Results 1 to 10 of about 16,371 (260)
Long Period Grating-Based Fiber Coupling to WGM Microresonators [PDF]
Micromachines, 2018 A comprehensive model for designing robust all-in-fiber microresonator-based optical sensing setups is illustrated. The investigated all-in-fiber setups allow light to selectively excite high-Q whispering gallery modes (WGMs) into optical microresonators,
Francesco Chiavaioli +6 more
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Flexible Optoelectronic Hybrid Microfiber Long‐period Grating Multimodal Sensor [PDF]
Advanced ScienceFlexible wearable biosensors have emerged as a promising tool for tracking dynamic glycemic profiles of human body in diabetes management. However, it remains a challenge to balance the shrunken device space and multiple redundant sensing arrays for ...
Zhenru Li +8 more
doaj +2 more sources
High Temperature Long Period Grating Thermo-Mechanically Written [PDF]
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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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
doaj +3 more sources
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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An Ultrasensitive Long-Period Fiber Grating-Based Refractive Index Sensor with Long Wavelengths
Sensors, 2016 The response of a novel long-period fiber grating (LPFG) with a period of 180 µm to a surrounding refractive index (RI) was investigated. The results displayed that, with the increase in RI of the surrounding media of cladding glass in the grating region,
Qiu-Shun Li +8 more
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Long Period Fiber Grating Surface Plasmon Resonance Enhanced Sensor
Guangtongxin yanjiu, 2021 In view of the common problems of fiber surface plasmon resonance sensor with weak strength, low sensitivity and low plasma excitation efficiency, this paper proposes to use the long-period fiber grating as an auxiliary platform to study the ways of ...
Zhi-wei LIU +4 more
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UV Inscription and Pressure Induced Long-Period Gratings through 3D Printed Amplitude Masks
Sensors, 2021 In this work, we demonstrate for the first time the capability to inscribe long-period gratings (LPGs) with UV radiation using simple and low cost amplitude masks fabricated with a consumer grade 3D printer.
Ricardo Oliveira +4 more
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Sensors, 2021 In this paper, we investigate modification of transmission spectra of long-period fiber grating structures with an acoustic shock front propagating along the fiber.
Oleg V. Ivanov +2 more
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Virtual long-period gratings [PDF]
Optics Letters, 2005 A theoretical prediction of a new fiber grating structure is presented. This new device is achieved when a high-birefringence fiber is heavily twisted. It behaves like a long-period grating, but its spectral response can be controlled with the input state of polarization of the light.
Jáuregui Misas, César +1 more
openaire +3 more sources