Results 1 to 10 of about 5,314 (159)

Angularly Cascaded Long-Period Fiber Grating for Curvature and Temperature Detection [PDF]

open access: yesSensors, 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
doaj   +2 more sources

Long-Period Fiber Grating Sensors for Chemical and Biomedical Applications [PDF]

open access: yesSensors, 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
doaj   +2 more sources

High-Order Modes Micro-Knot Excited by a Long-Period Fiber Grating [PDF]

open access: yesSensors, 2017
We suggest a fiber micro-knot fabricated on a long-period fiber grating. The long-period fiber grating excites high-order modes into the micro-knot and transfers the output back to the Gaussian mode.
Shir Shahal   +2 more
doaj   +2 more sources

Feasibility of Fiber Bragg Grating and Long-Period Fiber Grating Sensors under Different Environmental Conditions

open access: yesSensors, 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
doaj   +3 more sources

Application of Robust, Packaged Long-Period Fiber Grating for Strain Measurement [PDF]

open access: yesMicromachines, 2016
This paper proposes an optical fiber strain sensor based on packaged long-period fiber gratings (PLPFG) which is fabricated by the micro-electromechanical systems (MEMS) process and packaged with poly-dimethylsiloxane (PDMS) polymer materials.
Ke-Ping Ma   +4 more
doaj   +2 more sources

An Ultrasensitive Long-Period Fiber Grating-Based Refractive Index Sensor with Long Wavelengths [PDF]

open access: yesSensors, 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
doaj   +2 more sources

Long Period Grating-Based Fiber Coupling to WGM Microresonators

open access: yesMicromachines, 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
doaj   +3 more sources

Simultaneous generation of first- to fourth-order OAM modes based on a cascaded preset-twist long-period fiber grating [PDF]

open access: yesNanophotonics
We propose and demonstrate the simulation and fabrication of an all-fiber orbital angular momentum (OAM) mode converter capable of generating first- to fourth-order modes simultaneously, which is realized by inscribing a cascaded preset-twist long-period
Chang Wenzhe   +6 more
doaj   +2 more sources

Long-Period Fiber Grating Sensor Based on a Conductive Polymer Functional Layer. [PDF]

open access: yesPolymers (Basel), 2020
Hsu CY   +6 more
europepmc   +2 more sources

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