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We propose a scheme to realize controllable, scalable, and versatile all-fiber orbital angular momentum (OAM) generator. By deforming a two-mode fiber (TMF) with mechanical devices, selective generation of LP11a, LP11b, OAM−1 and OAM+1 modes are demonstrated.
We present a supermode fiber to support orbital angular momentum (OAM) multiplexing. The designed supermode fiber can guide multiple OAM modes with favorable performance of low mode coupling, low nonlinearity, and low modal dependent loss.
By exploiting N-dimensional multiplexing, i.e. 54.139-Gbit/s OFDM-8QAM signals over 368 WDM pol-muxed 26 orbital angular momentum (OAM) modes, we experimentally demonstrate a free-space data link with an aggregate transmission capacity of 1.036 Pbit/s and a high spectral efficiency of 112.6 bit/s/Hz.
We present a compact multi-ring fiber transmitting multiple orbital angular momentum (OAM) modes. The designed multi-ring multi-OAM-mode fiber (MRMOF) consists of 7 rings each supporting 22 OAM modes, i.e. 154 channels in total.
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