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SMS Fiber Structure for Temperature Measurement Using an OTDR

Photonic Sensors 2013年第3期3卷 262-266页

作者： A. M. HATTA K. INDRIAWATI T. BESTARIYAN T. HUMADA sekartedjo Engineering Physics Department Faculty of Industrial Technology Institut Teknologi Sepuluh Nopember Surabaya 60111 Indonesia Physics Department Faculty of Science Jazan University Gizan 22822 Kingdom of Saudi Arabia

A singlemode-multimode-singlemode （SMS） fiber structure for temperature measurement using an optical time domain reflectometer （OTDR）-based interrogation system is proposed. A temperature measurement range of 40 ℃-195 ℃ with a resolution of 0.12 ℃ and a linearity of 0.992 could be achieved for the multimode fiber （MMF） graded index with a length of 60mm. It was also demonstrated that two-point temperature measurement with two SMS fiber structures as temperature sensors could be made. The proposed temperature measurement system offered a high resolution and also benefited from a simple configuration with a capability of multi-point temperature measurement.

关键词： Temperature sensor SMS fiber structure OTDR

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Heart Rate Monitoring Sensor Based on Singlemode-Multimode-Singlemode Fiber

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Photonic Sensors 2020年第2期10卷 186-193页

作者： Ninik IRAWATI Agus Muhamad HATTA Yoseph Gita Yhun YHUWANA sekartedjo Department of Engineering Physics Institute Teknologi Sepuluh NopemberSurabaya 60111Indonesia Aston Institute of Photonics Technologies Aston UniversityAston Express WayB4&ET BirmighamUnited Kingdom Department of Physics Airlangga UniversitySurabaya 60115Indonesia

The singlemode-multimode-singlemode(SMS)fiber structure for a heart rate monitoring is proposed and *** artificial electrocardiogram(ECG)signal is used to simulate the heart pulse at different rates ranging from 50 beats per minute(bpm)to 200 *** SMS fiber structure is placed at the center of a loudspeaker and it senses the vibration of the *** vibration of the pulse signal applied to the SMS fiber structure changes the intensity of the optical output *** proposed sensor shows a linear frequency of the heart rate sensing range that matches well with the relevant heart rate from the artificial *** work shows the capability of the SMS fiber structure monitoring the heart rate frequencies for a long term,high stability realization,and reproducibility,and being suitable for the observation in hospitals as well as in other environments.

关键词： Heart rate monitoring fiber optic sensor SMS fiber singlemode-multimode-singlemode fiber hear rate sensor

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Long-Range Displacement Sensor Based on SMS Fiber Structure and OTDR

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Photonic Sensors 2015年第2期5卷 166-171页

作者： A. ARIFIN A. M. HATTA sekartedjo M. S. MUNTINI A. RUBIYANTO Department of Physics Institut Teknologi Sepuluh Nopember Surabaya 60111 Indonesia Departement of Engineering Physics Institut Teknologi Sepuluh Nopember Surabaya 6011 Indonesia Department of Physics Hasanuddin University Makassar 90245 Indonesia Department of Physics Jazan University Jazan 45-142 Saudi Arabia

This paper presents a long-range displacement measurement method by using a single- multi-single mode （SMS） fiber structure, attached to a flexible plate between two permanent poles and the optical time domain reflectometer （OTDR）-based interrogator. The SMS fiber structure sensors are prepared with two different configurations, i.e. straight and sinusoidal configurations. It is demonstrated that the displacement sensor can perform a displacement measurement with a range from 0 mm to 150 mm with a resolution of 0.159 mm. The sinusoidal configuration provides a better sensitivity than the straight configuration. The proposed sensor offers a low cost, and it can be implemented for quasi-distributed displacement measurement which is suitable for civil structure monitoring.

关键词： Displacement sensor SMS fiber structure OTDR

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Graphene-and Multi-Walled Carbon Nanotubes-Coated Tapered Plastic Optical Fiber for Detection of Lard Adulteration in Olive Oil

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Photonic Sensors 2022年第4期12卷 1-10页

作者： Ika PUSPITA Ninik IRAWATI Kartika Anoraga MADURANI Fredy KURNIAWAN sekartedjo KOENTJORO Agus Muhamad HATTA Department of Engineering Physics Faculty of Industrial Technology and System EngineeringInstitut Teknologi Sepuluh NopemberSurabaya 60111Indonesia Department of Physics National Taiwan UniversityTaipei 10617China Department of Chemistry Faculty of Science and Data AnalyticsInstitut Teknologi Sepuluh NopemberSurabaya 60111Indonesia

A rapid and high-performance sensor for lard adulterant in edible oil was developed using the tapered plastic optical fiber(POF)coated with graphene and multi-walled carbon *** coating material was deposited onto a tapered POF with a taper waist diameter and a taper length of 0.45 mm and 1 cm,*** addition of the coating material was used to increase the sensitivity and selectivity coefficient of the tapered POF toward the lard *** sensing mechanism is based on a simultaneous interaction of lard substance and an evanescent wave of tapered POF with the coating *** results showed that graphene coating on the tapered POF increased the selectivity coefficient of the tapered POF towards lard substance from 33.54 to 324.19,and it gave a sensitivity of 0.427 dBm/%.In comparison,multi-walled carbon nanotubes coating increased the selectivity coefficient to 71.65 and increased its sensitivity to 1.189 dBm/%.Thus,the proposed configuration of the tapered POF with the coating material offered a simple configuration for a rapid,high sensitivity and selectivity detection of lard adulterant in edible oils.

关键词： Lard adulteration tapered optical fiber sensor graphene carbon nanotubes food safety

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