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http://dx.doi.org/10.5573/ieie.2014.51.10.256

A Study on The transducer of acoustic sensor to be Single-mode FBG using Hopper Type WDM be in the Making  

Kim, Kyung Bok (Kyungbok University, Computer Science)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.51, no.10, 2014 , pp. 256-263 More about this Journal
Abstract
We have designed and made three kinds of FBG(Fiber Bragg Grating) Acoustic Transducer using Hopper type WDM on the use of recently developed FBG in Korea. The newly designed three kinds of FBG Acoustic Transducer using Hopper type WDM have an excellent merit of practical use with simple structure of sensors arm as well as the merit with existing fiber sensors. It was possible to detect sound waves in the range of 10 Hz to 18 kHz through the newly designed three kinds of FBG Acoustic Transducer and also, possible to detect its signal within the maximum range of 8.6 m by the use of most suitable resonance condition of the transducer. Especially, we can expect the utilization of low-frequency signal detection instead of existing acoustic sensor in the environment of electric noise and inferior condition. Furthermore, they can be developed as the high-sensibility and multi-point signal detection system through the sensor array system.
Keywords
acoustic wave optical fiber sensor; microphone FBG transducer; low-frequency signal detection; FBG sensor; microphone sensor array system; hopper type WDM;
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