Observation of axial acoustic waves in multimode PMMA optical fibres and implications for a new class of optical fibre sensor

Allan Ernest, DW. Lamb

Research output: Contribution to journalArticle

6 Citations (Scopus)
26 Downloads (Pure)

Abstract

Observations of axial acoustic waves in multimode polymethylmethacrylate(PMMA) optical fibres are reported. Rapid electrostriction was induced in a 1.25 m length of PMMA optical fibre using a pulsed transverse electric field of ~106 V m-1. By observing the effects of birefringence on a polarised laser beam, acoustic waves travelling with a speed of1050 m s-1 were observed to travel between the fibre ends. Simple calculations indicate that these acoustic waves comprised shear waves, although propagation of surface waves could not be ruled out. The implications of these observations in terms of a new class of optical fibre sensors based on the propagation of axial acoustic waves are also discussed.
Original languageEnglish
Pages (from-to)270-275
Number of pages6
JournalJournal of Physics
Volume15
Issue number1 (2005)
DOIs
Publication statusPublished - 2005

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