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Gu X, Fang C, Zhuang Y, Zhang D. Ultrahigh-sensitivity temperature sensor based on an elastic TPU capillary whispering gallery resonator. OPTICS LETTERS 2024; 49:310-313. [PMID: 38194556 DOI: 10.1364/ol.501540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 11/21/2023] [Indexed: 01/11/2024]
Abstract
An ultrahigh sensitivity temperature sensor based on an elastic thermoplastic urethane (TPU) capillary whispering-gallery mode (WGM) microcavity is proposed. The temperature sensor comprises a dye-doped TPU capillary and two sealed fused silica capillaries covered at both ends and is fabricated via a thin film assembly and wet etching. The fused silica capillaries limit the thermal volume expansion of the air within it. The volume of the exposed part of the elastic TPU capillary, which has an ultrahigh sensitivity to temperature compared with the thermal volume expansion of material, is increased; the designed elastic TPU capillary WGM microcavity exhibited an ultrahigh sensitivity of 11.28 nm/°C.
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Wu Y, Duan B, Li C, Yang D. Multimode sensing based on optical microcavities. FRONTIERS OF OPTOELECTRONICS 2023; 16:29. [PMID: 37889446 PMCID: PMC10611689 DOI: 10.1007/s12200-023-00084-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 09/08/2023] [Indexed: 10/28/2023]
Abstract
Optical microcavities have the ability to confine photons in small mode volumes for long periods of time, greatly enhancing light-matter interactions, and have become one of the research hotspots in international academia. In recent years, sensing applications in complex environments have inspired the development of multimode optical microcavity sensors. These multimode sensors can be used not only for multi-parameter detection but also to improve measurement precision. In this review, we introduce multimode sensing methods based on optical microcavities and present an overview of the multimode single/multi-parameter optical microcavities sensors. Expected further research activities are also put forward.
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Affiliation(s)
- Yanran Wu
- State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China
- School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China
| | - Bing Duan
- State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China
- School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China
| | - Changhong Li
- School of Electronic Information, Qingdao University, Qingdao, 266071, China.
| | - Daquan Yang
- State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China.
- School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China.
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Zhang Y, Liu Y, Huang Z, Huang P, Tang X, Liu Z, Zhang Y, Yuan L. Simultaneous Measurement of Microdisplacement and Temperature Based on Balloon-Shaped Structure. SENSORS (BASEL, SWITZERLAND) 2023; 23:8521. [PMID: 37896612 PMCID: PMC10610746 DOI: 10.3390/s23208521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 09/19/2023] [Accepted: 09/21/2023] [Indexed: 10/29/2023]
Abstract
An optical fiber sensor for the simultaneous measurement of microdisplacement and temperature based on balloon-shaped single-mode fibers cascaded with a fiber Bragg grating with two core-offset joints is proposed. The interference between the core mode and cladding mode is caused by the stimulation of the cladding mode by the core-offset joints' structure. The cladding of the core has a distinct refractive index, which causes optical path differences and interference. The balloon-shaped structure realizes mode selection by bending. As the displacement increases, the radius of the balloon-shaped interferometer changes, resulting in a change in the interference fringes of the interferometer, while the Bragg wavelength of the fiber grating remains unchanged. Temperature changes will cause the interference fringes of the interferometer and the Bragg wavelength of the fiber grating to shift. The proposed optical fiber sensor allows for the simultaneous measurement of microdisplacement and temperature. The results of the experiment indicate that the sensitivity of the interferometer to microdisplacement is 0.306 nm/µm in the sensing range of 0 to 200 μm and that the temperature sensitivity is 0.165 nm/°C, respectively. The proposed curvature sensor has the advantages of a compact structure, extensive spectrum of dynamic measurement, high sensitivity, and simple preparation, and has a wide range of potential applications in the fields of structural safety monitoring, aviation industry, and resource exploration.
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Affiliation(s)
- Yaxun Zhang
- Qingdao Innovation and Development Center, Harbin Engineering University, Qingdao 266500, China
- Key Lab of In-Fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin 150001, China
- Key Laboratory of Photonic Materials and Device Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, Harbin Engineering University, Harbin 150001, China
| | - Yuxin Liu
- Qingdao Innovation and Development Center, Harbin Engineering University, Qingdao 266500, China
- Key Lab of In-Fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin 150001, China
- Key Laboratory of Photonic Materials and Device Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, Harbin Engineering University, Harbin 150001, China
| | - Zhiliang Huang
- Qingdao Innovation and Development Center, Harbin Engineering University, Qingdao 266500, China
- Key Lab of In-Fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin 150001, China
- Key Laboratory of Photonic Materials and Device Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, Harbin Engineering University, Harbin 150001, China
| | - Pingbang Huang
- Qingdao Innovation and Development Center, Harbin Engineering University, Qingdao 266500, China
- Key Lab of In-Fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin 150001, China
- Key Laboratory of Photonic Materials and Device Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, Harbin Engineering University, Harbin 150001, China
| | - Xiaoyun Tang
- Qingdao Innovation and Development Center, Harbin Engineering University, Qingdao 266500, China
- Key Lab of In-Fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin 150001, China
- Key Laboratory of Photonic Materials and Device Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, Harbin Engineering University, Harbin 150001, China
- College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
| | - Zhihai Liu
- Key Lab of In-Fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin 150001, China
- Key Laboratory of Photonic Materials and Device Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, Harbin Engineering University, Harbin 150001, China
| | - Yu Zhang
- Key Lab of In-Fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin 150001, China
- Key Laboratory of Photonic Materials and Device Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, Harbin Engineering University, Harbin 150001, China
| | - Libo Yuan
- Key Lab of In-Fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin 150001, China
- College of Photonic and Electronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China
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