Title
Compact fiber-optic curvature sensor based on super-mode interference in a seven-core fiber
Abbreviated Journal Title
Opt. Lett.
Keywords
PHOTONIC CRYSTAL FIBER; MACH-ZEHNDER INTERFEROMETER; MULTICORE FIBER; OPTICAL-FIBER; TEMPERATURE; TAPERS; LOOP; Optics
Abstract
A compact, low loss, and highly sensitive optical fiber curvature sensor is presented. The device consists of a fewmillimeter- long piece of seven-core fiber spliced between two single-mode fibers. When the optical fiber device is kept straight, a pronounced interference pattern appears in the transmission spectrum. However, when the device is bent, a spectral shift of the interference pattern is produced, and the visibility of the interference notches changes. This allows for using either visibility or spectral shift for sensor interrogation. The dynamic range of the device can be tailored through the proper selection of the length of the seven-core fiber. The effects of temperature and refractive index of the external medium on the response of the curvature sensor are also discussed. Linear sensitivity of about 3000 nm/mm(-1) for bending was observed experimentally. (C) 2015 Optical Society of America
Journal Title
Optics Letters
Volume
40
Issue/Number
7
Publication Date
1-1-2015
Document Type
Article
Language
English
First Page
1468
Last Page
1471
WOS Identifier
ISSN
0146-9592
Recommended Citation
"Compact fiber-optic curvature sensor based on super-mode interference in a seven-core fiber" (2015). Faculty Bibliography 2010s. 6787.
https://stars.library.ucf.edu/facultybib2010/6787
Comments
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