Efficient coupling of light from dielectric to HIMI plasmonic waveguide

Micro & nano letters

article

Virendra Patel¹  Kritarth Srivastava¹  Prateeksha Sharma¹  V. Dinesh Kumar¹ 

[1] Discipline of Electronics and Communication Engineering, PDPM Indian Institute of Information Technology

关键词: optical losses;    optical couplers;    integrated optics;    plasmonics;    optical waveguides;    light reflection;    light propagation;    light transmission;    conventional dielectric waveguide;    high transmission efficiency;    size 1.0 mum;    size 274.0 mum;    ultrashort tapered length;    hybrid insulator-metal-insulator plasmonic waveguide;    hybrid plasmonic tapered coupler;    propagation length;    HIMI plasmonic waveguide;    hybrid waveguide coupler;    low dielectric regions;    minimal mode propagation losses;    return loss;    maximum transmittance;    tapered coupling mechanism;    reflection losses;   

DOI  :  10.1049/mnl.2018.5795

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

This is the first report on the investigation of a hybrid plasmonic tapered coupler injecting light efficiently from conventional dielectric waveguide to a hybrid insulator–metal–insulator (HIMI) plasmonic waveguide. The proposed structure gives high transmission efficiency and suppresses the reflection losses significantly. With this tapered coupling mechanism, maximum transmittance and return loss of 98% and 26 dB have been observed, respectively. The coupler also offers very good propagation length (274 μm) along with minimal mode propagation losses (0.016 dB/µm). Apart from that, it offers decent confinement of light in low dielectric regions up to 32%. The proposed structure is designed in an ultra-short tapered length of 1.0 µm, and the entire structure occupies a footprint area of 1.4 × 2.4 μm 2 . Proposed hybrid waveguide coupler could be useful for several chip scale applications.

【 授权许可】

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