title: Fabrication of microfluidic optical waveguides on glass chips with femtosecond laser pulses.
abstract: We describe the fabrication of microfluidic channel structures on the surface of a borosilicate glass slide by femtosecond laser direct writing for optical waveguide application. Liquid with a variable refractive index is fed into the microchannel, serving as the core of the waveguide. We demonstrate that either a multimode or a single-mode waveguide can be achieved by controlling the refractive index of the liquid.
authors.affiliation: State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China.
authors.forename: Haiyi
authors.initials: H
authors.lastname: Sun
authors.forename: Fei
authors.initials: F
authors.lastname: He
authors.forename: Zenghui
authors.initials: Z
authors.lastname: Zhou
authors.forename: Ya
authors.initials: Y
authors.lastname: Cheng
authors.forename: Zhizhan
authors.initials: Z
authors.lastname: Xu
authors.forename: Koji
authors.initials: K
authors.lastname: Sugioka
authors.forename: Katsumi
authors.initials: K
authors.lastname: Midorikawa