中国物理B ›› 2021, Vol. 30 ›› Issue (11): 118103-118103.doi: 10.1088/1674-1056/ac11d0

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Tunable and highly sensitive temperature sensor based on graphene photonic crystal fiber

Xu Cheng(程旭)1, Xu Zhou(周旭)2,3, Chen Huang(黄琛)1, Can Liu(刘灿)1, Chaojie Ma(马超杰)1, Hao Hong(洪浩)1, Wentao Yu(于文韬)1,‡, Kaihui Liu(刘开辉)1,4,†, and Zhongfan Liu(刘忠范)3,5,§   

  1. 1 State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China;
    2 Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China;
    3 Beijing Graphene Institute(BGI), Beijing 100095, China;
    4 International Centre for Quantum Materials, Collaborative Innovation Center of Quantum Matter, Beijing 100871, China;
    5 Center for Nanochemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
  • 收稿日期:2021-06-10 修回日期:2021-06-25 接受日期:2021-07-07 出版日期:2021-10-13 发布日期:2021-10-22
  • 通讯作者: Wentao Yu, Kaihui Liu, Zhongfan Liu E-mail:khliu@pku.edu.cn;wtyu@pku.edu.cn;zfliu@pku.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 52021006, 52025023, 51991342, and 11888101), the Key R&D Program of Guangdong Province, China (Grant Nos. 2019B010931001, 2020B010189001, and 2018B030327001), the Pearl River Talent Recruitment Program of Guangdong Province, China (Grant No. 2019ZT08C321), the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB33000000), Beijing Natural Science Foundation, China (Grant No. JQ19004), Beijing Municipal Science & Technology Commission, China (Grant No. Z181100004818003), the China Postdoctoral Science Foundation (Grant No. 2020M680177), National Postdoctoral Program for Innovative Talents of China (Grant No. BX20190016), and China Postdoctoral Science Foundation (Grant No. 2019M660280).

Tunable and highly sensitive temperature sensor based on graphene photonic crystal fiber

Xu Cheng(程旭)1, Xu Zhou(周旭)2,3, Chen Huang(黄琛)1, Can Liu(刘灿)1, Chaojie Ma(马超杰)1, Hao Hong(洪浩)1, Wentao Yu(于文韬)1,‡, Kaihui Liu(刘开辉)1,4,†, and Zhongfan Liu(刘忠范)3,5,§   

  1. 1 State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China;
    2 Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China;
    3 Beijing Graphene Institute(BGI), Beijing 100095, China;
    4 International Centre for Quantum Materials, Collaborative Innovation Center of Quantum Matter, Beijing 100871, China;
    5 Center for Nanochemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
  • Received:2021-06-10 Revised:2021-06-25 Accepted:2021-07-07 Online:2021-10-13 Published:2021-10-22
  • Contact: Wentao Yu, Kaihui Liu, Zhongfan Liu E-mail:khliu@pku.edu.cn;wtyu@pku.edu.cn;zfliu@pku.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 52021006, 52025023, 51991342, and 11888101), the Key R&D Program of Guangdong Province, China (Grant Nos. 2019B010931001, 2020B010189001, and 2018B030327001), the Pearl River Talent Recruitment Program of Guangdong Province, China (Grant No. 2019ZT08C321), the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB33000000), Beijing Natural Science Foundation, China (Grant No. JQ19004), Beijing Municipal Science & Technology Commission, China (Grant No. Z181100004818003), the China Postdoctoral Science Foundation (Grant No. 2020M680177), National Postdoctoral Program for Innovative Talents of China (Grant No. BX20190016), and China Postdoctoral Science Foundation (Grant No. 2019M660280).

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摘要： Optical fiber temperature sensors have been widely employed in enormous areas ranging from electric power industry, medical treatment, ocean dynamics to aerospace. Recently, graphene optical fiber temperature sensors attract tremendous attention for their merits of simple structure and direct power detecting ability. However, these sensors based on transfer techniques still have limitations in the relatively low sensitivity or distortion of the transmission characteristics, due to the unsuitable Fermi level of graphene and the destruction of fiber structure, respectively. Here, we propose a tunable and highly sensitive temperature sensor based on graphene photonic crystal fiber (Gr-PCF) with the non-destructive integration of graphene into the holes of PCF. This hybrid structure promises the intact fiber structure and transmission mode, which efficiently enhances the temperature detection ability of graphene. From our simulation, we find that the temperature sensitivity can be electrically tuned over four orders of magnitude and achieve up to ～ 3.34×10-3 dB/(cm·℃) when the graphene Fermi level is ～ 35 meV higher than half the incident photon energy. Additionally, this sensitivity can be further improved by ～ 10 times through optimizing the PCF structure (such as the fiber hole diameter) to enhance the light-matter interaction. Our results provide a new way for the design of the highly sensitive temperature sensors and broaden applications in all-fiber optoelectronic devices.

关键词: graphene, photonic crystal fiber, temperature sensor, high sensitivity, Fermi level

Abstract: Optical fiber temperature sensors have been widely employed in enormous areas ranging from electric power industry, medical treatment, ocean dynamics to aerospace. Recently, graphene optical fiber temperature sensors attract tremendous attention for their merits of simple structure and direct power detecting ability. However, these sensors based on transfer techniques still have limitations in the relatively low sensitivity or distortion of the transmission characteristics, due to the unsuitable Fermi level of graphene and the destruction of fiber structure, respectively. Here, we propose a tunable and highly sensitive temperature sensor based on graphene photonic crystal fiber (Gr-PCF) with the non-destructive integration of graphene into the holes of PCF. This hybrid structure promises the intact fiber structure and transmission mode, which efficiently enhances the temperature detection ability of graphene. From our simulation, we find that the temperature sensitivity can be electrically tuned over four orders of magnitude and achieve up to ～ 3.34×10-3 dB/(cm·℃) when the graphene Fermi level is ～ 35 meV higher than half the incident photon energy. Additionally, this sensitivity can be further improved by ～ 10 times through optimizing the PCF structure (such as the fiber hole diameter) to enhance the light-matter interaction. Our results provide a new way for the design of the highly sensitive temperature sensors and broaden applications in all-fiber optoelectronic devices.

Key words: graphene, photonic crystal fiber, temperature sensor, high sensitivity, Fermi level

中图分类号:  (Graphene)

  • 81.05.ue
78.67.-n (Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures) 07.07.Df (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing) 42.70.Gi (Light-sensitive materials)