Investigation of a New Waveguide Structure Based on Negative Index Material for Optoelectronic Applications

• 作者: Bouchra Mokhtari Mohammed Musa Shabat Nour El Houda Hissi Noureddine Cherkaoui Eddeqaqi Saida Bahsine
• 来源期刊: 光学与光子学期刊(英文)
• 学科: 数学
• 关键词: NEGATIVE Index Material NONLINEARITY FERRITE Substrate WAVEGUIDE DISPERSION Relation Non-Reciprocal Behavior
• 年，卷（期）: 2017,（7）
• 页码范围: 123-132
• 页数: 10页
• 分类号: O1

摘要

In this work, a waveguide structure consisting of a new artificial negative index material (NIM) surrounded by a nonlinear cover and a ferrite (YIG) substrate has been designed and investigated. We apply the boundary conditions and impose the condition of negative effective permeability of the ferrite slab to derive the dispersion relation related to the proposed structure. The NIM permittivity and permeability are not constant and depend on the operating frequency. The dispersion properties of the nonlinear electromagnetic surface waves (NEM) are analyzed and the associated propagation index is calculated. Results show that the dispersion could be tuned and controlled by selecting the NIM film thickness and the film-cover interface nonlinearity. The proposed structure is supporting unusual types of NEM surface waves having a non-reciprocal behavior widely used in designing optoelectronic devices.