期刊
NATURE COMMUNICATIONS
卷 10, 期 -, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/s41467-019-09724-7
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资金
- EU-project PLASMOfab [688166]
- ERC PLASILOR [670478]
- NSF [DMR-1303080]
- AFOSR [FA9550-15-1-0319]
Coherent optical communications provides the largest data transmission capacity with the highest spectral efficiency and therefore has a remarkable potential to satisfy today's ever-growing bandwidth demands. It relies on so-called in-phase/quadrature (IQ) electro-optic modulators that encode information on both the amplitude and the phase of light. Ideally, such IQ modulators should offer energy-efficient operation and a most compact footprint, which would allow high-density integration and high spatial parallelism. Here, we present compact IQ modulators with an active section occupying a footprint of 4 x 25 mu m x 3 mu m, fabricated on the silicon platform and operated with sub-1-V driving electronics. The devices exhibit low electrical energy consumptions of only 0.07 fJ bit(-1) at 50 Gbit s(-1), 0.3 fJ bit(-1) at 200 Gbit s(-1), and 2 fJ bit(-1) at 400 Gbit s(-1). Such IQ modulators may pave the way for application of IQ modulators in long-haul and short-haul communications alike.
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