Journal
OPTICS EXPRESS
Volume 23, Issue 13, Pages 17330-17336Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.23.017330
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Funding
- National Research Foundation of South Africa
- African Laser Centre
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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. (C) 2015 Optical Society of America
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