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Updated: May 5, 2026
08:01
Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
6.6K
Thermo-optic control of a topological boundary mode
Optics Express
|May 4, 2026
Summary
Thermal perturbations delocalize topological modes in a 1D Su-Schreiffer-Heeger system. This study demonstrates thermo-optic effects influencing chiral symmetry and waveguide transmission using ultra-silicon-rich-nitride.
Area of Science:
- Topological photonics
- Nonlinear optics
- Condensed matter physics
Background:
- Topological modes in 1D Su-Schreiffer-Heeger systems exhibit unique properties.
- Domain walls with non-zero Zak phase are crucial for topological phenomena.
- Thermo-optic effects can alter material refractive indices, impacting optical systems.
Purpose of the Study:
- Investigate thermo-optic-induced delocalization of topological modes.
- Analyze the impact of thermal perturbations on chiral symmetry.
- Explore nonlinear parametric wavelength conversion modulated by thermal effects.
Main Methods:
- Implementation of a 1D Su-Schreiffer-Heeger system on ultra-silicon-rich-nitride (USRN).
- Application of thermal perturbations to the domain wall.
- Experimental characterization of transmission properties and idler modulation.
Main Results:
- Observed thermo-optic-induced delocalization of the topological mode.
- Demonstrated perturbation of chiral symmetry by thermal effects.
- Experimentally verified modulation of nonlinear parametric wavelength conversion.
Conclusions:
- Thermo-optic effects provide a viable mechanism for controlling topological modes.
- USRN material's large thermo-optic coefficient enables significant mode perturbation.
- Potential for thermo-optic modulation in topological photonic devices.
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