title: Fabrication of ultrafast laser written low-loss waveguides in flexible As₂S₃ chalcogenide glass tape.
abstract: As2S3 glass has a unique combination of optical properties, such as wide transparency in the infrared region and a high nonlinear coefficient. Recently, intense research has been conducted to improve photonic devices using thin materials. In this Letter, highly uniform rectangular single-index and 2 dB/m loss step-index optical tapes have been drawn by the crucible technique. Low-loss (<0.15  dB/cm) single-mode waveguides in chalcogenide glass tapes have been fabricated using femtosecond laser writing. Optical backscatter reflectometry has been used to study the origin of the optical losses. A detailed study of the laser writing process in thin glass is also presented to facilitate a repeatable waveguide inscription recipe.
authors.forename: Jerome
authors.initials: J
authors.lastname: Lapointe
authors.forename: Yannick
authors.initials: Y
authors.lastname: Ledemi
authors.forename: Sébastien
authors.initials: S
authors.lastname: Loranger
authors.forename: Victor Lambin
authors.initials: VL
authors.lastname: Iezzi
authors.forename: Elton
authors.initials: E
authors.lastname: Soares de Lima Filho
authors.forename: Francois
authors.initials: F
authors.lastname: Parent
authors.forename: Steeve
authors.initials: S
authors.lastname: Morency
authors.forename: Younes
authors.initials: Y
authors.lastname: Messaddeq
authors.forename: Raman
authors.initials: R
authors.lastname: Kashyap