Results 11 to 20 of about 20,938 (278)
Recent Progress in Fabrications and Applications of Heating-Induced Long Period Fiber Gratings [PDF]
Sensors, 2019 This paper presents a review of our work concerning the recent progress in fabrications and applications of heating-induced long period fiber gratings (LPFGs).
Cailing Fu +6 more
doaj +2 more sources
Immunosensor Based on Long-Period Fiber Gratings for Detection of Viruses Causing Gastroenteritis [PDF]
Sensors, 2020 Since the norovirus is the main cause of acute gastroenteritis all over the world, its fast detection is crucial in medical diagnostics. In this work, a rapid, sensitive, and selective optical fiber biosensor for the detection of norovirus virus-like ...
Marta Janczuk-Richter +9 more
doaj +2 more sources
Sensing Characteristics of Tilted Long Period Fiber Gratings Inscribed by Infrared Femtosecond Laser [PDF]
Sensors, 2018 We propose a novel tilted long period fiber grating (TLPFG) design, inscribed using a line-by-line inscription technique and an infrared femtosecond (Fs) laser.
Jian Tang +4 more
doaj +2 more sources
High Temperature Optical Fiber Sensor Based on Compact Fattened Long-Period Fiber Gratings [PDF]
Sensors, 2013 A compact high temperature fiber sensor where the sensor head consists of a short fattened long period fiber grating (F-LPFG) of at least 2 mm in length and background loss of −5 dBm is reported.
Eduardo Huerta-Mascotte +8 more
doaj +2 more sources
Multi-Parameter Sensing Device to Detect Liquid Layers Using Long-Period Fiber Gratings [PDF]
Sensors, 2018 Insoluble liquids show layers such as water and oil. The detection of the exact interface locations and the level changes for layered liquids are of paramount importance for chemistry purifications, liquid storage in reservoirs, oil transportation, and ...
Zhihui Pan, Ying Huang, Hai Xiao
doaj +2 more sources
Review of Helical Long-Period Fiber Gratings
Photonics, 2021 In this paper, comprehensive remarks are given that focus on the main fabrications and wide applications of helical long-period fiber gratings (HLPGs).
Chao Ma, Jian Wang, Libo Yuan
doaj +1 more source
Photonics, 2022 Phase-inserted fiber gratings (PI-FGs) refer to those gratings where there exist a number of the phase-shifts (spatial spacing) among different sections (or local periods) of the gratings themselves. All the PI-FGs developed to date can mainly be divided
Chengliang Zhu, Lei Wang, Hongpu Li
doaj +1 more source
Mode Characteristics and Sensing Performance of Fiber Gratings
Journal of Harbin University of Science and Technology, 2022 Fiber gratings are special optical fibers with a periodic refractive index distribution when the refractive index of the fiber core is modulated. Both the angle and period of the gratings have an influence on the sensing properties of the fiber gratings.
ZHANG Jun-xi +3 more
doaj +1 more source
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
openaire +2 more sources
Chemical sensors based on long period fiber gratings: A review
Results in Optics, 2021 Fiber optic devices are being increasingly employed in the fields of chemical and environmental sensing due to their important features, such as high accuracy, small size, chemical inertness, remote operation and multiplexing capabilities.
Flavio Esposito
doaj +1 more source