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Updated: Jan 11, 2026

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

Published on: May 27, 2013

Reconfigurable chalcogenide integrated nonlinear photonics.

Di Xia^1,2, Liyang Luo^1,2, Linyi Wang^1,2

¹Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems, School of Electrical and Information Technology, Sun Yat-sen University, Guangzhou, 510275, China.

Nature Communications

|November 19, 2025

Summary

This summary is machine-generated.

Researchers developed reconfigurable integrated GeSbS microresonators. This breakthrough allows dynamic dispersion engineering for versatile nonlinear photonic devices, enabling new applications in lasers and light sources.

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Last Updated: Jan 11, 2026

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Area of Science:

Photonics
Materials Science
Nonlinear Optics

Background:

Integrated photonics leverages nonlinear optics for advanced light sources.
Modifying dispersion in nonlinear photonic devices post-fabrication is a significant challenge.
Dispersion dictates phase-matching conditions crucial for nonlinear optical processes.

Purpose of the Study:

To present integrated GeSbS microresonators with arbitrarily reconfigurable dispersion profiles.
To demonstrate a method for dynamic dispersion engineering in integrated photonics.
To enable scalable and reconfigurable nonlinear devices for diverse applications.

Main Methods:

Utilized intracavity backscattering to generate standing wave patterns.
Imprinted or erased Bragg gratings along microresonators via photosensitivity.
Synthesized tunable dispersion from strongly coupled bidirectional resonances via Bragg gratings.

Main Results:

Achieved arbitrary and dynamic reconfiguration of microresonator dispersion profiles.
Demonstrated tunable dispersion for adjusting parametric oscillator sidebands.
Enabled spectral flattening of Kerr microcombs and deterministic generation of Brillouin lasers.

Conclusions:

The developed GeSbS microresonators offer unprecedented control over dispersion.
This technique paves the way for reprogrammable nonlinear photonic devices.
The approach supports scalable integration and broad applicability in photonics.