title: Enhanced structural sensitivity of hybrid-mode acoustic phonons in axially-varying photonic crystal fiber.
abstract: We report the observation of anti-crossings between hybrid-mode acoustic phonons in an axially-varying photonic crystal fiber. Our experimental results are analyzed using an electrostriction theory which reveals strong coupling between longitudinal and shear components of elastic wave. These anti-crossings are highly sensitive to the transverse fiber structure and thus could be potentially used for ultra-sensitive sensors and new opto-acoustic devices.
authors.forename: P
authors.initials: P
authors.lastname: Szriftgiser
authors.forename: A
authors.initials: A
authors.lastname: Kudlinski
authors.forename: D
authors.initials: D
authors.lastname: Bacquet
authors.forename: G
authors.initials: G
authors.lastname: Bouwmans
authors.forename: M
authors.initials: M
authors.lastname: Dossou
authors.forename: J-C
authors.initials: JC
authors.lastname: Beugnot
authors.forename: V
authors.initials: V
authors.lastname: Laude