title: Single- and few-moded lithium aluminosilicate optical fiber for athermal Brillouin strain sensing.
abstract: Results are presented toward realizing a true single-mode fiber whose Brillouin frequency shift is independent of temperature, while its dependence on strain is comparable to conventional high-silica-content single-mode fibers. Demonstrated here is a fiber with a negative thermal sensitivity dν/dT of -0.26  MHz/K and a strain sensitivity of +406  MHz/%. The suppression of the Brillouin thermal response is enabled by the large thermal expansion coefficient of the group I oxide-containing silica glass network.
authors.forename: P D
authors.initials: PD
authors.lastname: Dragic
authors.forename: C
authors.initials: C
authors.lastname: Ryan
authors.forename: C J
authors.initials: CJ
authors.lastname: Kucera
authors.forename: M
authors.initials: M
authors.lastname: Cavillon
authors.forename: M
authors.initials: M
authors.lastname: Tuggle
authors.forename: M
authors.initials: M
authors.lastname: Jones
authors.forename: T W
authors.initials: TW
authors.lastname: Hawkins
authors.forename: A D
authors.initials: AD
authors.lastname: Yablon
authors.forename: R
authors.initials: R
authors.lastname: Stolen
authors.forename: J
authors.initials: J
authors.lastname: Ballato