Gain control dynamics of thulium-doped fiber amplifier at 2 µm

M. A. Khamis; K. Ennser

doi:10.1117/12.2212386

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24 February 2016 Gain control dynamics of thulium-doped fiber amplifier at 2 μm

M. A. Khamis, K. Ennser

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Proceedings Volume 9744, Optical Components and Materials XIII; 974419 (2016) https://doi.org/10.1117/12.2212386
Event: SPIE OPTO, 2016, San Francisco, California, United States

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.

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M. A. Khamis and K. Ennser "Gain control dynamics of thulium-doped fiber amplifier at 2 μm", Proc. SPIE 9744, Optical Components and Materials XIII, 974419 (24 February 2016); https://doi.org/10.1117/12.2212386

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