Related Experiment Video
Updated: Mar 10, 2026
08:12
Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing
Published on: March 13, 2013
13.2K
Ringing phenomenon in chaotic microcavity for high-speed ultra-sensitive sensing
Lei Chen1,2, Qian Liu2, Wei-Gang Zhang1
1Key laboratory of Optical Information Science and Technology, Ministry of Education, Institute of Modern Optics, Nankai University, Tianjin 300071, China.
Scientific Reports
|December 15, 2016
Summary
This study introduces chaotic whispering-gallery-mode (WGM) microcavities for enhanced sensing. By breaking symmetry, these chaotic WGM microcavities achieve higher sensitivity and faster detection without fiber couplers.
Area of Science:
- Optics and Photonics
- Sensing Technologies
- Microcavity Physics
Background:
- Whispering-gallery-mode (WGM) microcavities offer potential for sensitive and high-speed sensing applications.
- Traditional symmetric WGM microcavities exhibit low free-space coupling efficiency due to non-directional emission.
Purpose of the Study:
- To develop a novel approach for high-speed, ultra-sensitive sensing using the ringing phenomenon in chaotic WGM microcavities.
- To overcome the limitations of low coupling efficiency in traditional WGM microcavities.
Main Methods:
- Breaking the rotational symmetry of WGM microcavities to induce chaotic behavior.
- Utilizing the ringing phenomenon in a chaotic regime for analyte interaction.
Main Results:
- Chaotic WGM microcavities extend the ringing phenomenon over positive and negative frequency detuning, broadening bandwidth and reducing dead time.
- Directional coupling in chaotic microcavities significantly increases signal output.
- Achieved improved sensitivity without the need for a fiber coupler.
Conclusions:
- Chaotic WGM microcavities represent a promising advancement for high-speed and ultra-sensitive sensing.
- The directional coupling and extended frequency detuning of chaotic WGM microcavities enhance sensing performance.
