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1 November 2011 Modal analysis of a large-mode area photonic crystal fiber amplifier using spectral-resolved imaging
Marko Laurila, Jesper Lægsgaard, Thomas Tanggaard Alkeskjold, Jes Broeng
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Optical Engineering, Vol. 50, Issue 11, 111604 (November 2011). https://doi.org/10.1117/1.3609816
Abstract
We perform modal characterization on an ytterbium-doped large mode area photonic-crystal-fiber (PCF) amplifier using spatial and spectral (S2) 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-μm 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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Marko Laurila, Jesper Lægsgaard, Thomas Tanggaard Alkeskjold, and Jes Broeng "Modal analysis of a large-mode area photonic crystal fiber amplifier using spectral-resolved imaging," Optical Engineering 50(11), 111604 (1 November 2011). https://doi.org/10.1117/1.3609816
Published: 1 November 2011
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Cited by 8 scholarly publications.
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KEYWORDS
Optical fibers
Photonic crystal fibers
Fiber amplifiers
Optical amplifiers
Modal analysis
Fourier transforms
Imaging systems
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