Reconfigurable 22 Orbital-Angular-Momentum-Based Optical Switching of 50-Gbaud QPSK Channels

Ren, Yongxiong; Willner, Alan E.; Xie, Guodong; Huang, Hao; Ahmed, Nisar; Yan, Yan

doi:10.1049/cp.2013.1508

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Vortex-Beam Information Exchange

2023

Optical Wireless Communication Theory and Technology

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Vortex-Beam Information Exchange

2023

Optical Wireless Communication Theory and Technology

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All-Fiber Multiplexing and Transmission of High-Order Circularly Polarized Orbital Angular Momentum Modes With Mode Selective Couplers

Yang¹,

Liu²,

Wen³

et al. 2019

IEEE Photonics J.

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We have demonstrated an all-fiber high-order circularly polarized (CP) orbital angular momentum (OAM) modes (de)multiplexing system based on second-order mode selective couplers (SMSCs). Such SMSCs combining standard single mode fiber and ring core fiber (RCF) are fabricated by a fusing and pulling technique, in which the RCF supports second-order vector modes (HE 31 and EH 11). During a pulling process, the HE 31 and EH 11 modes could be excited along the coupling region through evanescent wave interaction. By adjusting the polarization states, the excited secondorder modes are transformed into two sets of second-order CP OAM (CP-OAM ±2) modes and then transmit along the RCF. The second-order CP-OAM ±2 modes, carrying a 2.95-Gb/s orthogonal frequency division multiplexing signals filled with the 16-level quadrature amplitude modulation signals, are successfully (de)multiplexed and propagated over a 3.7-km RCF. The experimental investigations show that the developed system to multiplex and transmit CP-OAM ±2 can achieve forward error correction threshold that the received optical power is larger than −13 dBm. The obtained results show that the OAM modes can be generated, (de)multiplexed, and effectively transmitted in the RCF with favorable performance by the designed SMSCs.

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Reconfigurable 22 Orbital-Angular-Momentum-Based Optical Switching of 50-Gbaud QPSK Channels

Cited by 2 publications

References 2 publications

Vortex-Beam Information Exchange

Vortex-Beam Information Exchange

All-Fiber Multiplexing and Transmission of High-Order Circularly Polarized Orbital Angular Momentum Modes With Mode Selective Couplers

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