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A Simple, High Sensitive Fiber Optic Microphone Based on Cellulose Triacetate Diaphragm    
Yazarlar
Dr. Öğr. Üyesi Serkan KESER Dr. Öğr. Üyesi Serkan KESER
Kırşehir Ahi Evran Üniversitesi, Türkiye
Timuçin Emre Tabaru
Sivas Bilim ve Teknoloji Üniversitesi, Türkiye
Ömer Galip Saraçoğlu
Erciyes Üniversitesi, Türkiye
Şekip Esat Hayber
Bursa Uludağ Üniversitesi, Türkiye
Özet
We present a high sensitive fiber-optic microphone (FOM) with a wide measuring range based on a cellulose triacetate diaphragm in this work. The average signal-to-noise ratio (SNR) of the proposed FOM is measured 50.86 dB in at the frequency range of 100 Hz-20 kHz. In the same spectrum range, the highest SNR for the 2-kHz frequency under 103.16 mPa acoustic pressure is measured at 72.20 dB with 2 Hz resolution bandwidth, which corresponds to a noise-limited minimum detectable acoustic pressure level of 17.91 μPa/√Hz. The proposed sensor has advantages of high sensitivity, low cost, and easy fabrication. According to the assessments based on the obtained results, the FOM can be used for medical spectroscopy, imaging applications, and for long-distance listening and voice recognition in the military-public security.
Anahtar Kelimeler
Fabry-Perot | fiber-optic microphone | polymer diaphragm
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı Journal of Lightwave Technology
Dergi ISSN 0733-8724
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q1
Makale Dili İngilizce
Basım Tarihi 12-2018
Cilt No 36
Sayı 23
Sayfalar 5650 / 5655
Doi Numarası 10.1109/JLT.2018.2878345
Makale Linki http://dx.doi.org/10.1109/jlt.2018.2878345