title: 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.
authors.affiliation: Department of Electrical &Computer Engineering, University of California, San Diego, La Jolla, California 92093, USA.
authors.forename: Peter O
authors.initials: PO
authors.lastname: Weigel
authors.affiliation: Department of Electrical &Computer Engineering, University of California, San Diego, La Jolla, California 92093, USA.
authors.forename: Marc
authors.initials: M
authors.lastname: Savanier
authors.affiliation: Sandia National Laboratory, Applied Microphotonic Systems, Albuquerque, New Mexico 87185, USA.
authors.forename: Christopher T
authors.initials: CT
authors.lastname: DeRose
authors.affiliation: Sandia National Laboratory, Applied Microphotonic Systems, Albuquerque, New Mexico 87185, USA.
authors.forename: Andrew T
authors.initials: AT
authors.lastname: Pomerene
authors.affiliation: Sandia National Laboratory, Applied Microphotonic Systems, Albuquerque, New Mexico 87185, USA.
authors.forename: Andrew L
authors.initials: AL
authors.lastname: Starbuck
authors.affiliation: Sandia National Laboratory, Applied Microphotonic Systems, Albuquerque, New Mexico 87185, USA.
authors.forename: Anthony L
authors.initials: AL
authors.lastname: Lentine
authors.affiliation: SRICO Inc., 2724 Sawbury Blvd Columbus, OH 43235-4579, USA.
authors.forename: Vincent
authors.initials: V
authors.lastname: Stenger
authors.affiliation: Department of Electrical &Computer Engineering, University of California, San Diego, La Jolla, California 92093, USA.
authors.forename: Shayan
authors.initials: S
authors.lastname: Mookherjea