Sensitivity improvement of photonic crystal refractive index sensor using porous silicon nano rods

被引：3

作者：

Mehta, Shweta ^{[1
]}

Vankalkunti, Suchitra ^{[1
]}

Kachhap, Pawan Kumar ^{[1
]}

Gautam, Prakash Ratan ^{[1
]}

Singh, Mandeep ^{[1
,2
,3
]}

机构：

[1] Natl Inst Technol Karnataka, Dept E&C Engg, Appl Photon Lab, Surathkal 575025, Karnataka, India

[2] Indian Inst Sci, Dept Elect Commun Engg, Bangalore 560012, Karnataka, India

[3] Natl Inst Technol Karnataka, Dept E&C Engg, Surathkal 575025, Karnataka, India

来源：

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2023年 / 165卷

关键词：

Optical sensors; Photonic crystals; Porous silicon; Photonic band gap; Integrated optics; WAVE-GUIDE; DESIGN; VAPOR; METHANOL; SPLITTERS; EXPOSURE;

D O I：

10.1016/j.mssp.2023.107687

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：

This work proposes a photonic crystal refractive-index sensor for detecting volatile organic compounds (VOC). Two sensor designs are analyzed with Y-splitter photonic crystal waveguide using the finite-difference timedomain (FDTD) method. Also, simultaneous monitoring of two different analytes is possible across the arms of the Y-splitter. The porous silicon (p-Si) rods with a porosity of 25% are used to create a variable refractive index sensing region, which induces a relative shift in the resonant wavelength of the traveling mode. The response at the output ports is monitored in terms of transmittance power versus wavelength plot. The numerical simulations confirm -195.83 nm/RIU sensitivity and -24.482 RIU- 1 figure-of-merit in the presence of hazardous alcohols.

引用

页数：6

共 32 条

[1] High sensitive photonic crystal ring resonator structure applicable for optical integrated circuits [J].