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Related Experiment Video

Updated: Sep 11, 2025

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

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Micro-ring wavelength selective switch device based on contra-DC.

Xixi Chu, Yuqing Song, Rongquan Chen

|August 12, 2025

Summary

This summary is machine-generated.

This study introduces a novel micro-ring wavelength selective switch using a contra-directional coupler and GST material. This device enables efficient wavelength selection and switching for optical networks without free spectral range limitations.

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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

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Published on: April 4, 2017

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Published on: December 15, 2021

Area of Science:

Photonics and Optical Engineering
Materials Science for Optoelectronics
Integrated Optics

Background:

Micro-ring resonators are key components in optical communication systems.
Existing wavelength selection methods face limitations like free spectral range.
Phase-change materials offer tunable optical properties for advanced devices.

Purpose of the Study:

To present a novel micro-ring wavelength selective switch device.
To overcome the free spectral range limitation in wavelength selection.
To demonstrate wavelength switching using a phase-change material.

Main Methods:

Utilizing a contra-directional coupler (contra-DC) to form a transparent window.
Integrating Germanium-Antimony-Tellurium (GST) phase-change material onto a micro-ring resonator.
Employing 3D finite-difference method for device simulation.

Main Results:

The device achieves wavelength selection by exploiting the GST's tunable optical properties.
Demonstrated a 3 dB bandwidth of 1.6 nm and a side lobe suppression ratio of 20 dB for wavelength selection.
Achieved an extinction ratio of approximately 14.7 dB and a side lobe suppression ratio of 18.2 dB for switching.

Conclusions:

The novel micro-ring wavelength selective switch effectively selects and switches wavelengths.
The device's performance is suitable for optical interconnection networks.
The use of GST offers a promising approach for tunable optical devices.