Visible light thermo-optic switches using an Nb<sub>2</sub>O<sub>5</sub> waveguide
Visible-light waveguides and thermo-optic switches were fabricated and demonstrated using Nb<sub>2</sub>O<sub>5</sub>, a material with a high refractive index in the visible spectrum, to investigate its material properties and switching performance. To the best of our knowledge, this study is the first to explore these characteristics. The thermo-optic coefficient of Nb<sub>2</sub>O<sub>5</sub> was determined to be 2.27 × 10<sup>-5</sup> K<sup>-1</sup>, while the fabricated switch exhibited an extinction ratio of 6.5 dB and a response time of 77 μs. These results suggest that Nb<sub>2</sub>O<sub>5</sub> is a promising material for advancing the miniaturization of visible-light devices.
Authors
- Katsumi Nakatsuhara
- Yuya Shoji (ORCID: https://orcid.org/0000-0003-1907-5136)
- Yijie Ni
- Shun Yajima (ORCID: https://orcid.org/0000-0002-0577-7295)
- Gensai Tei
- Yoshiki Hayama
- Yuto Shinbo
Institutions
- Kanagawa Institute of Technology (JP)
Publication Details
- Journal
- Optics Express
- Published
- 2025-03-25
- DOI
- https://doi.org/10.1364/oe.557894
- Citations
- 2
- Primary Topic
- Photonic and Optical Devices
- Type
- article
- Field-Weighted Citation Impact
- 1.46