Modal properties of a strip-loaded horizontal slot waveguide

IF 1.9 4区物理与天体物理 Q3 OPTICS Journal of the European Optical Society-Rapid Publications Pub Date : 2017-11-21 DOI:10.1186/s41476-017-0065-5

Ségolène Pélisset, Janne Laukkanen, Markku Kuittinen, Seppo Honkanen, Matthieu Roussey

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引用次数: 9

Abstract

Channel waveguides have been developed for years to comply with the need for smaller footprint and better integration in photonics circuits. However, they are still suffering from fabrication complexity and optical losses. These two limitations can be addressed by combining two types of channel waveguides, namely strip-loaded and slot waveguide.

We present a systematic study of the geometrical parameters of a strip-loaded horizontal slot waveguide and their influence on the characteristics of the device. Simulations and experiments are carried out to understand the behavior of the electromagnetic field inside such a waveguide. In particular, the influence of the high and low refractive index layers and the loading-strip on the key characteristics of the structure, i.e., the confinement factor and the effective index, are investigated theoretically and compared with experimental values.

The main properties of this waveguide platform are a low lateral index contrast, a high vertical field confinement, and low-propagation losses (1.4 dB/cm).

Our results show that this platform is highly versatile, easy to fabricate and low-losses. We also show that the geometry of the mode can be tuned to suit the application.

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条形加载水平槽波导的模态特性

通道波导已经发展了多年，以满足更小的占地面积和更好的集成在光子电路的需要。然而，它们仍然受到制造复杂性和光学损耗的困扰。这两个限制可以通过结合两种类型的通道波导来解决，即带加载波导和槽波导。本文系统地研究了条带加载水平槽波导的几何参数及其对器件特性的影响。通过仿真和实验来了解这种波导内部电磁场的行为。特别地，研究了高、低折射率层和加载条对结构关键特性的影响，即约束系数和有效折射率，并与实验值进行了比较。该波导平台的主要特性是低横向折射率对比度，高垂直场约束和低传播损耗(1.4 dB/cm)。结果表明，该平台具有通用性强、易制作、低损耗等特点。我们还展示了可以调整模式的几何形状以适应应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the European Optical Society-Rapid Publications 物理-光学

CiteScore

2.40

自引率

0.00%

发文量

审稿时长

5 weeks

期刊介绍： Rapid progress in optics and photonics has broadened its application enormously into many branches, including information and communication technology, security, sensing, bio- and medical sciences, healthcare and chemistry. Recent achievements in other sciences have allowed continual discovery of new natural mysteries and formulation of challenging goals for optics that require further development of modern concepts and running fundamental research. The Journal of the European Optical Society – Rapid Publications (JEOS:RP) aims to tackle all of the aforementioned points in the form of prompt, scientific, high-quality communications that report on the latest findings. It presents emerging technologies and outlining strategic goals in optics and photonics. The journal covers both fundamental and applied topics, including but not limited to: Classical and quantum optics Light/matter interaction Optical communication Micro- and nanooptics Nonlinear optical phenomena Optical materials Optical metrology Optical spectroscopy Colour research Nano and metamaterials Modern photonics technology Optical engineering, design and instrumentation Optical applications in bio-physics and medicine Interdisciplinary fields using photonics, such as in energy, climate change and cultural heritage The journal aims to provide readers with recent and important achievements in optics/photonics and, as its name suggests, it strives for the shortest possible publication time.