Affiliation:
1. College of Information Science and Engineering Northeastern University Shenyang 110819 China
2. State Key Laboratory of Synthetical Automation for Process Industries (Northeastern University) Shenyang 110819 China
3. Hebei Key Laboratory of Micro‐Nano Precision Optical Sensing and Measurement Technology (Northeastern University at Qinhuangdao) Qinhuangdao 066004 China
4. College of Information Science and Engineering Shenyang University of Technology Shenyang 110870 China
Abstract
AbstractIn recent years, compact micro‐/nanofiber sensors with fast response and high resolution have become a hot field in sensing and nanotechnology. In addition to the unique properties of microfibers such as strong evanescent field, low optical loss, and easy integration, microfiber knot resonators further improve the sensing capability due to their resonance properties. The potential high‐quality factor allows higher sensing sensitivity and resolution, which is very attractive for optical sensing at the micro‐/nano scale. More application potential can be effectively stimulated by improving the structure shape or principle or combining with functional sensitive materials. This paper first introduces the preparation process and spectral characteristics of conventional microfiber knots and then focuses on three new types of devices for enhancing the sensing performance, namely material‐coated, shape‐improved, and principle‐extended, and briefly analyzes their spectral properties. In addition, the research progress and applications of these sensors are summarized. Finally, the existing problems in this field are analyzed, and the directions for further development are discussed and prospected.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Liaoning Province
Fundamental Research Funds for the Central Universities
State Key Laboratory of Synthetical Automation for Process Industries
Natural Science Foundation of Hebei Province
Subject
Condensed Matter Physics,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials