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Updated: Jul 9, 2026
12:21
Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
Published on: April 4, 2016
Multimode resonances in square-shaped optical microcavities.
Optics Letters
|November 28, 2007
Summary
Researchers studied square-shaped optical microcavities for dense wavelength-division multiplexing filters. They observed multimode resonances in larger microcavities, suggesting smaller ones may offer single-mode filtering.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Optical microcavities are crucial for wavelength-division multiplexing.
- Two-dimensional square microcavities offer potential for novel filter applications.
Purpose of the Study:
- Investigate square-shaped optical microcavities for dense wavelength-division multiplexing (DWDM) filter applications.
- Analyze cavity resonances and mode behavior in two-dimensional microcavities.
Main Methods:
- Fabrication of square-shaped microcavities in fused silica.
- Elastic scattering measurements to observe cavity resonances.
- Two-dimensional k-space analysis to model cavity modes and trajectories.
Main Results:
- Observed multimode cavity resonances in approximately 200-microm square microcavities.
- Mode spectrum explained by normal modes and total internal reflection.
- Cavity-mode trajectories do not require closure after each round trip.
Conclusions:
- Square-shaped microcavities exhibit multimode behavior.
- Smaller microcavities are predicted to yield single-mode spectra, suitable for DWDM filters.
- The study provides insights into optical microcavity design for telecommunications.
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