Chen, Pengcheng, Shu, Xuewen, Cao, Hanyuan and Sugden, Kate (2017). Ultra-sensitive refractive index sensor based on extremely simple femtosecond-laser-induced structure. Optics Letters, 42 (6), pp. 1157-1160.
Abstract
We demonstrate here an extremely simple, compact and robust RI probe sensor based on a femtosecond-laser induced refractive-index-modified-dot (RIMD) fabricated near the end face of a single mode fiber. The RIMD and the fiber end face form a Fabry-Perot interferometer, which is highly sensitive to surrounding RI. The fabrication process of the RIMD involves only one step and takes ~0.1s, which is extremely short compared with other techniques. The proposed sensor exhibits an ultra-high sensitivity of ~2523.2 dB/RIU at an RI of 1.435, which is 1-2 orders of magnitude higher than that of the existing intensity-modulated RI sensors. Moreover, the proposed sensor has the distinct advantages of compact size (~50 µm), easy fabrication and no temperature cross-sensitivity. The advantages of the device make it a promising candidate for applications in designing highly sensitive sensors in biochemical and environmental measurement field.
Publication DOI: | https://doi.org/10.1364/OL.42.001157 |
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Divisions: | College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT) |
Additional Information: | © 2017 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited. |
Uncontrolled Keywords: | fiber optics sensors ,microstructure fabrication,interferometry,Fabry-Perot,all-optical devices,Atomic and Molecular Physics, and Optics |
Publication ISSN: | 1539-4794 |
Last Modified: | 02 Dec 2024 08:21 |
Date Deposited: | 07 Mar 2017 10:10 |
Full Text Link: | |
Related URLs: |
http://www.scop ... tnerID=8YFLogxK
(Scopus URL) |
PURE Output Type: | Article |
Published Date: | 2017-03-15 |
Published Online Date: | 2017-03-13 |
Accepted Date: | 2017-02-20 |
Submitted Date: | 2017-01-11 |
Authors: |
Chen, Pengcheng
Shu, Xuewen Cao, Hanyuan Sugden, Kate ( 0000-0001-6323-1082) |