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Lightwave Circuits in Lithium Niobate through Hybrid Waveguides with Silicon Photonics.

ABSTRACT: 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.

SUBMITTER: Weigel PO

PROVIDER: S-EPMC4772107 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature

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Lightwave Circuits in Lithium Niobate through Hybrid Waveguides with Silicon Photonics.

Weigel Peter O PO Savanier Marc M DeRose Christopher T CT Pomerene Andrew T AT Starbuck Andrew L AL Lentine Anthony L AL Stenger Vincent V Mookherjea Shayan S

Scientific reports 20160301

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 ...[more]

PMID: 26927022

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