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All Journal Journal of Physics and Its Applications Indonesian Physical Review Proceeding Seminar Nasional IPA
Mufatihah, Nishfa
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Astronomy Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics

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FABRIKASI DAN KARAKTERISASI WAVEGUIDE POLYMETHIL METHACRYLATE (PMMA) DENGAN CORE MATERIAL EXPANDED POLYSTYRENE (EPS) DAN UNSATURATED POLYESTER RESIN (UPR) Mufatihah, Nishfa; Yulianto, Agus; Aji, Mahardika Prasetya; Yulianti, Ian
Proceeding Seminar Nasional IPA 2025
Publisher : LPPM UNNES

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Abstract

Telah dilakukan penelitian dengan karakterisasi dan fabrikasi waveguide berbasis polymethyl methacrylate (PMMA). Material inti yang digunakan adalah Expanded Polyestyre (EPS) dengan Unsaturated Polyester Resin (UPR) sebagai upaya meningkatkan keefisienan waktu dalam fabrikasi waveguide. Fabrikasi waveguide dilakukan dengan memahat PMMA berbentuk lurus dibagian tengah menggunakan computer numerical control (CNC), kemudian diisi material inti dan disambungkan dengan polymer optical fiber (POF) dan ditutup kembali menggunakan PMMA yang belum dipahat. Waveguide difabrikasi dengan variasi konsentrasi EPS dan UPR sebanyak enam variasi konsentrasi.. Karakterisasi dilakukan dengan cara melewatkan cahaya LED berwarna merah dengan panjang gelombang 660 nm ke dalam waveguide. Pengukuran tegangan keluaran pada waveguide dilakukan menggunakan detektor fotodioda yang disambungkan dengan multimeter. Untuk hasil karakterisasi, waveguide yang memiliki loss arus dan tegangan paling kecil adalah waveguide F dengan konsentrasi EPS dan UPR sebesar 70% dan 30%. Waveguide yang memiliki efisiensi dalam pembuatan adalah waveguide A dengan konsentrasi EPS dan UPR sebesar 20% dan 80%.
DESIGN AND CHARACTERIZATION OF A SIMPLE TEMPERATURE SENSOR BASED ON A POLYMER SINE S-BEND OPTICAL WAVEGUIDE STRUCTURE Yulianti, Ian; Hidayah, Rizki Roqissatul; Leonardy, Joshu; Fianti, Fianti; Sunarno, Sunarno; W. P, Wasi Sakti; Utomo, Galih R.; Prayogo, Defrian; Mufatihah, Nishfa
Indonesian Physical Review Vol. 8 No. 3 (2025)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v8i3.511

Abstract

This study presents the design, fabrication, and performance evaluation of a sine S-bend embedded square-core optical waveguide for temperature sensing applications. The waveguide was fabricated using a straightforward and cost-effective CNC milling technique, with PMMA as the cladding and unsaturated polyester resin (UPR) as the core material. Three different bend heights (0.5 cm, 0.6 cm, and 0.7 cm) were investigated to assess their effects on sensor sensitivity, response time, accuracy, and hysteresis. Results showed that increasing the bend height enhanced the sensor sensitivity, with the highest sensitivity of 0.0283 dB/°C achieved at a bend height of 0.7 cm. The response time was consistently maintained at approximately 40 seconds across all samples. The sensor exhibited excellent accuracy, reaching up to 99.31% at a bend height of 0.5 cm. The maximum hysteresis observed was 0.202 % at a bend height of 0.7 cm, indicating stable performance during thermal cycling. These results confirm that the integration of a sine S-bend structure, smooth core surface, and precise waveguide dimensions can significantly improve sensor performance while maintaining a simple and scalable fabrication process.
Performance Comparison of Large-Core Optical Waveguides with Waste-Derived and Analytical-Grade Chitosan Core Materials Yulianti, Ian; Rizkika, Aflah Agus; Darma Putra, Ngurah Made; Alauhdin, Mohammad; Astuti, Budi; Wiwit Prayitno, Wasi Sakti; Prayogo, Deffrian; Mufatihah, Nishfa; Athoriq, Naufal
Journal of Physics and Its Applications Vol 8, No 1 (2026): February 2026
Publisher : Diponegoro University Semarang Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpa.v8i1.30500

Abstract

This study investigates and compares the optical performance of large-core polymer waveguides fabricated using shrimp-shell-derived chitosan (SSC) and analytical-grade chitosan (AGC) as core materials. Both materials were processed into a buried square-core waveguide configuration and evaluated through optical loss measurements, time-dependent loss (TiDL), temperature-dependent loss (TDL), and microstructural examination. The two chitosan types exhibited their lowest attenuation at a concentration of 0.04 g/mL, with AGC showing marginally lower optical loss, consistent with its higher purity and degree of deacetylation. AGC also demonstrated superior temporal and thermal stability, supported by SEM results indicating a smoother and more homogeneous core morphology. Nevertheless, SSC showed performance levels closely comparable to AGC, revealing that biowaste-derived chitosan can function effectively as a core material for large-core waveguides. This outcome underscores the potential of SSC as a sustainable, low-cost alternative, contributing to SDG 12 (Responsible Consumption and Production) through biowaste valorization, and SDG 9 (Industry, Innovation, and Infrastructure) by promoting eco-friendly materials for future optical sensor platforms. The results affirm that SSC-based waveguides hold promise for applications including humidity, pH, chemical, and biochemical sensing.
Co-Authors Agus Yulianto Athoriq, Naufal Budi Astuti Fianti Fianti, Fianti Hidayah, Rizki Roqissatul Ian Yulianti, Ian Leonardy, Joshu Mahardika Prasetya Aji Mohammad Alauhdin, Mohammad Prayogo, Deffrian Prayogo, Defrian Putra, Ngurah Made Darma Rizkika, Aflah Agus Sunarno Sunarno Utomo, Galih R. W. P, Wasi Sakti Wiwit Prayitno, Wasi Sakti