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11 April 2019 Formalin detection using singlemode-multimode-singlemode fiber structure
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Proceedings Volume 11044, Third International Seminar on Photonics, Optics, and Its Applications (ISPhOA 2018); 110440X (2019) https://doi.org/10.1117/12.2504986
Event: Third International Seminar on Photonics, Optics, and Its Applications (ISPhOA 2018), 2018, Surabaya, Indonesia
Abstract
We demonstrate the singlemode-multimode-singlemode (SMS) fiber structure for formalin detection. Formalin is a formaldehyde compound in water with an average concentration of 37 % and 15 % of methanol and water. Formalin consists of two substances; formaldehyde and water. Formaldehyde contamination in foods causes a negative effect for body. International Agency for Research on Cancer (IARC) classifies formaldehyde into Group 1 (carcinogenic to humans). Detection contamination of formalin in foods is very important. In this work, SMS fiber structure was used for formalin detection due to easy fabrication, cheap and more accurate in readings. This experiment utilized a difference in refractive index that affects the power output from optical fiber.
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Rofifah H. J., Gideon S., Putri Yeni A., Agus Muhamad H., Ninik Irawati, and Rinda Nur H. "Formalin detection using singlemode-multimode-singlemode fiber structure", Proc. SPIE 11044, Third International Seminar on Photonics, Optics, and Its Applications (ISPhOA 2018), 110440X (11 April 2019); https://doi.org/10.1117/12.2504986
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