title: Optical frequency comb generation from aluminum nitride microring resonator.
abstract: Aluminum nitride (AlN) is an appealing nonlinear optical material for on-chip wavelength conversion. Here we report optical frequency comb generation from high-quality-factor AlN microring resonators integrated on silicon substrates. By engineering the waveguide structure to achieve near-zero dispersion at telecommunication wavelengths and optimizing the phase matching for four-wave mixing, frequency combs are generated with a single-wavelength continuous-wave pump laser. Further, the Kerr coefficient (n₂) of AlN is extracted from our experimental results.
authors.affiliation: Department of Electrical Engineering, Yale University, New Haven, Connecticut 06511, USA.
authors.forename: Hojoong
authors.initials: H
authors.lastname: Jung
authors.forename: Chi
authors.initials: C
authors.lastname: Xiong
authors.forename: King Y
authors.initials: KY
authors.lastname: Fong
authors.forename: Xufeng
authors.initials: X
authors.lastname: Zhang
authors.forename: Hong X
authors.initials: HX
authors.lastname: Tang