Photonic integration based on a ferroelectric thin-film platform.

ABSTRACT: Photonic-integrated circuits (PICs) using ferroelectric materials are expected to be used in many applications because of its unique optical properties such as large electro-optic coefficients. In this study, a novel PIC based on a ferroelectric thin-film platform was designed and fabricated, where high-speed optical modulator, spot-size converters (SSCs), and a variable optical attenuator (VOA) were successfully integrated. A ferroelectric lanthanum-modified lead zirconate titanate (PLZT) thin film was epitaxially-grown by using a modified sol-gel method, and it exhibits large electro-optic coefficients (>120 pm/V) and low propagation loss (1.1 dB/cm). The optical modulator, a Mach-Zehnder type, exhibited a half-wave voltage (V_π) of 6.0 V (V_πL = 4.5 Vcm₎ a

SUBMITTER: Abe S 

PROVIDER: S-EPMC6851366 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature