期刊
OPTICS EXPRESS
卷 26, 期 16, 页码 19885-19906出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.26.019885
关键词
-
类别
资金
- Alfried Krupp von Bohlen und Halbach Foundation
- European Research Council (ERC) [280145]
- Robert Bosch GmbH (Renningen, Germany)
- Karlsruhe School of Optics and Photonics (KSOP)
Waveguide-based biochemical sensors exploit detection of target molecules that bind specifically to a functionalized waveguide surface. For optimum sensitivity, the waveguide should be designed to mediate maximum influence of the surface layer on the effective refractive index of the guided mode. In this paper, we define a surface sensitivity metric which quantifies this impact and which allows to broadly compare different waveguide types and integration platforms. Focusing on silicon nitride and silicon-on-insulator (SOI) as the most common material systems, we systematically analyze and optimize a variety of waveguide types, comprising simple strips, slot and double slot structures, as well as sub-wavelength gratings (SWG). Comparing the highest achievable surface sensitivities, we provide universal design guidelines and physically interpret the observed trends and limitations. Our findings allow to select the appropriate WG platform and to optimize sensitivity for a given measurement task. (c) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据