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Proceedings Paper

Designing semiconductor optical amplifiers for low multichannel gain crosstalk
Author(s): Keith J. Kasunic; Kostas Tastavridis; Michel Lestrade; Alain Champagne; Romain Maciejko
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Paper Abstract

Gain crosstalk in semiconductor optical amplifiers (SOAs) developed for WDM networks has in the past been a limiting factor in SOA deployment. One recently-proposed solution is the gain-clamped SOA, where the amplifier gain is stabilized in a complex cross-cavity configuration. In this paper, we describe the design of conventional SOAs for low multi-channel gain crosstalk (GXT). Specifically, we compare alternatives for reducing crosstalk, including reductions in SOA length, current density, and the number of quantum wells. Numerical modeling shows the reduction in well number to have the largest impact; experimental result for a 4-well device show 2-channel GXT of -20 dB at a modulation frequency of 10 GHz, a fiber-coupled output power of +5 dBm (+2 dBm per channel), and a module gain of 15 dB.

Paper Details

Date Published: 15 December 2003
PDF: 8 pages
Proc. SPIE 5260, Applications of Photonic Technology 6, (15 December 2003); doi: 10.1117/12.543843
Show Author Affiliations
Keith J. Kasunic, Bookham Technology (Canada)
Kostas Tastavridis, Nortel Networks (United Kingdom)
Michel Lestrade, Ecole Polytechnique de Montreal (Canada)
Alain Champagne, Ecole Polytechnique de Montreal (Canada)
Romain Maciejko, Ecole Polytechnique de Montreal (Canada)

Published in SPIE Proceedings Vol. 5260:
Applications of Photonic Technology 6
Roger A. Lessard; George A. Lampropoulos, Editor(s)

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