All-fiber orbital angular momentum mode multiplexer based on a mode-selective photonic lantern and a mode polarization controller.

We demonstrate for the first time, to the best of our knowledge, an all-fiber orbital angular momentum (OAM) multiplexer that multiplexes both OAM modes of -l and +l up to the second order by using a mode-selective photonic lantern and a mode polarization controller. The experimentally obtained mode profiles are close to the theoretical results, and the mode purities are higher than 89% for all the OAM modes at 1550 nm. The losses for all mode generations are less than 3.8 dB in the C-band.

[1]  Tunable mode rotator for space-division multiplexing based on a few mode-polarization maintaining fiber. , 2016, Applied optics.

[2]  Wei Li,et al.  Continuously tunable orbital angular momentum generation controlled by input linear polarization. , 2018, Optics letters.

[3]  Siddharth Ramachandran,et al.  Control of orbital angular momentum of light with optical fibers. , 2012, Optics letters.

[4]  Jian Wang,et al.  Controllable all-fiber orbital angular momentum mode converter. , 2015, Optics letters.

[5]  L. Nelson,et al.  Space-division multiplexing in optical fibres , 2013, Nature Photonics.

[6]  Lin Chen,et al.  Full-duplex asynchronous quasi-gapless carrier-aggregation using filter-bank multi-carrier in MMW radio-over-fiber heterogeneous mobile access networks , 2016, 2016 Optical Fiber Communications Conference and Exhibition (OFC).

[7]  P. Winzer,et al.  Capacity Limits of Optical Fiber Networks , 2010, Journal of Lightwave Technology.

[8]  A. Willner,et al.  Terabit free-space data transmission employing orbital angular momentum multiplexing , 2012, Nature Photonics.

[9]  Linearly polarized orbital angular momentum mode purity measurement in optical fibers. , 2017, Applied optics.

[10]  Isaac Nape,et al.  Creation and Detection of Vector Vortex Modes for Classical and Quantum Communication , 2017, Journal of Lightwave Technology.

[11]  Siyuan Yu,et al.  Integrated Compact Optical Vortex Beam Emitters , 2012, Science.

[12]  Miles J Padgett,et al.  Orbital angular momentum 25 years on [Invited]. , 2017, Optics express.

[13]  Nicolas K. Fontaine,et al.  Photonic lantern as mode multiplexer for multimode optical communications , 2017 .

[14]  D. J. Richardson,et al.  Annular core photonic lantern OAM mode multiplexer , 2017, 2017 Optical Fiber Communications Conference and Exhibition (OFC).

[15]  Siddharth Ramachandran,et al.  Optical vortices in fiber , 2013 .