| Autor: |
Hongxuan Liu, Bingcheng Pan, Yishu Huang, Jianghao He, Ming Zhang, Zejie Yu, Liu Liu, Yaocheng Shi, Daoxin Dai |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Light: Advanced Manufacturing, Vol 4, Iss 2, Pp 1-10 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2689-9620 |
| DOI: |
10.37188/lam.2023.013 |
| Popis: |
Recently, high-performance thin-film lithium niobate optical modulators have emerged that, together with advanced multiplexing technologies, are highly expected to satisfy the ever-growing demand for high-capacity optical interconnects utilizing multiple channels. Accordingly, in this study, a compact lithium-niobate-on-insulator (LNOI) photonic chip was adopted to establish four-channel wavelength-division-multiplexing (WDM) transmitters, comprising four optical modulators based on ultracompact 2 × 2 Fabry-Perot cavities and a four-channel WDM filter based on multimode waveguide gratings. The fabricated chip with four wavelength channels has a total footprint as compact as 0.3 × 2.8 mm2, and exhibits an excess loss of ~0.8 dB as well as low inter-channel crosstalk of < –22 dB. Using this LNOI photonic chip, high-capacity data transmissions of 320 Gbps (4 × 80 Gbps) on-off-keying signals and 400 Gbps (4 × 100 Gbps) four-level pulse amplitude signals were successfully realized with the ultra-low power consumption of 11.9 fJ/bit. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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