Pengembangan Sensor Suhu Berbasis Single Mode Fiber U-Bend Dengan Adjustable Optical Light Source

Kusumawardani, Syifa Frida (2026) Pengembangan Sensor Suhu Berbasis Single Mode Fiber U-Bend Dengan Adjustable Optical Light Source. Other thesis, InstitutTeknologi Sepuluh Nopember.

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Abstract

Penelitian ini mengembangkan sistem sensor suhu berbasis serat optik Single Mode dengan konfigurasi U-bend dan unit Adjustable Optical Light Source (OLS) untuk pengukuran suhu secara kontak guna menganalisis perbandingan respons termal antara serat optik tipe Standar (jaket PVC) dan tipe Drop-wire (jaket Hard-PE). Sensor direalisasikan menggunakan Single Mode Fiber dengan diameter inti 2 mm, pengupasan cladding sepanjang 10 cm, serta diameter konfigurasi U-shape sebesar 3 cm yang didukung oleh unit MLDEVAL berkestabilan tinggi (fluktuasi < 0,05 dB) dengan rentang daya keluaran 0–28 mW melalui variasi tegangan 10–190 mV. Hasil eksperimen menunjukkan bahwa Standard Single-Mode Fiber (A-2) merupakan elemen sensor paling optimal dengan karakteristik linear dan sensitivitas positif mencapai 0,0056 dBm/°C (R^2≈ 0,98), sementara varian Drop-wire (B-2) menunjukkan respons lebih rendah sebesar 0,0023 dBm/°C serta mengalami saturasi mekanik pada suhu di atas 80°C akibat kekakuan material pelindung Hard-PE yang menghambat tekanan mikro (microbending) pada inti serat. Berdasarkan analisis data tersebut, konfigurasi sensor serat optik standar terbukti efektif dan presisi untuk diaplikasikan sebagai instrumen pemantauan suhu berbasis atenuasi daya optik.
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This research developed a Single Mode optical fiber-based temperature sensor system with a U-bend configuration and an Adjustable Optical Light Source (OLS) unit for contact temperature measurement to analyze the thermal response comparison between Standard type (PVC jacket) and Drop-wire type (Hard-PE jacket) optical fibers. The sensor was realized using Single Mode Fiber with a core diameter of 2 mm, cladding stripping along 10 cm, and a U-shape configuration diameter of 3 cm supported by a high-stability MLDEVAL unit (fluctuation < 0.05 dB) with an output power range of 0–28 mW through a voltage variation of 10–190 mV. The experimental results show that Standard Single-Mode Fiber (A-2) is the most optimal sensor element with linear characteristics and positive sensitivity reaching 0.0056 dBm/°C (R^2 ≈0.98 ), while the Drop-wire variant (B-2) shows a lower response of 0.0023 dBm/ °C and experienced mechanical saturation at temperatures above 80°C due to the stiffness of the Hard-PE protective material, which inhibited microbending of the fiber core. Based on this data analysis, the standard optical fiber sensor configuration proved to be effective and precise for application as an optical power attenuation-based temperature monitoring instrument

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Fiber Optic Sensor, Single Mode, U-Bend, Adjustable OLS, sensitivitas Fiber Optic Sensor, Single Mode, U-Bend, Adjustable OLS, Sensitivity
Subjects:	Q Science Q Science > QC Physics > QC100.5 Measuring instruments (General) Q Science > QC Physics > QC448 Fiber optics.
Divisions:	Faculty of Vocational > Instrumentation Engineering
Depositing User:	Syifa Frida Kusumawardani
Date Deposited:	23 Feb 2026 01:24
Last Modified:	23 Feb 2026 01:24
URI:	http://repository.its.ac.id/id/eprint/131599

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