Single mode tapered fiber-optic interferometer based refractive index sensor and its application to protein sensing

被引：144

作者：

Yadav, T. K. ^{[1
]}

Narayanaswamy, R. ^{[2
]}

Abu Bakar, M. H. ^{[1
]}

Kamil, Y. Mustapha ^{[1
]}

Mahdi, M. A. ^{[1
]}

机构：

[1] Univ Putra Malaysia, Fac Engn, Wireless & Photon Networks Res Ctr, Upm Serdang 43400, Selangor, Malaysia

[2] Univ Putra Malaysia, Inst Biosci, Lab Nat Prod, Upm Serdang 43400, Selangor, Malaysia

来源：

OPTICS EXPRESS | 2014年 / 22卷 / 19期

关键词：

PHOTONIC CRYSTAL FIBER; REFRACTOMETER; TEMPERATURE; SENSITIVITY; MICROFIBER; DEVICES; STRAIN;

D O I：

10.1364/OE.22.022802

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate refractive index sensors based on single mode tapered fiber and its application as a biosensor. We utilize this tapered fiber optic biosensor, operating at 1550 nm, for the detection of protein (gelatin) concentration in water. The sensor is based on the spectroscopy of mode coupling based on core modes-fiber cladding modes excited by the fundamental core mode of an optical fiber when it transitions into tapered regions from untapered regions. The changes are determined from the wavelength shift of the transmission spectrum. The proposed fiber sensor has sensitivity of refractive index around 1500 nm/RIU and for protein concentration detection, its highest sensitivity is 2.42141 nm/% W/V. (C) 2014 Optical Society of America

引用

页码：22802 / 22807

页数：6

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