Results 31 to 40 of about 16,245 (165)
Curvature prediction of long‐period fibre grating based on random forest regression
IET Optoelectronics, 2022 This study proposes a long‐period fibre grating (LPFG) curvature estimation method based on random forest regression (RFR) to address the shortcomings of the existing curvature evaluation method, namely, polynomial fitting; these shortcomings cause ...
Xingliu Hu +3 more
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Optical fibre long period grating spectral actuators utilizing ferrofluids as outclading overlayers [PDF]
Journal of the European Optical Society-Rapid Publications, 2011 Results are presented on the spectral tuning of optical fibre long period gratings utilizing water and oil based ferrofluids as outclading overlayers, under static magnetic field stimulus.
Konstantaki Maria +2 more
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Overwrite fabrication and tuning of long period gratings
Optics Express, 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 measurements can vary rapidly.
Partridge, Matthew +3 more
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Angularly Cascaded Long-Period Fiber Grating for Curvature and Temperature Detection
Sensors, 2023 A high-sensitivity curvature sensor with dual-parameter measurement ability based on angularly cascaded long-period fiber grating (AC-LPFG) is proposed and experimentally demonstrated, which consists of two titled LPFGs (TLPFGs) with different tilt ...
Anping Xiao +9 more
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Transmission Properties of Metallic Grating with Subwavelength Slits in THz Frequency Region
Active and Passive Electronic Components, 2007 This paper presents a fully experimental and theoretical study on transmission properties of a deep metallic grating with subwavelength slits in THz frequency region by using THz time domain spectroscopy (THz-TDS).
Dong Liang +9 more
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Sensors, 2010 This paper presents the feasibility of utilizing fiber Bragg grating (FBG) and long-period fiber grating (LPFG) sensors for nondestructive evaluation (NDE) of infrastructures using Portland cement concretes and asphalt mixtures for temperature, strain ...
Jian-Neng Wang, Jaw-Luen Tang
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Nested long period grating interferometers [PDF]
SPIE Proceedings, 2007 The concept of nested fibre optic long period grating (LPG) based interferometers is introduced. A number of in-series, identical LPGs may be used to form a set of nested, multiplexed Mach-Zehnder interferometers that may demodulated and demultiplexed by virtue of a Fourier analysis of the optical spectrum.
Murphy, Richard P. +2 more
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Results in Physics, 2019 We study on the nonlinear tunneling effect of snakelike self-similar waves of the nonlinear Schrödinger equation with gains in an asymmetric dual-core waveguide amplifier with a long-period grating.
Jun-Rong He, Si-Liu Xu, Li Xue
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Refractive Index Sensing by Using Mechanically Induced Long-Period Grating
IEEE Photonics Journal, 2012 In this paper, a refractive index sensor using a mechanically induced long-period grating is proposed and experimentally demonstrated. The sensing element is based on a composite optical waveguide, which is made of a single-mode fiber, a Teflon-cannula ...
Xiaojun Zhou +3 more
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Journal of Chemistry, 2020 A high temperature-sensitive long-period fiber grating (LPFG) sensor fabricated by the local fictive temperature modification is proposed and demonstrated.
Guorui Zhou +11 more
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