Results 11 to 20 of about 16,245 (165)
Experimental validation of a reflective long period grating design methodology
Results in Optics, 2022 In this work, we present an experimental demonstration of our previously published modeling work on reflective long period grating (LPG). To provide the practical realization of the modeling work, we coat a long segment of fiber both in the tail length ...
Sohel Rana +2 more
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Helical Long Period Fiber Grating Inscribed in Elliptical Core Polarization-Maintaining Fiber
IEEE Access, 2021 A high-quality helical long period fiber grating (HLPFG) in elliptical core polarization-maintaining fiber (PMF) was experimentally demonstrated by using the hydrogen-oxygen flame heating technique.
Cailing Fu +3 more
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Radiation Effects on Long Period Fiber Gratings: A Review [PDF]
Sensors, 2020 Over the last years, fiber optic sensors have been increasingly applied for applications in environments with a high level of radiation as an alternative to electrical sensors, due to their: high immunity, high multiplexing and long-distance monitoring capability.
Flavio Esposito +3 more
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High Temperature Long Period Grating Thermo-Mechanically Written
Sensors, 2009 An optical fiber transducer able to work in high temperature environments is experimentally demonstrated in the laboratory. It is based on a permanent long period grating (LPG) written using a new technique based on a thermo-mechanical approach.
Antonio Quintela +2 more
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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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Fibers, 2017 The manufacturing and spectral features of different types of long period fiber gratings (LPFGs), ranging from phase-shifted, turn-around point, and internally tilted gratings, to pseudo-random gratings, are described and discussed in detail.
Francesco Chiavaioli +2 more
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Long Period Gratings Formed in Depressed Cladding Fibres [PDF]
Bragg Gratings, Photosensitivity, and Poling in Glass Fibers and Waveguides: Applications and Fundamentals, 1997 There has been a significant interest in long period gratings, primarily due to their applications in gain-flattened erbium doped fibre amplifiers [1]. Up till now, cladding modes supported by the glass-air interface of an optical fibre have been used in a forward mode coupling scheme involving also the guided fundamental mode of the optical fibre ...
Dong, L., Reekie, L., Cruz, J.L.
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Fiber Bragg Grating Bonding Characterization under Long-Period Cyclic Loading
Photonics, 2023 The Smart Landing Gear system to be developed in the framework of the ANGELA project provides the strain measurements on landing gear structure at landings, and this system should be maintained efficiently under operational conditions.
Angela Brindisi +7 more
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Long-period gratings in chalcogenide fibers
Optics Express, 2006 We report the first demonstration of long period gratings in single mode As(2)Se(3) chalcogenide glass fiber. The grating is implemented by pressing a threaded rod against a short piece of fiber. Its strength can be tuned over a 25 dB range, has high repeatability, and is fully reversible.
Dominik, Pudo +2 more
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Long-Period Fiber Grating Sensors for Chemical and Biomedical Applications
Sensors, 2023 Optical fiber biosensors (OFBS) are being increasingly proposed due to their intrinsic advantages over conventional sensors, including their compactness, potential remote control and immunity to electromagnetic interference.
Jintao Cai, Yulei Liu, Xuewen Shu
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