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arXiv · 1505.00524

Fiber propagation of vector modes

Bienvenu Ndagano·Robert Bruning·Melanie McLaren·Michael Duparre·Andrew Forbes
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Abstract

Here we employ both dynamic and geometric phase control of light to produce radially modulated vector-vortex modes, the natural modes of optical fibers. We then measure these modes using a vector modal decomposition set-up as well as a tomography measurement, the latter providing a degree of the non-separability of the vector states, akin to an entanglement measure for quantum states. We demonstrate the versatility of the approach by creating the natural modes of a step-index fiber, which are known to exhibit strong mode coupling, and measure the modal cross-talk and non-separability decay during propagation. Our approach will be useful in mode division multiplexing schemes for transport of classical and quantum states.

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Bienvenu Ndagano, Robert Bruning, Melanie McLaren, Michael Duparre, Andrew Forbes. 2015-05-04. Fiber propagation of vector modes. https://doi.org/10.1364/oe.23.017330

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