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Updated: Dec 27, 2025

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Published on: August 5, 2013

Optothermal dynamics in whispering-gallery microresonators.

Xuefeng Jiang¹, Lan Yang¹

¹Department of Electrical and System Engineering, Washington University in St. Louis, St. Louis, MO 63130 USA.

Light, Science & Applications

|March 6, 2020

Summary

This summary is machine-generated.

This review explores thermal effects in optical whispering-gallery-mode microresonators. Understanding these thermal behaviors is key for advancing photonics applications and thermal stability.

Keywords:

Microresonators Nonlinear optics Photonic devices

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Published on: April 4, 2016

Area of Science:

Photonics and optical physics
Micro- and nanophotonics
Resonator science

Background:

Whispering-gallery-mode (WGM) microresonators are crucial for modern physics, enabling applications in nonlinear optics, optomechanics, quantum optics, and information processing.
High-quality factors and small mode volumes characterize these resonators, making them sensitive to thermal effects.
Thermal behaviors, arising from power buildup or environmental changes, are inherent to WGM resonators and significantly impact their performance.

Purpose of the Study:

To review the mechanisms of laser-field-induced thermal nonlinear effects in WGM microresonators.
To discuss applications leveraging thermal effects, such as optothermal spectroscopy and optical nonreciprocity.
To explore techniques for achieving thermal stability in high-quality-factor resonator systems.

Main Methods:

Discussion of thermal bistability and thermal oscillation mechanisms.
Analysis of how environmental temperature tuning shifts resonant mode frequencies.
Brief review of thermal locking and thermal imaging techniques.

Main Results:

Demonstration of optothermal spectroscopy and optical nonreciprocity using thermal bistability.
Identification of thermal effects as critical for resonator operation and applications.
Highlighting the potential for thermal sensing and tuning via resonant frequency shifts.

Conclusions:

Thermal nonlinear effects in WGM microresonators are fundamental to their operation and applications.
Understanding and controlling thermal behaviors are essential for advancing photonic devices.
Various techniques exist to manage thermal stability in high-quality-factor resonator systems.