Numerical analysis of a strip-loaded silicon rich nitride-thin film lithium niobate hybrid waveguides
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Published:2023-02-01
Issue:3
Volume:25
Page:035801
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ISSN:2040-8978
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Container-title:Journal of Optics
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language:
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Short-container-title:J. Opt.
Author:
Meetei Toijam Sunder,Son Seong-Jin,Park Byeongchan,Lee Yong-Tak,Yu Nan Ei
Abstract
Abstract
Hybrid integration of silicon rich nitride and lithium niobate on insulator (SRN-LNOI) is an emerging material platform for photonic integrated circuits (PIC). In this paper, we present a systematic numerical investigation of the mode properties of a strip-loaded SRN-LNOI hybrid waveguide at 1550 nm wavelength using the full-vectorial finite difference method. Considering the anisotropic nature of the lithium niobate (LN) crystal, the effective refractive indices of the transverse electric and transverse magnetic modes of strip-loaded SRN-LN hybrid waveguides were analyzed. The single-mode condition, zero-birefringence, effective mode area, and power distribution in terms of the geometrical parameters of the strip-loaded SRN-LN hybrid waveguide are discussed in detail. Furthermore, the optical power transmission in both straight and bent waveguides, as well as the different characteristics of the optical power confinement of the fundamental modes in the SRN and LN layers were analyzed. This study provides useful information for designing high-performance photonic devices on a hybrid SRN-LNOI platform for future PIC applications.
Funder
Vehicle AI Convergence R&D Program through the National IT Industry Promotion Agency of Korea (NIPA) funded by the Ministry of Science and ICT
Korea Evaluation Institute of Industrial Technology (KEIT) grant funded by the Korea government
National Research Foundation of Korea (NRF) grant funded by the Korean government MSIT
GIST Research Institute (GRI) Grant
Subject
Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials