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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 11 — Apr. 10, 2010
  • pp: 2198–2203

Musical instrument recordings made with a fiber Fabry–Perot cavity: photonic guitar pickup

Nicholas Ballard, Daniel Paz-Soldan, Peter Kung, and Hans-Peter Loock  »View Author Affiliations

Applied Optics, Vol. 49, Issue 11, pp. 2198-2203 (2010)

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A 1 cm long, low-finesse fiber-optic cavity was used as a transducer for the vibrations of the soundboard of an acoustic guitar and of a violin. The reflected light is detected and then amplified and recorded using conventional audio instrumentation. The fiber-optic pickup is found to have a high response range in both amplitude (up to 100 μm displacement) and audio frequency (DC to 20 kHz ) and good linearity up to a displacement of 225 μm . The audio noise is found to arise from the fiber-optic cables and, to a lesser extent, from the laser and laser driver.

© 2010 Optical Society of America

OCIS Codes
(120.7280) Instrumentation, measurement, and metrology : Vibration analysis
(230.1040) Optical devices : Acousto-optical devices
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: January 21, 2010
Revised Manuscript: March 4, 2010
Manuscript Accepted: March 8, 2010
Published: April 7, 2010

Nicholas Ballard, Daniel Paz-Soldan, Peter Kung, and Hans-Peter Loock, "Musical instrument recordings made with a fiber Fabry-Perot cavity: photonic guitar pickup," Appl. Opt. 49, 2198-2203 (2010)

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  1. H. P. Loock, W. S. Hopkins, C. Morris-Blair, R. Resendes, J. Saari, and N. R. Trefiak, “Recording the sound of musical instruments with FBGs: the photonic pickup,” Appl. Opt. 48, 2735-2741 (2009). [CrossRef] [PubMed]
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