title: Laser-machined fibers as Fabry-Perot pressure sensors.
abstract: Cavities have been laser ablated in the ends of single-mode optical fibers and sealed by aluminized polycarbonate diaphragms to produce Fabry-Perot pressure sensors. Both conventional fibers and novel, multicore fibers were used, demonstrating the possibility of producing compact arrays of sensors and multiple sensors on an individual fiber 125 microm in diameter. This high spatial resolution can be combined with high temporal resolution by simultaneously interrogating the sensors by using separate laser sources at three wavelengths. Shock tube tests showed a sensor response time of 3 micros to a step increase in pressure.
authors.affiliation: School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK.
authors.forename: Stuart
authors.initials: S
authors.lastname: Watson
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Gander
authors.forename: William N
authors.initials: WN
authors.lastname: MacPherson
authors.forename: James S
authors.initials: JS
authors.lastname: Barton
authors.forename: Julian D C
authors.initials: JD
authors.lastname: Jones
authors.forename: Thomas
authors.initials: T
authors.lastname: Klotzbuecher
authors.forename: Torsten
authors.initials: T
authors.lastname: Braune
authors.forename: Johannes
authors.initials: J
authors.lastname: Ott
authors.forename: Felix
authors.initials: F
authors.lastname: Schmitz