Design and modeling of long-range hybrid plasmonic waveguides

Rajib R. Ghosh; Abhijit Das; Arun Thomas; Mangesh Jaiswal; Anuj Dhawan

doi:10.1117/12.2524932

26 April 2019 Design and modeling of long-range hybrid plasmonic waveguides

Rajib R. Ghosh, Abhijit Das, Arun Thomas, Mangesh Jaiswal, Anuj Dhawan

Proceedings Volume 11031, Integrated Optics: Design, Devices, Systems, and Applications V; 110311E (2019) https://doi.org/10.1117/12.2524932
Event: SPIE Optics + Optoelectronics, 2019, Prague, Czech Republic

Abstract

In this paper, we describe the design and modeling of novel long-range hybrid plasmonic waveguides that consist of both plasmonic thin films and nano-scale structures of a high refractive index material (such as silicon), with a material of low refractive index (such as silicon di-oxide) lying in the region between the nano-scale structures and the plasmonic thin film. We have employed complex geometry of silicon nanostructures in the vicinity of a plasmonic thin film. The effective refractive index and the corresponding propagation length obtained for these plasmonic waveguides and hybrid plasmonic waveguides were obtained using a full-vector finite difference eigen mode solver. In our simulations, different structural parameters of the the hybrid plasmonic waveguides were varied, and the effect of these parameters ⎯ on the propagation length and effective mode area ⎯ was analyzed. We describe the design of novel hybrid plasmonic waveguides that have a propagation length greater than 1 mm and also have a low effective mode area. The waveguides being proposed by us can be fabricated with relative ease using the standard lithography processes.

Citation Download Citation

Rajib R. Ghosh, Abhijit Das, Arun Thomas, Mangesh Jaiswal, and Anuj Dhawan "Design and modeling of long-range hybrid plasmonic waveguides ", Proc. SPIE 11031, Integrated Optics: Design, Devices, Systems, and Applications V, 110311E (26 April 2019); https://doi.org/10.1117/12.2524932

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