Abstract

The spatial modes of a 1 km elliptical core few-mode optical fiber (6 spatial modes) are analyzed by using liquid crystal on silicon spatial light modulators to measure the fiber’s mode crosstalk matrix in Hermite–Gaussian, Laguerre–Gaussian, and linearly polarized spatial mode bases. It is shown that the fiber’s spatial modes can be described by Hermite–Gaussian modes, which can propagate 1 km over the optical fiber with <20  dB (1%) average mode crosstalk even when the fiber has multiple 1 cm diameter bends. The use of elliptical core few-mode optical fibers for space division multiplexing in data centers is discussed.

© 2016 Optical Society of America

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