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Updated: May 29, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
Published on: March 20, 2017
Dual-LP11 mode 4×4 MIMO-OFDM transmission over a two-mode fiber
Abdullah Al Amin1, An Li, Simin Chen
1National ICT Australia and Centre for Energy- Efficient Telecommunications (CEET), Department of Electrical and Electronic Engineering, The University of Melbourne, Parkville, VIC 3010, Australia. aalamin@unimelb.edu.au
Abstract:
We report successful transmission of dual-LP(11) mode (LP(11a) and LP(11b)), dual polarization coherent optical orthogonal frequency-division multiplexing (CO-OFDM) signals over two-mode fibers (TMF) using all-fiber mode converters. Mode converters based on mechanically induced long-period grating with better than 20 dB extinction ratios are realized and used for interfacing single-mode fiber transmitter and receivers to the TMF. We demonstrate that by using 4×4 MIMO-OFDM processing, the random coupling of the two LP(11) spatial modes can be successfully tracked and equalized with a one-tap frequency-domain equalizer. We achieve successful transmission of 35.3 Gb/s over 26-km two-mode fiber with less than 3 dB penalty.
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