title: BaTiO3 thin-film waveguide modulator with a low voltage-length product at near-infrared wavelengths of 0.98 and 1.55 microm.
abstract: A BaTiO3 thin-film electro-optic waveguide modulator with a low half-wave voltage-length product has been demonstrated at near-infrared wavelengths of 1-1.6 microm. Half-wave voltage-length products as small as 0.25 and 0.5 V cm were measured for a 5-mm-long device at wavelengths of 973 and 1561 nm, respectively. The effective electro-optic coefficients were calculated as 420 pm/V at 973 nm and 360 pm/V at 1561 nm. Further improvements in device performance by optimizing the ferroelectric domain structure are anticipated.
authors.affiliation: Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, USA. ptang@northwestern.edu
authors.forename: Pingsheng
authors.initials: P
authors.lastname: Tang
authors.forename: A L
authors.initials: AL
authors.lastname: Meier
authors.forename: D J
authors.initials: DJ
authors.lastname: Towner
authors.forename: B W
authors.initials: BW
authors.lastname: Wessels