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Related Experiment Video

Updated: May 13, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Published on: August 5, 2013

Generating arbitrary optical signal constellations using microring resonators.

Yossef Ehrlichman¹, Ofer Amrani, Shlomo Ruschin

¹School of Electrical Engineering, Faculty of Engineering, Tel-Aviv University, Tel-Aviv, Israel, 69978. syos@eng.tau.ac.il

|March 14, 2013

Summary

This summary is machine-generated.

Two microresonators in series enable Quadrature Amplitude Modulation (QAM) signal generation by independently optimizing amplitude and phase. This method effectively covers the entire I-Q space for advanced optical modulation.

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Last Updated: May 13, 2026

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Area of Science:

Photonics
Optical Communications
Signal Processing

Background:

Quadrature Amplitude Modulation (QAM) is crucial for high-capacity optical communication systems.
Existing methods for QAM signal generation can be complex and require precise control.
Microresonator-based devices offer potential for miniaturized and efficient optical modulation.

Purpose of the Study:

To demonstrate a novel approach for generating QAM signals using mutually uncoupled microresonators.
To show that independent optimization of microresonators can achieve full I-Q space coverage.
To validate the proposed method through simulation of 16-QAM generation.

Main Methods:

Utilizing two mutually uncoupled microresonators configured in series.
Independently optimizing the first microresonator for amplitude modulation.
Independently optimizing the second microresonator for phase modulation.

Main Results:

The series microresonator configuration successfully covers the entire In-phase and Quadrature (I-Q) space.
The independent optimization strategy allows for effective amplitude and phase control.
Simulation successfully demonstrated the generation of 16-QAM signals.

Conclusions:

A novel and effective method for QAM signal generation using two series microresonators is presented.
This approach simplifies QAM realization by enabling independent amplitude and phase modulation.
The demonstrated 16-QAM generation shows the potential for practical applications in optical communication.