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Updated: Aug 23, 2025
12:18
Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
17.1K
Dynamic manipulation of WGM lasing by tailoring the coupling strength
Optics Express
|October 27, 2022
Summary
Researchers demonstrate dynamic control over microfiber laser modes. By adjusting coupling strength in a novel microfiber cavity, they achieved tunable single-mode lasing, crucial for compact photonic devices.
Area of Science:
- Photonics and Optical Engineering
- Materials Science
Background:
- Miniaturized lasing is essential for compact photonic devices.
- Dynamic manipulation of whispering gallery mode lasing remains a significant challenge.
Purpose of the Study:
- To design and demonstrate a quasi-three-dimensional coupled cavity for dynamic lasing mode manipulation.
- To achieve flexible control over lasing modes in microfiber resonators.
Main Methods:
- Utilized a micromanipulation technique to create coupled cavities from intersecting polymer microfibers.
- Investigated the mode selection mechanism experimentally and theoretically.
- Controlled coupling strength by adjusting the coupling angle and distance.
Main Results:
- Successfully demonstrated dynamic manipulation from multiple lasing modes to single-mode lasing.
- Quantitatively controlled the coupling strength through physical adjustments of the microfiber intersection.
- Validated the mode selection mechanism in the coupled microfiber cavity.
Conclusions:
- The developed coupled microfiber cavity offers a flexible method for lasing mode modulation.
- This approach provides a viable alternative for on-chip photonic integration.
- Enables dynamic control over lasing modes, enhancing the versatility of photonic devices.
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