Optical fiber detector based on light diffraction

Aristides Alfredo Marcano O.; L. Rodriguez; J. Ramirez

doi:10.1117/12.591602

21 October 2004 Optical fiber detector based on light diffraction

Aristides Alfredo Marcano O., L. Rodriguez, J. Ramirez

Proceedings Volume 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications; (2004) https://doi.org/10.1117/12.591602
Event: 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, 2004, Porlamar, Venezuela

Abstract

We describe a new kind of fiber optics device, which detects directly sound and other perturbations with high sensitivity. The fiber works as a sound transducer able to detect human voice of low power levels. The phase changes, induced by sound waves in the propagating through the fiber light beam, generate amplitude changes after the beam is diffracted at the exit end of the fiber. A specially designed electronic system processes the signal which can be used for sound reproduction and detection. The system can also be used as an all purposes detector for the registration of subsonic and ultrasonic acoustic waves, direct pressure, temperature changes and other external fields.

Citation Download Citation

Aristides Alfredo Marcano O., L. Rodriguez, and J. Ramirez "Optical fiber detector based on light diffraction", Proc. SPIE 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, (21 October 2004); https://doi.org/10.1117/12.591602

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