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Lin W, Hu J, Zhao F, Sun S, Liu Y, Liu S, Yu F, Mak PU, Pun SH, Shum PP, Vai MI, Shao L. Adaptive Fiber-Ring Lasers Based on Isopropanol Filled Microfiber Coupler for High-Sensitivity Temperature Sensing. MICROMACHINES 2022; 13:1697. [PMID: 36296050 PMCID: PMC9610885 DOI: 10.3390/mi13101697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/04/2022] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
We demonstrated a new method for temperature measurement inside a fiber ring laser (FRL) cavity. Different from traditional FRL temperature sensing system which need additional filter working as a sensor, a micro-fiber coupler (MFC) was designed as a beam splitter, filter, and temperature sensor. In addition, isopropanol, a liquid with very high photothermal coefficient, is selectively filled in the MFC in order to improve the sensitivity of the system on temperature. In the dynamic range of 20-40 °C, we obtained a good temperature sensitivity of -1.29 nm/°C, with linear fitting up to 0.998. Benefiting from the advantages of laser sensing, the acquired laser has a 3 - dB bandwidth of less than 0.2 nm and a signal-to-noise ratio (SNR) of up to 40 dB. The proposed sensor has a low cost and high sensitivity, which is expected to be used in biomedical health detection, real-time monitoring of ocean temperature, and other application scenarios.
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Affiliation(s)
- Weihao Lin
- State Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macau 999078, China
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
- Department of Electrical and Computer Engineering, University of Macau, Macau 999078, China
| | - Jie Hu
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Fang Zhao
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Siming Sun
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yuhui Liu
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Shuaiqi Liu
- State Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macau 999078, China
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
- Department of Electrical and Computer Engineering, University of Macau, Macau 999078, China
| | - Feihong Yu
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Peng-Un Mak
- Department of Electrical and Computer Engineering, University of Macau, Macau 999078, China
| | - Sio-Hang Pun
- State Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macau 999078, China
| | - Perry-Ping Shum
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Mang-I Vai
- State Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macau 999078, China
- Department of Electrical and Computer Engineering, University of Macau, Macau 999078, China
| | - Liyang Shao
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
- Peng Cheng Laboratory, Shenzhen 518005, China
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Shah SA, Ramzan N, Imran MA, Abbasi QH. Editorial for the Special Issue on Security and Sensing Devices for Healthcare Technologies. MICROMACHINES 2021; 12:mi12091028. [PMID: 34577672 PMCID: PMC8468416 DOI: 10.3390/mi12091028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 08/19/2021] [Indexed: 11/16/2022]
Abstract
Micro-/nano-scaled structures, materials, and devices enable the continuous monitoring of human physical activities and behaviors, as well as physiological and biochemical parameters during daily life [...].
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Affiliation(s)
- Syed Aziz Shah
- Research Centre for Intelligent Healthcare, Coventry University, Coventry CV1 5RW, UK
- Correspondence:
| | - Naeem Ramzan
- School of Computing, Engineering & Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, UK;
| | - Muhammad Ali Imran
- James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK;
| | - Qammer Hussain Abbasi
- Communication Sensing and Imaging Group, James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK;
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