Journal
SCIENTIFIC REPORTS
Volume 6, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep22301
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Funding
- NSF [ECCS 1307514]
- GOALI program
- Department of Defense (DoD)
- United States Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000]
- Air Force Research Laboratory
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1307514] Funding Source: National Science Foundation
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We demonstrate a photonic waveguide technology based on a two-material core, in which light is controllably and repeatedly transferred back and forth between sub-micron thickness crystalline layers of Si and LN bonded to one another, where the former is patterned and the latter is not. In this way, the foundry-based wafer-scale fabrication technology for silicon photonics can be leveraged to form lithium-niobate based integrated optical devices. Using two different guided modes and an adiabatic mode transition between them, we demonstrate a set of building blocks such as waveguides, bends, and couplers which can be used to route light underneath an unpatterned slab of LN, as well as outside the LN-bonded region, thus enabling complex and compact lightwave circuits in LN alongside Si photonics with fabrication ease and low cost.
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