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Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

High speed cross-amplitude modulation in concatenated SOA-EAM-SOA.

Ciaran S Cleary¹, Robert J Manning

¹Photonic Systems Group, Tyndall National Institute & Department of Physics, University College Cork, Lee Maltings, Cork, Ireland. ciaran.cleary@tyndall.ie

|June 21, 2012

Summary

We achieved near-ideal high-speed amplitude impulse response using a semiconductor optical amplifier-electroabsorption modulator-semiconductor optical amplifier (SOA-EAM-SOA) configuration. This configuration demonstrated rapid 10 ps amplitude recovery, crucial for high-speed optical communications.

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Area of Science:

Optoelectronics
Semiconductor devices
Optical communications

Background:

Semiconductor optical amplifiers (SOAs) and electroabsorption modulators (EAMs) are key components in optical communication systems.
Achieving fast amplitude recovery is essential for high-speed data transmission.

Purpose of the Study:

To investigate the high-speed amplitude impulse response of an SOA-EAM-SOA configuration.
To identify methods for optimizing amplitude recovery time and modulation depth.

Main Methods:

Utilized pump-probe measurements to analyze the impulse response.
Varied signal wavelength, SOA current biases, and EAM reverse bias voltages.
Employed experimental data and impulse response modeling.

Main Results:

Observed near-ideal high-speed amplitude impulse response under optimum conditions.
Achieved amplitude recovery times as low as 10 ps with modulation depths up to 70%.
Demonstrated control over system behavior via wavelength, bias voltages, and currents.

Conclusions:

The SOA-EAM-SOA configuration enables rapid amplitude recovery.
Cross-absorption modulation and self-gain modulation effectively negate slow gain recovery tails.
This configuration holds promise for advanced high-speed optical communication systems.