Musical instrument pickup based on a laser locked to an optical fiber resonator | Zendy

S. Avino | Zendy; Jack A. Barnes | Zendy; G. Gagliardi | Zendy; Xijia Gu | Zendy; David E. Gutstein | Zendy; James Mester | Zendy; Costa Nicholaou | Zendy; HansPeter Loock | Zendy

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Musical instrument pickup based on a laser locked to an optical fiber resonator

Author(s) -

S. Avino,

Jack A. Barnes,

G. Gagliardi,

Xijia Gu,

David E. Gutstein,

James Mester,

Costa Nicholaou,

HansPeter Loock

Publication year - 2011

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.025057

Subject(s) - optics , pickup , laser , resonator , fiber laser , transducer , free spectral range , optical fiber , relative intensity noise , materials science , physics , acoustics , semiconductor laser theory , computer science , artificial intelligence , image (mathematics)

A low-noise transducer based on a fiber Fabry-Perot (FFP) cavity was used as a pickup for an acoustic guitar. A distributed feedback (DFB) laser was locked to a 25 MHz-wide resonance of the FFP cavity using the Pound-Drever-Hall method. The correction signal was used as the audio output and was preamplified and sampled at up to 96 kHz. The pickup system is largely immune against optical noise sources, exhibits a flat frequency response from the infrasound region to about 25 kHz, and has a distortion-free audio output range of about 50 dB.

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