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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/14109
Title: Mode group specific amplification length in an asymmetric LPG assisted few-mode EDFA
Authors: Rastogi, Vipul K.
Gaur A.
Aschieri P.
Dussardier B.
Published in: Optics Communications
Abstract: This article presents a scheme for few-mode EDFA, which allows to choose independent amplification lengths for different mode groups. The EDF is a dual concentric core fiber, where the central core is connected to the line FMF and the ring core is doped with erbium to provide amplification. The modes of FMF are launched into the central core of the EDF, are converted into ring modes using LPG for amplification and then converted back into central core modes using another LPG. The distance between the LPGs determines the amplification length. The amplification length, can thus, be chosen for a given mode group. We demonstrate the working of this concept by choosing LP11 and LP21 mode groups of the FMF and show that a suitable choice of amplification lengths for the two mode groups can tailor the differential modal gain (DMG) to any desired value. We demonstrate achieving zero DMG among all the mode of LP11 and LP21 mode groups using this concept while having gain in excess of 20 dB. The study should be useful for optical fiber communication system employing space-division multiplexing (SDM). © 2016 Elsevier B.V.
Citation: Optics Communications (2017), 382(): 13-17
URI: https://doi.org/10.1016/j.optcom.2016.07.060
http://repository.iitr.ac.in/handle/123456789/14109
Issue Date: 2017
Publisher: Elsevier B.V.
Keywords: Dual-core fiber
Erbium-doped fiber amplifier
Few mode fiber
Long period grating
Space Division Multiplexing
ISSN: 304018
Author Scopus IDs: 7006364661
56625626200
7003688088
6701352714
Author Affiliations: Rastogi, V., Department of Physics, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Gaur, A., Department of Physics, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Aschieri, P., Université Nice Sophia Antipolis, CNRS, LPMC, UMR 7336, Nice Cedex 2, 06108, France
Dussardier, B., Université Nice Sophia Antipolis, CNRS, LPMC, UMR 7336, Nice Cedex 2, 06108, France
Corresponding Author: Gaur, A.; Department of Physics, Indian Institute of Technology RoorkeeIndia; email: ankitagaur.phy@gmail.com
Appears in Collections:Journal Publications [PH]

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