Approach to multiplexing fiber communication with cylindrical vector beams.

Cylindrical vector beams (CVBs), including radial, azimuthal, and hybrid polarization vortex states, are based on the polarization singularity and regarded as the eigenmodes of fiber. In this Letter, we propose and demonstrate CVB (de)multiplexing communication in a few-mode fiber (FMF). We simulate the eight CVB modes, including the ±1 orders and the ±2 orders supported by the FMF. We measure the mode purities of the ±1-order and the ±2-order CVBs, which can reach 67.87%, 69.26%, 73.84%, and 71.95% after transmission in the 5 km FMF. The mode cross talk between the CVBs and their adjacent orders is less than -7.54  dB. In the experiment, we demonstrate four modes of coaxial CVB multiplexing communication with the orders of -2 and spatially orthogonal polarization states. The mode cross talk is less than -23.35  dB for all channels. CVB modes carrying 10 Gbit/s on-off keying signals are transmitted in the 5 km FMF and achieve bit-error rates below the forward error correction threshold of 3.8×10-3.

[1]  Li Pei,et al.  A Tunable Polarization Beam Splitter Based on Magnetic Fluids-Filled Dual-Core Photonic Crystal Fiber , 2017, IEEE Photonics Journal.

[2]  William Shieh,et al.  Space-Division Multiplexed High-Speed Superchannel Transmission Over Few-Mode Fiber , 2012, Journal of Lightwave Technology.

[3]  Maxim Kuschnerov,et al.  High Capacity Mode-Division Multiplexed Optical Transmission in a Novel 37-cell Hollow-Core Photonic Bandgap Fiber , 2014, Journal of Lightwave Technology.

[4]  A. Willner,et al.  Terabit-Scale Orbital Angular Momentum Mode Division Multiplexing in Fibers , 2013, Science.

[5]  Siddharth Ramachandran,et al.  Generation and propagation of radially polarized beams in optical fibers. , 2009, Optics letters.

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

[7]  Xiaocong Yuan,et al.  Generating Arbitrary Order Cylindrical Vector Beams With Inherent Transform Mechanism , 2017, IEEE Photonics Journal.

[8]  L. Marrucci,et al.  Optical spin-to-orbital angular momentum conversion in inhomogeneous anisotropic media. , 2006, Physical review letters.

[9]  Giovanni Milione,et al.  Using the nonseparability of vector beams to encode information for optical communication. , 2015, Optics letters.

[10]  Zhongying Wu,et al.  Three-mode mode-division-multiplexing passive optical network over 12-km low mode-crosstalk FMF using all-fiber mode MUX/DEMUX , 2017 .

[11]  Frank Effenberger.  Space division multiplexing in access networks , 2015, Photonics West - Optoelectronic Materials and Devices.

[12]  A. Willner,et al.  100 Tbit/s free-space data link enabled by three-dimensional multiplexing of orbital angular momentum, polarization, and wavelength. , 2014, Optics letters.

[13]  Changyuan Yu,et al.  Massive individual orbital angular momentum channels for multiplexing enabled by Dammann gratings , 2015, Light: Science & Applications.

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

[15]  S Berdagué,et al.  Mode division multiplexing in optical fibers. , 1982, Applied optics.

[16]  S. Randel,et al.  Breakthroughs in Photonics 2012: Space-Division Multiplexing in Multimode and Multicore Fibers for High-Capacity Optical Communication , 2013, IEEE Photonics Journal.

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

[18]  Stuart,et al.  Dispersive multiplexing in multimode optical fiber , 2000, Science.

[19]  A. Forbes,et al.  Fiber propagation of vector modes. , 2015, Optics express.

[20]  Jian Wang,et al.  High-base vector beam encoding/decoding for visible-light communications. , 2015, Optics letters.

[21]  Guifang Li,et al.  Space-division multiplexing: the next frontier in optical communication , 2014 .

[22]  A. Willner,et al.  4 × 20  Gbit/s mode division multiplexing over free space using vector modes and a q-plate mode (de)multiplexer. , 2014, Optics letters.

[23]  Q. Zhan.  Cylindrical vector beams: from mathematical concepts to applications , 2009 .

[24]  Jian Wang,et al.  A Compact Trench-Assisted Multi-Orbital-Angular-Momentum Multi-Ring Fiber for Ultrahigh-Density Space-Division Multiplexing (19 Rings × 22 Modes) , 2014, Scientific Reports.