Rahul Kumar, Northumbira University, Faculty of Engineering & Environments, Newcastle, United Kingdom
Wei Han, Technological University DublinFollow
Dejun Liu, Technological University DublinFollow
W. P. Ng, Northumbira University, Faculty of Engineering & Environments, Newcastle, United Kingdom
Binns, Richard Binns, Richard, Northumbira University, Faculty of Engineering & Environments, Newcastle, United Kingdom
Krishna K. Busawon, University of Northumbria, Department of Mathematics, Newcastle, United Kingdom
Yong Qing Fu, Northumbira University, Faculty of Engineering & Environments, Newcastle, United Kingdom
Zabih Ghassemlooy, University of Northumbria, Newcastle, United Kingdom
Chris P. Underwood, University of Northumbria, Faculty of Engineering and Environment, Newcastle, United Kingdom
Khamid Kh Mahkamov, University of Northumbria, Faculty of Engineering and Environment, Newcastle, United Kingdom
Jinhui Yuan, Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Beijing, China
Chongxiu Yu, Beijing University of Posts and Telecommunications, Beijing, China
Huazhong Shu, Nanjing University of Post and TeleCommunications, Key Laboratory for Organic Electronics and Information Displays (KLOEID), Nanjing, China
Xing Ao Li, Nanjing University of Post and TeleCommunications, Key Laboratory for Organic Electronics and Information Displays (KLOEID), Nanjing, China
Tuan Guo, Jinan University, Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Guangzhou, China
Gerald Farrell, Technological University DublinFollow
Yuliya Semenova, Technological University DublinFollow
Qiang Wu, Northumbira University, Faculty of Engineering & Environments, Newcastle, United KingdomFollow

Document Type

Article

Rights

Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence

Disciplines

2. ENGINEERING AND TECHNOLOGY, Communication engineering and systems, telecommunications

Abstract

A platinum coated singlemode-multimode (SM) structure is investigated in this paper as an optical fibre sensor (OFS) to monitor the phase transition of a phase change material (PCM). Paraffin wax has been used as an example to demonstrate the sensor's performance and operation. Most materials have the same temperature but different thermal energy levels during the phase change process, therefore, sole dependency on temperature measurement may lead to an incorrect estimation of the stored energy in PCM. The output spectrum of the reflected light from the OFS is very sensitive to the bend introduced by the PCM where both liquid and solid states exist during the phase transition. The measurement of strain experienced by the OFS during the phase change of the PCM is utilized for identifying the phase transition of paraffin wax between the solid and liquid states. The experimental results presented in this paper show that the OFS with a shorter multimode fibre section has better performance for monitoring the phase transition of paraffin wax with a measured phase transition temperature range of 41.5 °C–57.7 °C for the SM based OFS with a 5 mm long multimode fibre section.

DOI

10.1088/1361-665X/aaddba

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