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Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
Flexible quadrature amplitude modulation with semiconductor optical amplifier and electroabsorption modulator
Bernhard Schrenk1, Stefanos Dris, Paraskevas Bakopoulos
1School of Electrical & Computer Engineering, National Technical University of Athens, Athens, Greece. schrenk@mail.ntua.gr
Optics Letters
|August 4, 2012
Summary
This study demonstrates optical quadrature amplitude modulation (QAM) using a low-complexity modulator. Octary QAM is shown to be suitable for high-bandwidth, long-reach coherent optical access networks.
Area of Science:
- Optical communications
- Modulation techniques
Background:
- Quadrature amplitude modulation (QAM) is a key technology in optical communications.
- Developing low-complexity modulators is crucial for network scalability.
Purpose of the Study:
- To experimentally demonstrate optical QAM with a novel low-complexity modulator.
- To investigate the applicability of octary QAM in coherent optical access networks.
Main Methods:
- Utilized a modulator based on a semiconductor optical amplifier and electroabsorption modulator.
- Achieved flexible amplitude and phase format transmission.
- Investigated octary QAM for 100 km reach and high split compatibility.
Main Results:
- Successful experimental demonstration of optical QAM.
- Verified sustainable 3 Gb/s per-user bandwidth.
- Confirmed compatibility with high split scenarios in access networks.
Conclusions:
- The demonstrated low-complexity modulator enables flexible optical QAM.
- Octary QAM is a viable option for future high-capacity, long-reach coherent optical access networks.
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