Hybrid Photonic Crystal-Surface Plasmon Polariton Waveguiding System for On-Chip Sensing Applications

Proceedings

Jakoby, Bernhard¹  Abasahl, Banafsheh²  Grille, Thomas³  Jannesari, Reyhaneh⁴ 

[1] Author to whom correspondence should be addressed.;Carinthian Tech Research AG, Europastrasse 12, Villach 9524, Austria;Infineon Technologies Austria AG, 9500 Villach, Austria;Institute for Microelectronics and Microsensors, Johannes Kepler University, 4040 Linz, Austria

关键词: photonic crystal waveguide;    surface plasmon pollariton;    hybrid system;    sensor;   

DOI  :  10.3390/proceedings2130864

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

In this paper, a hybrid optical guiding system based on low group velocity offered by photonic crystal (PhC) waveguides and vertical confinement as well as high field enhancement of. Surface lasmon polaritons (SPP) is proposed. We show that for efficient sensing, conventional two-dimensional PhC waveguides with finite height require a high aspect ratio in the order of 30 in order to efficiently confine the guiding mode. The fabrication of devices with such a high aspect ratio is considered too challenging and inefficient for mass production. By combining a PhC waveguide and SPPs, the proposed system efficiently confines the optical mode vertically while benefiting from the lateral confinement enabled by PhC structures. As a result, the required aspect ratio drops to about 4 making the fabrication in large scale feasible. This design provides strong light-matter interaction within small dimensions, which is beneficial for miniaturizing on-chip photonic sensors.

【 授权许可】

CC BY