High-Resolution Fiber Optic Sensor based on Coated Linearly Chirped Bragg Grating
No Thumbnail Available
Date
2020
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier GmbH
Abstract
a fiber optic strain sensor is proposed and experimentally demonstrated using fiber Bragg grating (FBG) based interrogation scheme. Due to fast response time and better sensitivity of graphene oxide (GO) material, coated linearly chirped fiber Bragg grating (LCFBG) is used in this work. Interrogation scheme is used for the efficient strain sensing by placing LCFBG within the Sagnac loop (wavelength dependent receiver). The GO deposition is confirmed by ultraviolet–visible spectroscopy, atomic force microscopy (AFM), and field emission scanning electron micrograph (FESEM). Our proposed fiber optic strain sensor possesses better resolution, stable operation in the infra-red region. In addition, sensor demonstrates 5.25 ?? static strain and 0.645 ??/?Hz dynamic strain resolutions, respectively. © 2020 Elsevier GmbH
Description
Keywords
Composite bridges, Fiber optic sensors, Fiber optics, Fibers, Graphene, Scanning electron microscopy, Fast response time, Fiber optic strain sensor, Field emission scanning, High resolution, Linearly chirped bragg gratings, Linearly chirped fiber Bragg gratings, Stable operation, Visible spectroscopy, Fiber Bragg gratings
Citation
Optik, 2020, 212, , pp. -