Year
Month
(Peer-Reviewed) Exceptional-point-enhanced sensing in an all-fiber bending sensor
Zheng Li 李铮 ¹, Jingxu Chen 陈敬旭 ¹, Lingzhi Li 李凌志 ¹, Jiejun Zhang 张杰君 ¹, Jianping Yao 姚建平 ¹ ²
¹ Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 510632, China
中国 广州 暨南大学光子技术研究院 广东省光纤传感与通信技术重点实验室
² Microwave Photonics Research Laboratory, School of Electrical Engineering and Computer Science, University of Ottawa, Ottawa, ON K1N 6N5, Canada
Opto-Electronic Advances, 2023-12-12
Abstract

An exceptional-point (EP) enhanced fiber-optic bending sensor is reported. The sensor is implemented based on parity-time (PT)-symmetry using two coupled Fabry-Perot (FP) resonators consisting of three cascaded fiber Bragg gratings (FBGs) inscribed in an erbium-ytterbium co-doped fiber (EYDF). The EP is achieved by controlling the pumping power to manipulate the gain and loss of the gain and loss FP resonators.

Once a bending force is applied to the gain FP resonator to make the operation of the system away from its EP, frequency splitting occurs, and the frequency spacing is a nonlinear function of the bending curvature, with an increased slope near the EP. Thus, by measuring the frequency spacing, the bending information is measured with increased sensitivity.

To achieve high-speed and high-resolution interrogation, the optical spectral response of the sensor is converted to the microwave domain by implementing a dual-passband microwave-photonic filter (MPF), with the spacing between the two passbands equal to that of the frequency splitting.

The proposed sensor is evaluated experimentally. A curvature sensing range from 0.28 to 2.74 m⁻¹ is achieved with an accuracy of 7.56×10⁻⁴ m⁻¹ and a sensitivity of 1.32 GHz/m⁻¹, which is more than 4 times higher than those reported previously.
Exceptional-point-enhanced sensing in an all-fiber bending sensor_1
Exceptional-point-enhanced sensing in an all-fiber bending sensor_2
Exceptional-point-enhanced sensing in an all-fiber bending sensor_3
Exceptional-point-enhanced sensing in an all-fiber bending sensor_4
  • Applications of lasers: A promising route toward low-cost fabrication of high-efficiency full-color micro-LED displays
  • Shouqiang Lai, Shibiao Liu, Zilu Li, Zhening Zhang, Zhong Chen, Rong Zhang, Hao-Chung Kuo, Tingzhu Wu
  • Opto-Electronic Science
  • 2023-12-06
  • Light-stimulated adaptive artificial synapse based on nanocrystalline metal-oxide film
  • Igor S. Balashov, Alexander A. Chezhegov, Artem S. Chizhov, Andrey A. Grunin, Konstantin V. Anokhin, Andrey A. Fedyanin
  • Opto-Electronic Science
  • 2023-12-06
  • Integrated photonic convolution acceleration core for wearable devices
  • Baiheng Zhao, Junwei Cheng, Bo Wu, Dingshan Gao, Hailong Zhou, Jianji Dong
  • Opto-Electronic Science
  • 2023-11-28
  • Optical trapping of optical nanoparticles: Fundamentals and applications
  • Fengchan Zhang, Pablo Camarero, Patricia Haro-González, Lucía Labrador-Páez, Daniel Jaque
  • Opto-Electronic Science
  • 2023-11-15
  • Pattern recognition in multi-synaptic photonic spiking neural networks based on a DFB-SA chip
  • Yanan Han, Shuiying Xiang, Ziwei Song, Shuang Gao, Xingxing Guo, Yahui Zhang, Yuechun Shi, Xiangfei Chen, Yue Hao
  • Opto-Electronic Science
  • 2023-11-15
  • Ferroelectrically modulate the Fermi level of graphene oxide to enhance SERS response
  • Mingrui Shao, Chang Ji, Jibing Tan, Baoqiang Du, Xiaofei Zhao, Jing Yu, Baoyuan Man, Kaichen Xu, Chao Zhang, Zhen Li
  • Opto-Electronic Advances
  • 2023-11-15
  • Photonic integrated neuro-synaptic core for convolutional spiking neural network
  • Shuiying Xiang, Yuechun Shi, Yahui Zhang, Xingxing Guo, Ling Zheng, Yanan Han, Yuna Zhang, Ziwei Song, Dianzhuang Zheng, Tao Zhang, Hailing Wang, Xiaojun Zhu, Xiangfei Chen, Min Qiu, Yichen Shen, Wanhua Zheng, Yue Hao
  • Opto-Electronic Advances
  • 2023-11-15
  • Paper-based WS₂ photodetectors fabricated by all-dry techniques
  • Francesco Pieri, Gianluca Fiori
  • Opto-Electronic Advances
  • 2023-11-15
  • Spatiotemporal hemodynamic monitoring via configurable skin-like microfiber Bragg grating group
  • Hengtian Zhu, Junxian Luo, Qing Dai, Shugeng Zhu, Huan Yang, Kanghu Zhou, Liuwei Zhan, Biao Xu, Ye Chen, Yanqing Lu, Fei Xu
  • Opto-Electronic Advances
  • 2023-11-15
  • Physics-data-driven intelligent optimization for large-aperture metalenses
  • Yingli Ha, Yu Luo, Mingbo Pu, Fei Zhang, Qiong He, Jinjin Jin, Mingfeng Xu, Yinghui Guo, Xiaogang Li, Xiong Li, Xiaoliang Ma, Xiangang Luo
  • Opto-Electronic Advances
  • 2023-11-15
  • Metasurfaces for near-eye display applications
  • Yan Li, Xiaojin Huang, Shuxin Liu, Haowen Liang, Yuye Ling1, Yikai Su
  • Opto-Electronic Science
  • 2023-10-31
  • A review of liquid crystal spatial light modulators: devices and applications
  • Yiqian Yang, Andrew Forbes, Liangcai Cao
  • Opto-Electronic Science
  • 2023-10-31



  • Deep learning enabled single-shot absolute phase recovery in high-speed composite fringe pattern profilometry of separated objects                                All-optical object identification and three-dimensional reconstruction based on optical computing metasurface
    About
    |
    Contact
    |
    Copyright © PubCard