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Tailored modal gain in a multi-mode erbium-doped fiber amplifier based on engineered ring doping profiles


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Jin, Cang, Ung, Bora, Messaddeq, Younès and LaRochelle, Sophie. 2013. « Tailored modal gain in a multi-mode erbium-doped fiber amplifier based on engineered ring doping profiles ». In Photonics North 2013 (Ottawa, ON, Canada, June 3, 2013) Coll. « Proceedings of SPIE », vol. 8915. 89150A. USA : SPIE - The International Society for Optical Engineering.
Compte des citations dans Scopus : 23.

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Various space division multiplexing (SDM) schemes are currently investigated as a way to overcome the capacity limit of data links. We here focus on mode division multiplexing (MDM) in a multi-mode fiber (MMF). Towards long-haul data transmission, for which signal amplification is a key enabling component, we investigate a simple approach to precisely control the mode-dependent gain (MDG) between the co-propagating LP01 and LP11 modes of an erbiumdoped few-mode fiber amplifier (MM-EDFA) by engineering a multi-ring doping profile. In practice, the mode dependent loss of the few-mode transmission fiber must be taken into account in order to equalize the gain for all modal channels. In a step towards practical implementation of MM-EDFA for long-haul SDM, we extend the single ring doping approach to incorporate multi-ring and multi-level doping. Through numerical simulations we study the optimization of the width and doping level of each ring so as to control the MDG. We further discuss the possibility of modal gain equalization through zero-differential modal gain (ZDMG) points in a single stage MM-EDFA, or via tuning of pump powers in a dual-stage MM-EDFA configuration.

Item Type: Conference proceeding
ISBN: 0277-786X
Ung, Bora
Affiliation: Autres
Date Deposited: 06 Oct 2014 16:21
Last Modified: 24 Feb 2017 16:17

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