Fiber Optik Fabry-Perot Akustik Sensörler için Yeni Bir Diyafram Malzemesi Olarak 2D GaSe Benzetimi

Yıl 2018, Cilt:6 Sayı:2 (2018) (Özel Sayı: IMCOFE 2017), 369 - 381, 06.04.2018

Umut Aydemir , Şekip Esat Hayber , Timuçin Emre Tabaru Ömer Galip Saraçoğlu

Öz

Algılanacak akustik/basınç sinyalinin şiddet ve frekans değerine
duyarlı uçlar üretmek diyafram tasarımının doğru yapılmasıyla sağlanır.
Kullanılan diyafram malzemesinin hem geometrik boyutları hem de yapısal
özellikleri (yoğunluk, Young modülü, Poisson oranı gibi) sensör performansını
etkileyen unsurlardır. Bu durumdan ötürü literatürde farklı tipte diyafram
malzemeleri araştırılmaktadır. Bu çalışmada diyafram tabanlı fiber optik
Fabry-Perot (FP) akustik sensörlerde kilit rol oynayan diyafram performansı üzerine
hesaplamalar verilmiştir. Hesaplamalarda diyafram olarak grafen benzeri iki
boyutlu (2D) Galyum Selenit (GaSe) kullanılmıştır. 2D malzemeler sınıfına ait GaSe
malzemesi fiber optik FP akustik sensör uç tasarımında diyafram olarak ilk defa
hesaplanmış ve benzetim yoluyla sensör ucunun performansı teorik olarak elde
edilmiştir. Teorik hesaplamalar ve benzetimler neticesinde 2D GaSe malzemesi
fiber optik FP akustik sensör uç üretiminde diyafram olarak kullanılabileceği
öngörülmüştür. Oluşturulan uçların frekans cevapları ve akustik basınca
duyarlılığı teorik olarak hesaplanmış ve literatürde kullanılan diğer
geleneksel malzemelerden elde edilen sonuçlar ile karşılaştırılarak
verilmiştir. Sensör görünürlüğü ve frekansı açısından GaSe malzemesinin kullanım
alanına göre alternatifler sunduğu görülmüştür.

Anahtar Kelimeler

Akustik algılama, Fabry-Perot (FP) interferometresi, Galyum Selenit (GaSe), Fiber Optik Sensör

A New Diaphragm Material for Fiber Optic Fabry-Perot Acoustic Sensors with 2D GaSe

Öz

In order to produce tips which is sensitive to the intensity and frequency of the acoustic/pressure signal suitable diaphragm design is essential. Both the geometric dimensions and the structural properties (density of material, Young's modulus and Poisson's ratio) of diaphragm materials are affecting the sensor performance. Therefore different types of diaphragm materials are being investigated in the literature. In this study, the performance of diaphragm-based fiber optic Fabry-Perot (FP) acoustic sensors is discussed. Twodimensional (2D) Gallium Selenide (GaSe) like graphene were used as diaphragms in the calculations. Family of 2D materials like GaSe was firstly calculated as diaphragm material in the fiber optic FP acoustic sensor tip design and the performance of the sensor tip was theoretically simulated. As a result of theoretical calculations and simulations, it is predicted that 2D GaSe material could be used by production of fiber optic FP sensors as a diaphragm material. The frequency responses and the acoustic pressure sensitivity of the designed tips are theoretically calculated and compared with tips produced conventional materials in the literature. In terms of sensor visibility and frequency response, it has been shown that GaSe offers alternatives depending on the field of use.

Anahtar Kelimeler

Acoustic detection, Fabry-Perot (FP) interferometer, Gallium selenide (GaSe), fiber optic sensor

Kaynakça

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