Single-Mode Condition of Chalcogenide Glass Channel Waveguides for Integrated Optical Devices Operated across the Astronomical N-Band

Takashi YASUI  Jun-ichiro SUGISAKA  Koichi HIRAYAMA  

IEICE TRANSACTIONS on Electronics   Vol.E104-C   No.8   pp.386-389
Publication Date: 2021/08/01
Publicized: 2021/01/13
Online ISSN: 1745-1353
DOI: 10.1587/transele.2020ECS6023
Type of Manuscript: BRIEF PAPER
Category: Optoelectronics
optical waveguides,  mid-infrared spectral range,  chalcogenide glass,  astrophotonics,  finite-element method,  

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In this study, we conduct guided mode analyses for chalcogenide glass channel waveguides using As2Se3 core and As2S3 lower cladding to determine their single-mode conditions across the astronomical N-band (8-12µm). The results reveal that a single-mode operation over the band can be achieved by choosing a suitable core-thickness.