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Ultra-compact lithium niobate photonic chip for high-capacity and energy-efficient wavelength-division-multiplexing transmitters
- Source :
- Light: Advanced Manufacturing, Vol 4, Iss 2, Pp 1-10 (2023)
- Publication Year :
- 2023
- Publisher :
- Light Publishing Group, 2023.
-
Abstract
- 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.
Details
- Language :
- English
- ISSN :
- 26899620
- Volume :
- 4
- Issue :
- 2
- Database :
- Directory of Open Access Journals
- Journal :
- Light: Advanced Manufacturing
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.663f9bd462cb40b2ad230d2c264a8df6
- Document Type :
- article
- Full Text :
- https://doi.org/10.37188/lam.2023.013