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Discrete cylindrical vector beam generation from an array of optical fibers

, , , and . Opt. Express, 17 (16): 13982--13988 (August 2009)
DOI: 10.1364/OE.17.013982

Abstract

A novel method is presented for the beam shaping of farfield intensity distributions of coherently combined fiber arrays. The fibersare arranged uniformly on the perimeter of a circle, and the linearlypolarized beams of equal shape are superimposed such that the far fieldpattern represents an effective radially polarized vector beam, or discretecylindrical vector (DCV) beam. The DCV beam is produced by three ormore beams that each individually have a varying polarization vector. Thebeams are appropriately distributed in the near field such that the far fieldintensity distribution has a central null. This result is in contrast to the situationof parallel linearly polarized beams, where the intensity peaks on axis.

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