Periodically Poled Lithium-niobate-based Wavelength Converters for Waveband Extension to U-Band and Beyond
We developed periodically poled lithium niobate (PPLN)-based wavelength converters for U-band expansion, achieving 3-dB converted gain flatness and 6-dB noise figure for full U-band expansion. The expanded waveband is covered from 1624.23 to 1675.99 nm. A converted 1.2-Tbps/ch. wavelength-division-multiplexing signal was successfully transmitted over 100-km G.654.E fiber. By changing the PPLN temperature parameters of the same converters, the conversion bandwidth can be shifted to longer wavelengths beyond the U-band, which corresponds to 1675.99–1719.24 nm. In this situation, we demonstrated the extensibility beyond the U-band up to 1719 nm.
Authors
- Munehiko Nagatani (ORCID: https://orcid.org/0000-0003-2744-3058)
- Hitoshi Wakita (ORCID: https://orcid.org/0000-0001-9732-7111)
- Hiroshi Yamazaki (ORCID: https://orcid.org/0000-0001-9434-2957)
- Shimpei Shimizu (ORCID: https://orcid.org/0000-0002-4687-8092)
- Masanori Nakamura (ORCID: https://orcid.org/0000-0003-1145-8036)
- Koji Enbutsu (ORCID: https://orcid.org/0000-0003-2462-0987)
- Takahiro Kashiwazaki (ORCID: https://orcid.org/0000-0002-4601-047X)
- Masashi Abe (ORCID: https://orcid.org/0000-0002-7841-0304)
- Yuta Shiratori (ORCID: https://orcid.org/0000-0001-8074-455X)
- Takayuki Kobayashi (ORCID: https://orcid.org/0000-0001-5523-2982)
- Fukutaro Hamaoka (ORCID: https://orcid.org/0000-0003-4039-1862)
- Takushi Kazama (ORCID: https://orcid.org/0000-0002-1000-8423)
- Takeshi Umeki (ORCID: https://orcid.org/0000-0002-5787-5911)
- Shunya Konno (ORCID: https://orcid.org/0000-0001-5805-5029)
- Yutaka Miyamoto
- Hiroyuki Takahashi (ORCID: https://orcid.org/0000-0002-2409-1475)
- Akira Kawai (ORCID: https://orcid.org/0000-0002-1040-3706)
Institutions
- NTT (Japan) (JP)
Publication Details
- Journal
- Journal of Lightwave Technology
- Published
- 2025-04-23
- DOI
- https://doi.org/10.1109/jlt.2025.3563899
- Citations
- 3
- Primary Topic
- Photonic and Optical Devices
- Type
- article
- Field-Weighted Citation Impact
- 2.19