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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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Microring quadrature modulators.

Wesley D Sacher¹, Joyce K S Poon

¹Department of Electrical and Computer Engineering and Institute for Optical Sciences, University of Toronto,10 King's College Road, Toronto, Ontario, M5S 3G4, Canada. wesley.sacher@utoronto.ca

|December 18, 2009

Summary

This summary is machine-generated.

A novel microring resonator modulator offers high-speed, low-distortion signal modulation for advanced communication systems. This device enables efficient M-ary quadrature amplitude modulation and phase-shift keying with reduced drive power.

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Area of Science:

Photonics
Optical Communications
Integrated Optics

Background:

High-performance modulators are crucial for advanced optical communication systems.
Existing modulators face limitations in speed, chirp, distortion, and power consumption.

Purpose of the Study:

To propose and analyze a novel microring resonator modulator.
To achieve low-chirp, low-distortion, and low-drive-power modulation.
To enable high-speed M-ary quadrature amplitude modulation (MQAM) and phase-shift keying (PSK) outputs.

Main Methods:

Integration of a high-Q microring resonator with a dual-2x2 Mach-Zehnder interferometer (MZI) coupler.
Analysis of the modulator's performance characteristics, including chirp, distortion, and modulation rate.

Main Results:

The proposed modulator demonstrates low chirp, low distortion, and low drive power requirements.
The modulation rate significantly exceeds the resonator linewidth.
The device is capable of MQAM and PSK signal generation.

Conclusions:

The integrated microring-MZI modulator is a promising candidate for next-generation optical communication systems.
It offers a pathway to higher data rates and improved signal quality.
Performance is primarily limited by coupler response and free spectral range, not resonator linewidth.