Laser-machined fibers as Fabry-Perot pressure sensors

Stuart Watson, Matthew J. Gander, William N. MacPherson, James S. Barton, J. D C Jones, Thomas Klotzbuecher, Torsten Braune, Johannes Ott, Felix Schmitz

Research output: Contribution to journalArticlepeer-review

53 Citations (Scopus)


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 µm 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 µs to a step increase in pressure. © 2006 Optical Society of America.

Original languageEnglish
Pages (from-to)5590-5596
Number of pages7
JournalApplied Optics
Issue number22
Publication statusPublished - 1 Aug 2006


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