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Proceedings Paper

Gain control dynamics of thulium-doped fiber amplifier at 2 µm
Author(s): M. A. Khamis; K. Ennser
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Paper Abstract

This work is novel in that it explains the modeling and simulation of a thulium-doped fiber amplifier (TDFA) in a reconfigurable wavelength division multiplexing (WDM) system operating at 2 μm. We use the optical gain-clamping technique in order to control gain amplification and eliminate deleterious channel power fluctuations resulting from input power variation at the TDFA. The investigated system consists of 12 channels with -4 dBm total input power. Simulation results indicate that approximately1.5dB power excursion is produced after dropping 11 channels in unclamped-gain amplifier, and only 0.005 dB in a clamped-gain amplifier. Additionally, a clamped configuration brings the power excursion from 4.2 dB to under 0.08 dB, after adding 11 channels to the investigated system. Hence, optical gainclamping is a simple and robust technique for controlling the power transient in amplifiers at 2 μm.

Paper Details

Date Published: 24 February 2016
PDF: 7 pages
Proc. SPIE 9744, Optical Components and Materials XIII, 974419 (24 February 2016); doi: 10.1117/12.2212386
Show Author Affiliations
M. A. Khamis, Swansea Univ. (United Kingdom)
K. Ennser, Swansea Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 9744:
Optical Components and Materials XIII
Shibin Jiang; Michel J. F. Digonnet, Editor(s)

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