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Proceedings Paper

Tunable phase-shifted FBG based on an in-grating bubble
Author(s): Changrui Liao; Lei Xu; Yiping Wang; D. N. Wang; Qiao Wang; Zhengyong Li; Xiaoyong Zhong; Jiangtao Zhou; Yingjie Liu
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Paper Abstract

We present a new type of phase-shifted FBGs based on an in-grating bubble fabricated by femtosecond laser ablation together with fusion splicing technique. A micro-channel vertically crossing the bubble is drilled by femtosecond laser to allow liquid to flow in or out. By filling different refractive index liquid into the bubble, the phase-shift peak is found to experience a linear red shift with the increase of refractive index. Such a PS-FBG could be used to develop a promising tunable optical filter and sensor.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915778 (2 June 2014); doi: 10.1117/12.2059446
Show Author Affiliations
Changrui Liao, Shenzhen Univ. (China)
Lei Xu, Shenzhen Institute of Information Technology (China)
Yiping Wang, Shenzhen Univ. (China)
D. N. Wang, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Qiao Wang, Shenzhen Univ. (China)
Zhengyong Li, Shenzhen Univ. (China)
Xiaoyong Zhong, Shenzhen Univ. (China)
Jiangtao Zhou, Shenzhen Univ. (China)
Yingjie Liu, Shenzhen Univ. (China)

Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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