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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

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Published on: April 4, 2017

Programmable wavelength filter with double ring loaded MZI.

Mi Wang^1,2, Xiangfeng Chen^1,2, Umar Khan^1,2

¹Photonic Research Group, Department of Information Technology, Ghent University - IMEC, Ghent, Belgium.

Scientific Reports

|January 28, 2022

Summary

This summary is machine-generated.

We developed a novel programmable filter circuit using a double ring resonator and balanced Mach-Zehnder interferometer (MZI). This design offers enhanced configurability and utilizes global optimization for filter synthesis, demonstrated in both simulation and experiments.

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Area of Science:

Photonics and Optical Engineering
Integrated Optics
Signal Processing

Background:

Conventional ring-loaded Mach-Zehnder interferometer (MZI) filters offer specific optical responses.
Achieving high-order filtering and programmability often requires complex designs or limitations.
Dispersion effects can degrade the performance of optical filter circuits.

Purpose of the Study:

To introduce a novel, highly configurable optical filter circuit.
To demonstrate the application of global optimization strategies for filter synthesis and programming.
To reduce dispersion effects in advanced optical filter designs.

Main Methods:

Integration of a double ring resonator with a balanced Mach-Zehnder interferometer (MZI).
Development and application of combined local and global optimization strategies for filter programming.
Implementation of two-stage input and output couplers to mitigate dispersion.
Testing through simulations and experimental validation.

Main Results:

The proposed circuit achieves a response equivalent to a conventional ring-loaded MZI filter with enhanced flexibility.
Cascading the second-order filter enables the realization of higher-order filters.
Successful application of global optimization for Autoregressive Moving Average (ARMA) filter synthesis and simulation.
Experimental demonstration of the programmable filter circuit using the developed optimization strategy.

Conclusions:

The novel double ring resonator-balanced MZI filter offers superior configurability and performance.
Global optimization is a viable and effective method for synthesizing and programming advanced optical filters.
The demonstrated technique is practical for realizing programmable optical filter circuits with reduced dispersion.