2018/04/30 by Xuefeng Jiang, Abraham J. Qavi, Steven H. Huang +1 · 348 citations
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Computer science #Materials science #Mechanical and Optical Resonators #Microfluidics #Microscale chemistry #Nanotechnology #Optical sensing #Optoelectronics #Photonic and Optical Devices #Physics #Resonator #Whispering-gallery wave #physics.optics
paper · pdf · doi:10.1016/j.matt.2020.07.008
published in Matter 3(2), 371-392 (Elsevier BV) · 43 pages, 17 figures
arxiv created 2018/04/30 · openalex publication_date 2020/08/01 · arxiv updated 2021/07/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Optical whispering gallery mode (WGM) microresonators, confining resonant photons in a microscale resonator for long periods of time, could strongly enhance light-matter interaction, making it an ideal platform for all kinds of sensors. In this paper, an overview of optical sensors based on WGM microresonators is comprehensively summarized. First, the fundamental sensing mechanisms as well as several recently developed enhanced sensing techniques are introduced. Then, different types of WGM structures for sensing as well as microfluidics techniques are summarized. Furthermore, several important sensing parameters are discussed. Most importantly, a variety of WGM sensing applications are reviewed, including both traditional matter sensing and field sensing. Last, we give a brief summary and perspective of the WGM sensors and their role in future applications.