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Updated: Jun 16, 2025
12:18
Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
16.9K
Optical fiber integrated WGM cylindrical cavity resonator.
Optics Letters
|August 15, 2024
Summary
We developed a novel optical fiber whispering gallery mode (WGM) resonator integrated directly into a fiber core. This new WGM resonator offers a simple, low-cost solution for photonics applications.
Area of Science:
- Photonics
- Optical Engineering
- Materials Science
Background:
- Whispering gallery mode (WGM) resonators are typically discrete optical devices.
- Integrating discrete WGM resonators with optical fiber systems presents significant challenges.
Purpose of the Study:
- To present a novel, fiber-integrated optical fiber whispering gallery mode resonator.
- To overcome the integration difficulties of conventional WGM resonators.
Main Methods:
- Fabrication of a cylindrical cavity within a multimode fiber core using femtosecond laser micromachining.
- Employing fast hydrofluoric acid etching techniques for cavity formation.
- Utilizing light coupling into the cylindrical cavity for WGM excitation.
Main Results:
- Successfully created a fully integrated optical fiber WGM resonator.
- Achieved a high quality factor (Q) of 1.06 × 104.
- Demonstrated a simple, cost-effective, and convenient fabrication and operation process.
Conclusions:
- The developed device represents a new type of fiber-integrated WGM resonator.
- This innovation enriches the family of WGM resonators.
- The device shows promising potential for various photonics applications.
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