Optical fiber-Ta2O5 waveguide coupler covered with hydrophobic zeolite film for vapor sensing

被引：9

作者：

Babeva, T. ^{[1
]}

Andreev, A. ^{[2
]}

Grand, J. ^{[3
]}

Vasileva, M. ^{[1
]}

Karakoleva, E. ^{[2
]}

Zafirova, B. S. ^{[2
]}

Georgieva, B. ^{[1
]}

Koprinarova, J. ^{[2
]}

Mintova, S. ^{[3
]}

机构：

[1] Bulgarian Acad Sci, Inst Opt Mat & Technol Acad J Malinowski, Acad G Bonchev Str,Bl 109, Sofia 1113, Bulgaria

[2] Bulgarian Acad Sci, Inst Solid State Phys, 72 Tsarigradsko Chaussee, Sofia 1784, Bulgaria

[3] Normandie Univ, ENSICAEN, CNRS, Lab Catalyse & Spectrochim, 6 Blvd Marechal Juin, F-14050 Caen, France

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2017年 / 248卷

关键词：

Side-polished optical fiber; Distributed coupler; Zeolite film; Chemical sensors; Optical sensing; FIBER GRATING SENSOR; INDEX;

D O I：

10.1016/j.snb.2017.03.157

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Coupler comprising side-polished optical fiber and tantalum pentoxide (Ta2O5) waveguide coated with 330 nm hydrophobic MFI-type zeolite films was utilized as chemical sensor for acetone vapors. The thickness of the zeolite films was selected through theoretical modeling of the resonant wavelength shift in order to achieve the highest possible sensitivity. The spectral positions of the resonances were determined through solving of the characteristics equations for the coupled waveguides and finding their mode effective refractive indices. The optical quality of the coupler surface, that is responsible for the proper operation of the device, was controlled through 3D optical imaging prior to and after deposition of the zeolite films. The application of side-polished optical fiber-Ta2O5 waveguide coupler covered with hydrophobic zeolite film for acetone vapor sensing was demonstrated and discussed. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：359 / 366

页数：8

共 33 条

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