Modal analysis of a large-mode area photonic crystal fiber amplifier using spectral-resolved imaging

Marko Laurila; Thomas T. Alkeskjold; Jesper Lægsgaard; Jes Broeng

doi:10.1117/1.3609816

Modal analysis of a large-mode area photonic crystal fiber amplifier using spectral-resolved imaging

Marko Laurila, Thomas T. Alkeskjold, Jesper Lægsgaard, Jes Broeng

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Abstract

We perform modal characterization on an ytterbium-doped large mode area photonic-crystal-fiber (PCF) amplifier using spatial and spectral (S 2) resolved imaging and compare results to conventional cutoff methods. We apply numerical simulations and step-index fiber experiments to calibrate our mathematical and experimental routines of our S2 imaging system. We systematically analyze higher-order-mode (HOM) content of a polarizing 40-m core double-clad PCF amplifier with various launching and coiling configurations. We demonstrate a HOM suppression of more than -24 dB with variance of 2.3 dB. © 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

Original language	English
Journal	Optical Engineering
Volume	50
Issue number	11
Pages (from-to)	111604
ISSN	0091-3286
DOIs	https://doi.org/10.1117/1.3609816
Publication status	Published - 2011

Bibliographical note

Copyright 2011 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

Keywords

Spectral resolved imaging
Photonic crystal fibers

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title = "Modal analysis of a large-mode area photonic crystal fiber amplifier using spectral-resolved imaging",

abstract = "We perform modal characterization on an ytterbium-doped large mode area photonic-crystal-fiber (PCF) amplifier using spatial and spectral (S 2) resolved imaging and compare results to conventional cutoff methods. We apply numerical simulations and step-index fiber experiments to calibrate our mathematical and experimental routines of our S2 imaging system. We systematically analyze higher-order-mode (HOM) content of a polarizing 40-m core double-clad PCF amplifier with various launching and coiling configurations. We demonstrate a HOM suppression of more than -24 dB with variance of 2.3 dB. {\textcopyright} 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).",

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note = "Copyright 2011 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.",

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AU - Laurila, Marko

AU - Alkeskjold, Thomas T.

AU - Lægsgaard, Jesper

AU - Broeng, Jes

N1 - Copyright 2011 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

PY - 2011

Y1 - 2011

N2 - We perform modal characterization on an ytterbium-doped large mode area photonic-crystal-fiber (PCF) amplifier using spatial and spectral (S 2) resolved imaging and compare results to conventional cutoff methods. We apply numerical simulations and step-index fiber experiments to calibrate our mathematical and experimental routines of our S2 imaging system. We systematically analyze higher-order-mode (HOM) content of a polarizing 40-m core double-clad PCF amplifier with various launching and coiling configurations. We demonstrate a HOM suppression of more than -24 dB with variance of 2.3 dB. © 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

AB - We perform modal characterization on an ytterbium-doped large mode area photonic-crystal-fiber (PCF) amplifier using spatial and spectral (S 2) resolved imaging and compare results to conventional cutoff methods. We apply numerical simulations and step-index fiber experiments to calibrate our mathematical and experimental routines of our S2 imaging system. We systematically analyze higher-order-mode (HOM) content of a polarizing 40-m core double-clad PCF amplifier with various launching and coiling configurations. We demonstrate a HOM suppression of more than -24 dB with variance of 2.3 dB. © 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

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KW - Photonic crystal fibers

U2 - 10.1117/1.3609816

DO - 10.1117/1.3609816

M3 - Journal article

SN - 0091-3286

VL - 50

SP - 111604

JO - Optical Engineering

JF - Optical Engineering

IS - 11

ER -

Modal analysis of a large-mode area photonic crystal fiber amplifier using spectral-resolved imaging

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