Highly sensitive photonic crystal fiber biosensor based on titanium nitride

被引：45

作者：

Khalil, Ahmed E. ^{[1
]}

El-Saeed, Ahmed H. ^{[1
]}

Ibrahim, Mohamed A. ^{[1
]}

Hashish, Mohamed E. ^{[1
]}

Abdelmonem, Mohammed R. ^{[1
]}

Hameed, Mohamed Farhat O. ^{[1
,2
,3
]}

Azab, Mohammad Y. ^{[1
]}

Obayya, S. S. A. ^{[1
,3
]}

机构：

[1] Mansoura Univ, Fac Engn, Mansoura 35516, Egypt

[2] Univ Sci & Technol, Nanotechnol Engn Program, Zewail City Sci & Technol, Giza 12578, Egypt

[3] Zewail City Sci & Technol, Ctr Photon & Smart Mat, Giza 12578, Egypt

来源：

OPTICAL AND QUANTUM ELECTRONICS | 2018年 / 50卷 / 03期

关键词：

Optical sensing and sensors; Alternative plasmonic material; Titanium nitride; Surface plasmon resonance; Photonic crystal fibers;

D O I：

10.1007/s11082-018-1397-0

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A highly sensitive surface plasmon resonance photonic crystal fiber (PCF) biosensor based on Titanium Nitride (TiN) as a new alternative plasmonic material is proposed and analyzed. The TiN has high stability, high conductivity, and corrosion resistance which make it an ideal material for nanofabrication. The suggested biosensor is analyzed by full vectorial finite element method with perfectly matched layer as boundary conditions. In this paper, the biosensor geometrical parameters are studied to achieve high sensitivity for both polarized modes. A refractive index sensitivity of 7700 and 3600 nm/RIU for quasi-transverse electric and quasi transverse magnetic modes, respectively, are obtained. Additionally, the reported biosensor could be used for detecting an unknown analyte refractive index ranging from 1.32 to 1.34 with a high linearity. Further, the proposed biosensor structure is easy for fabrication using standard PCF fabrication current technologies.

引用

页数：12