Results 51 to 60 of about 18,792 (313)
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
doaj +1 more source
Long-period gratings in polymer ridge waveguides
Optics Express, 2005 We report the design and fabrication of long-period waveguide gratings (LPWGs) in benzocyclobutene (BCB) ridge waveguides. We apply an accurate perturbation theory to analyze the LPWGs. In particular, the phase-matching condition, the coupling coefficients, the temperature dependence of the resonance wavelength, the bandwidth, and the polarization ...
Q, Liu, K, Chiang, K, Lor
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Small-period long-period fiber grating with improved refractive index sensitivity and dual-parameter sensing ability [PDF]
, 2017 We UV inscribe and characterize a long-period fiber grating with a period of 25 μm. A series of polarization-dependent dual-peak pairs can be seen in the transmission spectrum, even though only the symmetrical refractive index modification is introduced.
Sun, Zhongyuan +5 more
core +1 more source
Long Period Bragg Grating in Coaxial Transmission Lines
Journal of Microwaves, Optoelectronics and Electromagnetic ApplicationsThis work shows the utilization of a coaxial cable for the fabrication of a long period Bragg grating. The grating is fabricated removing the dielectric in short pieces of the cable so that the discontinuities account for the variation in the medium ...
Sergio Luiz Stevan Jr +4 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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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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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
openaire +3 more sources
In-fiber subpicosecond pulse shaping for nonlinear optical telecommunication data processing at 640 Gbit/s [PDF]
, 2012 We review recent work on all-fiber (long-period fiber grating) devices for optical pulse shaping, particularly flat-top pulse generation, down to the subpicosecond range and their application for nonlinear switching (demultiplexing) of optical time ...
A. T. Clausen +26 more
core +1 more source
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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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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