Cryogenic Temperature Response Of Fibre Optic Long Period Gratings. [PDF]
, 2003 The thermal response of the attenuation bands of an optical fibre long period grating was monitored over a temperature range of 4.2–280 K. A linear dependence of the central wavelength of the band, of gradient 0.2 nm K-1, was observed over the range 77 ...
Bateman, Rod +4 more
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Optical fibre long period grating based selective vapour sensing of volatile organic compounds [PDF]
, 2010 The chemical sensing capabilities of an optical fibre long period grating (LPG) coated with a functional material are explored. The LPG period and coating thickness are chosen such that the mode transition region, characteristic of LPGs coated with ...
Tatam, Ralph P. +4 more
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Dynamic Responses Measured by Optical Fiber Sensor for Structural Health Monitoring
Applied Sciences, 2019 An optical fiber sensing system integrating a fiber Bragg grating (FBG) sensor, a long-period fiber grating (LPFG) optical filter and a photodetector is presented to monitor the dynamic response of a structure subjected to base excitation and impact ...
Shiuh-Chuan Her, Shin-Chieh Chung
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Modification of the refractive index response of long period gratings using thin film overlays. [PDF]
, 2005 The response of a fibre optic long period grating (LPG) to the surrounding refractive index is shown to be modified by the deposition of a thin film of thickness of order 100 nm onto the cladding.
Ishaq Imran, M +4 more
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Fabrication of rGO-GO Long Period Fiber Grating Using Laser Reduction Method
IEEE Photonics Journal, 2017 A laser-reduction technique is investigated to fabricate a novel long period fiber grating (LPFG), whose period is a section of graphene oxide (GO) and reduced graphene oxide (rGO) films on a side polished fiber.
Liheng Chen +9 more
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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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Characterization of Long-period Grating Refractive Index Sensors and Their Applications
Sensors, 2009 The influence of grating length and bend radius of long-period gratings (LPGs) on refractive index sensing was examined. Sensitivity to refractive indexes smaller than that of silica could be enhanced by bending LPGs.
Kei Urabe, Hiroshi Tsuda
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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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Arc-Induced Long Period Fiber Gratings [PDF]
Journal of Sensors, 2016 Long period fiber gratings produced by the electric arc technique have found an increasing interest by the scientific community due to their ease to fabricate, virtually enabling the inscription in any kind of fiber, low cost, and flexibility. In 2005 we have presented the first review on this subject.
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