감법을 이용한 실리콘 오일 기반의 2채널 광섬유 온도 센서Silicon Oil-Based 2-Channel Fiber-Optic Temperature Sensor Using a Subtraction Method
- Authors
- 이동은; 유욱재; 신상훈; 김민건; 송영범; 김혜진; 장경원; 탁계래; 이봉수
- Issue Date
- Sep-2016
- Publisher
- 한국센서학회
- Keywords
- Fiber-optic temperature sensor; Silicone oil; Fresnel reflection; OTDR; Subtraction method
- Citation
- 센서학회지, v.25, no.5, pp 344 - 348
- Pages
- 5
- Journal Title
- 센서학회지
- Volume
- 25
- Number
- 5
- Start Page
- 344
- End Page
- 348
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/7899
- DOI
- 10.5369/JSST.2016.25.5.344
- ISSN
- 1225-5475
2093-7563
- Abstract
- We developed a 2-channel fiber-optic temperature sensor (FOTS) using a temperature sensing probe, a fiber-optic coupler, transmitting optical fiber, and an optical time domain reflectometer (OTDR). The temperature sensing probe is divided into a sensing probe and a reference probe for accurate thermometry. A sensing probe is composed of a silicon oil, a FC terminator, a brass pipe, and a single-mode optical fiber and the structure of a reference probe is identical with that of the sensing probe excluding a silicon oil. In this study, we measured the modified optical powers of the light signals reflected from the temperature sensing probe placed inside of the water with a thermal variation from 5 to 70℃. Although the optical power of the reference probe was constant regardless of the temperature change, the optical power of the sensing probe decreased linearly as the temperature increased. As experimental results, the FOTS using a subtraction method showed a small difference (i.e., hysteresis) in its response due to heating and cooling. The reversibility and reproducibility of the FOTS were also evaluated.
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Collections - College of Engineering > School of Energy System Engineering > 1. Journal Articles
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