
Proceedings Paper
High-sensitivity Mach-Zehnder interferometric refractive index sensor based on two different ultra-abrupt tapersFormat | Member Price | Non-Member Price |
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Paper Abstract
A high-sensitivity Mach-Zehnder(MZ) interferometric refractive index(RI) sensor based on two different ultra-abrupt
tapers is proposed and demonstrated experimentally. The whole fabrication process is relatively simple. One taper is
fabricated by the fusion-splicing method and the ratio of the waist diameter to the taper length is 1:1. The other taper is
fabricated by CO2 laser irradiation with a ratio around 1:10. According to the experimental results, the spectral loss of
the proposed MZ interferometric sensor has a linear response to the external RI change with a ultrahigh sensitivity of
-412.02138 dB/RIU(refractive index unit) in the range of 1.3505-1.3684. The sensor has the potential application for RI
measurement in chemical or biochemical sensing fields due to its low cost, simple structure and extremely high
sensitivity.
Paper Details
Date Published: 19 February 2015
PDF: 6 pages
Proc. SPIE 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014), 94491X (19 February 2015); doi: 10.1117/12.2074872
Published in SPIE Proceedings Vol. 9449:
The International Conference on Photonics and Optical Engineering (icPOE 2014)
Ailing Tian; Anand Asundi; Weiguo Liu; Chunmin Zhang, Editor(s)
PDF: 6 pages
Proc. SPIE 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014), 94491X (19 February 2015); doi: 10.1117/12.2074872
Show Author Affiliations
Sumei Wang, Beijing Institute of Technology (China)
Published in SPIE Proceedings Vol. 9449:
The International Conference on Photonics and Optical Engineering (icPOE 2014)
Ailing Tian; Anand Asundi; Weiguo Liu; Chunmin Zhang, Editor(s)
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