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Proceedings Paper

Wavelength-swept lasers and their application to fiber optic sensors
Author(s): Min Yong Jeon; Myeong Ock Ko; Byeong Kwon Choi; Yong Seok Kwon
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Paper Abstract

The wavelength swept laser (WSL) is a promising optical source in optical coherence tomography, optical fiber sensor, and optical beat source generation. It is demonstrated by employing a narrowband wavelength-scanning filter, such as a fast rotating polygonal-scanner-filter, a diffraction grating on a galvo-scan mirror, or a fiber Fabry-Perot tunable filter (FFP-TF). In this manuscript, we present our researches on the dynamic fiber-optic sensors. Two kinds of WSLs are used to demonstrate the dynamic measurement in the fiber-optic sensors. One is the WSL using a polygon-scanner-based wavelength filter and the other is the Fourier domain mode-locked (FDML) WSL using a FFP-TF. The dynamic fiber Bragg grating (FBG) sensor interrogation up to 2 kHz by using the WSL with a polygonscanner- based wavelength filter is reported. And by using the FDML WSL with a FFP-TF, we demonstrate a resonance FBG sensor interrogation. As another application of the WSL, we successfully measure a dynamic modulation frequency of the applied electric field using a nematic liquid crystal Fabry-Perot etalon.

Paper Details

Date Published: 24 October 2014
PDF: 8 pages
Proc. SPIE 9270, Optoelectronic Devices and Integration V, 92700R (24 October 2014); doi: 10.1117/12.2064173
Show Author Affiliations
Min Yong Jeon, Chungnam National Univ. (Korea, Republic of)
Myeong Ock Ko, Chungnam National Univ. (Korea, Republic of)
Byeong Kwon Choi, Chungnam National Univ. (Korea, Republic of)
Yong Seok Kwon, Chungnam National Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 9270:
Optoelectronic Devices and Integration V
Xuping Zhang; Hai Ming; Changyuan Yu, Editor(s)

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