized towards changes in ...
Flavio Esposito +3 more
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Overwrite fabrication and tuning of long period gratings [PDF]
, 2016 The central wavelengths of the resonance bands are critical aspect of the performance of long period gratings (LPGs) as sensors, particularly for devices designed to operate near the phase matching turning point (PMTP), where the sensitivity to ...
Barrington, James +3 more
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Virtual long-period fiber gratings [PDF]
SPIE Proceedings, 2004 In this paper a theoretical prediction of a new kind of in-fiber devices is presented. They behave essentially like long-period Bragg gratings except for the fact that they are not permanent but volatile. This is because these devices are not formed by the UV-induced increment of the refractive index but by the twisting of a pristine HiBi fiber.
Jáuregui Misas, César +5 more
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Calculation of optical-waveguide grating characteristics using Green's functions and the Dyson's equation [PDF]
, 2006 We present a method for calculating the transmission spectra, dispersion, and time delay characteristics of optical-waveguide gratings based on Green's functions and Dyson's equation.
Mortensen, Niels Asger, Rindorf, Lars
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Structural microfiber long-period gratings
Optics Express, 2012 We experimentally demonstrate a novel structural long-period grating by helically coiling one microfiber onto another with the relatively thicker diameter. Owing to the strong periodic modulation of the coiled microfiber to the evanescent field of the straight microfiber, a resonance transmission notch of ~16.2 dB can be induced for a compact device ...
Li-Peng, Sun +3 more
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The calculation of a two-cascade long-period fiber grating of the refractive index
Физика волновых процессов и радиотехнические системы, 2022 A method is proposed for calculating the spectral characteristics of cascade long-period fiber gratings of the refractive index of the core based on the method of partial regions and decomposition. According to the method, the structure is represented as
Roman V. Budaragin +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
Chehura, Edmon +2 more
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Long Period Fibre Gratings [PDF]
, 2012 In essence, a long period fibre grating (LPFG) is an all-fibre device with wavelength dependent loss. As a band rejection filter, all light in a spectral slice is discarded without affecting the amplitude and phase of neighbouring wavelengths, with the additional advantage of low insertion losses and minimum backreflection (Daxhelet, 2003).
Martinez-Rios, Alejandro +3 more
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Step-changed long-period fiber gratings [PDF]
, 2014 Author name used in this publication: Chung-Loong ChoyAuthor name used in this publication: A-Ping ZhangAuthor name used in this publication: Muhtesem Süleyman DemokanAuthor name used in this publication: Xiao-Ming Tao2001-2002 > Academic research ...
Chan, HLW +6 more
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