Wavelength dependence of the polarization singularities in a two-mode optical fiber
Wavelength dependence of the polarization singularities in a two-mode optical fiber
We present here an experimental demonstration of the wavelength dependence of the polarization singularities due to linear combination of the vector modes excited directly in a two-mode optical fiber. The coherent superposition of the vector modes excited by linearly polarized Gaussian beam as offset skew rays propagated in a helical path inside the fiber results in the generation of phase singular beams with edge dislocation in the fiber output. The polarization character of these beams is found to change dramatically with wavelength—from left-handed elliptically polarized edge dislocation to right-handed elliptically polarized edge-dislocation through disclinations. The measured behaviour is understood as being due to intermodal dispersion of the polarization corrections to the propagating vector modes, as the wavelength of the input beam is scanned.
Inavalli, V.V.G. Krishna
db7ab576-a272-4f04-b938-3d1772ffbd01
7 September 2011
Inavalli, V.V.G. Krishna
db7ab576-a272-4f04-b938-3d1772ffbd01
Inavalli, V.V.G. Krishna
(2011)
Wavelength dependence of the polarization singularities in a two-mode optical fiber.
International Journal of Optics, 2012.
(doi:10.1155/2012/358093).
Abstract
We present here an experimental demonstration of the wavelength dependence of the polarization singularities due to linear combination of the vector modes excited directly in a two-mode optical fiber. The coherent superposition of the vector modes excited by linearly polarized Gaussian beam as offset skew rays propagated in a helical path inside the fiber results in the generation of phase singular beams with edge dislocation in the fiber output. The polarization character of these beams is found to change dramatically with wavelength—from left-handed elliptically polarized edge dislocation to right-handed elliptically polarized edge-dislocation through disclinations. The measured behaviour is understood as being due to intermodal dispersion of the polarization corrections to the propagating vector modes, as the wavelength of the input beam is scanned.
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Accepted/In Press date: 7 July 2011
Published date: 7 September 2011
Additional Information:
Copyright © 2012 V. V. G. Krishna Inavalli et al.
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Local EPrints ID: 468051
URI: http://eprints.soton.ac.uk/id/eprint/468051
PURE UUID: 3f5e1b10-c7c6-4e43-93e9-309ffb387069
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Date deposited: 28 Jul 2022 18:51
Last modified: 17 Mar 2024 04:04
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Author:
V.V.G. Krishna Inavalli
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