Fabrication of a 3D mode size converter for efficient edge coupling in photonic integrated circuits
We demonstrate efficient edge couplers by fabricating a 3D mode size converter on a lithium niobate-on-insulator photonic platform. The 3D mode size converter is fabricated using an etching process that employs a Si external mask to provide height variation and adjust the width variation through tapering patterns via lithography. The measured edge coupling efficiency with a 3D mode size converter was approximately 1.16 dB/facet for the TE mode and approximately 0.71 dB/facet for the TM mode at a wavelength of 1550 nm using lensed fibers.
Authors
- Hyeong‐Soon Jang (ORCID: https://orcid.org/0000-0001-9639-737X)
- Hansuek Lee (ORCID: https://orcid.org/0000-0002-0748-7662)
- Hojoong Jung (ORCID: https://orcid.org/0000-0001-7059-1713)
- Sang-Wook Han (ORCID: https://orcid.org/0000-0002-4098-3326)
- Hyounghan Kwon (ORCID: https://orcid.org/0000-0002-9257-687X)
- Sangin Kim (ORCID: https://orcid.org/0000-0002-2865-5709)
- How Yuan Hwang (ORCID: https://orcid.org/0000-0002-8536-0974)
- Min‐Kyo Seo (ORCID: https://orcid.org/0000-0003-0618-3955)
- Hyungjun Heo (ORCID: https://orcid.org/0009-0005-3406-2423)
Institutions
- Korea Advanced Institute of Science and Technology (KR)
- Ajou University (KR)
- Korea Institute of Science and Technology (KR)
- Korea University of Science and Technology (KR)
Publication Details
- Journal
- Optics Express
- Published
- 2025-02-03
- DOI
- https://doi.org/10.1364/oe.541701
- Citations
- 5
- Primary Topic
- Photonic and Optical Devices
- Type
- article
- Field-Weighted Citation Impact
- 3.65
Funders
- Korea Institute of Science and Technology
- National Research Foundation of Korea
- National Research Council of Science and Technology
- Institute for Information and Communications Technology Promotion