Pengaruh Lapisan PMMA/ZrSiO4 Pada Sensor Konsentrasi Larutan Natrium Klorida Berbasis Serat Optik Singlemode - Multimode Step Index - Singlemode (SMS)

Firmansyah, Mohammad Risqy (2024) Pengaruh Lapisan PMMA/ZrSiO4 Pada Sensor Konsentrasi Larutan Natrium Klorida Berbasis Serat Optik Singlemode - Multimode Step Index - Singlemode (SMS). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Natrium klorida atau NaCl merupakan salah satu mineral yang melimpah di alam dan banyak dimanfaatkan baik di bidang pangan maupun medis. Salah satu metode sensing konsentrasi larutan NaCl yang sedang banyak dikembangkan adalah metode berbasis serat optik SMS. Dalam penelitian ini dikembangkan sensor konsentrasi larutan NaCl berbasis serat optik SMS berlapis PMMA/ZrSiO4 dengan prinsip multimode interference (MMI) dan penetrasi gelombang evanescent. Tujuan pelapisan sensor menggunakan PMMA/ZrSiO4 adalah untuk meningkatkan indeks bias di sekitar serat optik sehingga memungkinkan cahaya keluar dari core serat optik untuk membentuk gelombang evanescent dan menjadikannya lebih sensitif terhadap konsentrasi larutan NaCl. Hasil yang diperoleh dalam penelitian tugas akhir ini adalah pelapisan PMMA/ZrSiO mampu meningkatkan sensitivitas sensor yaitu 0,004 nm/% dengan koefisien determinasi (R^2) sebesar 0,04 untuk sensor tanpa lapisan; -0,172 nm/% dengan R^2 sebesar 0,77 untuk sensor berlapis PMMA/ZrSiO4 0%; 1,586 nm/% dengan R^2 sebesar 0,93 untuk sensor berlapis PMMA/ZrSiO4 0,5%; serta 0,076 nm/% dengan R^2 sebesar 0,97 untuk sensor berlapis PMMA/ZrSiO4 1%. Hasil pengujian kestabilan sensor terhadap perubahan temperatur lingkungan menunjukkan bahwa sensing konsentrasi larutan NaCl tidak terpengaruh temperatur lingkungan.
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Sodium chloride or NaCl has a huge availability in the nature and is utilized in various fields such as food and medical. One of sensing mechanism of NaCl solution is using SMS optical fiber. A NaCl solution sensor with PMMA/ZrSiO4 coated SMS has been developed in this research. The main sensing principle of the sensor is multimode interference (MMI) and evanescent wave penetration. Coating the SMS using PMMA/ZrSiO4 is done to increase the refractive indeces around core of the SMS. Moreoever, coating the SMS enable the modes to be excited and generate evanescent wave at the interface of the coat and the NaCl solution. This research has a promising result, which the coating of PMMA/ZrSiO4 contribute to increasing the sensor sensitivity. The sensitivity of uncoated sensor is 0,004 nm/% with the coefficient of determination (R^2) of 0,04; -0,172 nm/% with the R^2 of 0,77 for 0% PMMA/ZrSiO4 coated sensor; 1,586 nm/% with the R^2 of 0,93 for 0,5% PMMA/ZrSiO4 coated sensor; and 0,076 nm/% with the R^2 of 0,97 for 1% PMMA/ZrSiO4 coated sensor. In addition, temperature stability of each sensor are good which means that the NaCl solution sensing using PMMA/ZrSiO4 coated SMS resist to the change of ambient temperature.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Gelombang evanescent, indeks bias, konsentrasi larutan NaCl, PMMA, ZrSiO4 === Concentration of NaCl solution, evanescent wave, PMMA, refractive index, ZrSiO4
Subjects:	Q Science > QC Physics > QC173.4.C63 Composite materials Q Science > QC Physics > QC448 Fiber optics. Q Science > QC Physics > QC 611.97.T46 Temperature effects. Including transition temperature T Technology > TP Chemical technology > TP1140 Polymers
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Mohammad Risqy Firmansyah
Date Deposited:	01 Aug 2024 06:58
Last Modified:	18 Sep 2024 04:00
URI:	http://repository.its.ac.id/id/eprint/109594

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