title: Photonic crystal slab fabricated on the platform of lithium niobate-on-insulator.
abstract: We report on a photonic crystal slab patterned on a 690 nm thick LiNbO3 thin film bonded to SiO2 on lithium niobate substrate. The transmission spectrum is measured and a broad and clear photonic bandgap ranging from 1335 to 1535 nm with a maximum extinction ratio of more than 20 dB is observed. The bandgap is simulated by plane wave expansion and 3D finite-difference time-domain methods. Such a deep and broad bandgap structure can be used to form high-performance photonic devices and circuits on the platform of lithium niobate-on-insulator.
authors.forename: Lutong
authors.initials: L
authors.lastname: Cai
authors.forename: Huangpu
authors.initials: H
authors.lastname: Han
authors.forename: Shaomei
authors.initials: S
authors.lastname: Zhang
authors.forename: Hui
authors.initials: H
authors.lastname: Hu
authors.forename: Keming
authors.initials: K
authors.lastname: Wang