Investigation of Bragg gratings in planar hybrid metal–insulator–metal plasmonic waveguide using graded profile

Micro & nano letters

article

Kritarth Srivastava¹  Sindhura Chitimireddy¹  Prateeksha Sharma¹  Dinesh Kumar Vishwakarma¹ 

[1] Electronics & Communication Department, Indian Institute of Information Technology

关键词: Bragg gratings;    plasmonics;    MIM devices;    optical planar waveguides;    light transmission;    graded profile;    hybrid plasmonics;    parabolic profiles;    rectangular profiles;    Bragg grating structure;    planar hybrid metal-insulator-metal plasmonic waveguide;    integrated components;    width modulations;    triangular profiles;    compact track length;    defect length;    resonance wavelength;    transmission characteristics;    size 3.48 mum;    size 168.0 nm;    size 140.0 nm;    wavelength 1550.0 nm;   

DOI  :  10.1049/mnl.2019.0201

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

The design of integrated components using hybrid plasmonics is attracting a widespread interest in the recent years. This work proposes a consistent approach to design Bragg gratings employing the concept of graded profile in a planar hybrid metal–insulator–metal plasmonic waveguide. A comparative study of various width modulations such as triangular, parabolic and rectangular profiles is presented. The most striking observation is that Bragg gratings with parabolic profile offer best performance in terms of compact track length (3.48 μm), wide stopband (168 nm) and good transmission characteristics with fewer side lobes. Additionally, a nanocavity analysis is performed by introducing a defect length of 140 nm in the Bragg grating structure with parabolic profile. A peak transmission of 89% is observed at the resonance wavelength of 1550 nm.

【 授权许可】

CC BY|CC BY-ND|CC BY-NC|CC BY-NC-ND