Research on High Sensitivity Caused by Broken 1-D Multilayer Stack Sensor Based on the Slow Bloch Mode

Author

Liu, Yajun ; Liu, Rongxia ; Jia, Zhenhong

Author_Institution

Sch. of Electron. & Inf. Eng., Xi´´an JiaoTong Univ., Xi´´an, China

Volume

24

Issue

23

fYear

2012

Firstpage

2163

Lastpage

2165

Abstract

We propose a new porous silicon structure for the interfered 1-D photonic crystal (PhC) that constitutes a multilayer stack. The vertical multilayer stack porous silicon and the horizontal disturbed by periodical air gaps modifies the perfect 1-D multilayer stack PhC into 2-D PhC. Slow Bloch mode (SBM) is the main feature of this device. We employ rigorous coupled wave analysis to theoretically simulate SBM characteristics. Results show that the device presents higher sensitivity than the perfect 1-D PhC and is an ideal candidate for a biosensor.

Keywords

biosensors; coupled mode analysis; optical materials; optical multilayers; optical sensors; photonic crystals; porous semiconductors; silicon; 1-D photonic crystal; PhC; SBM; biosensor; broken 1-D multilayer stack sensor; periodical air gaps; porous silicon structure; rigorous coupled wave analysis; slow Bloch mode; Couplings; Nonhomogeneous media; Optical surface waves; Photonic crystals; Sensitivity; Silicon; Surface waves; Diffraction; grating; photonic crystal; surface waves;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2012.2224102

Filename

6329931