The Photonic Guitar Pick-up: Fiber strain sensors find applications in music recording

Year: 2013

Authors: Barnes J. A., Gagliardi G., Loock H.-P.

Autors Affiliation: [1] Dept. of Chemistry, Queen’s University, Kingston, ON, K7L 3N6, Canada
[2] Consiglio Nazionale delle Ricerche-Istituto Nazionale di Ottica (INO),
Comprensorio “A. Olivetti”, Via Campi Flegrei 34, 80078 Pozzuoli (Naples), Italy

Abstract: In this report we give a summary of our work on
the development of low-noise fiber-optic strain sensors. Three
types of strain sensors were developed and were tested by attaching
them to the bodies of acoustic guitars. The fibers are
strained as the soundboards of the guitars vibrate. The resulting
spectral shift of either a Fiber Bragg Grating or a fiber Fabry-
Perot cavity is then used to record the sound of the instrument.


Volume: 27      Pages from: 19  to: 23

KeyWords: laser; strain sensor; fiber optic resonator; laser frequency locking; acoustic sensing