Abstract

For the first time, to the best of our knowledge, light with orbital angular momentum (OAM) of ±2 per photon is produced using commercially available polarization-maintaining fiber with modal purity of 96%. Twist measurements demonstrate that the average orbital angular momentum can be continuously tuned between ±2. The authors consider beams of non-integer OAM, created using the presented method, as superpositions of integer OAM states.

© 2017 Optical Society of America

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