Mode-Division Multiplexing over 96 Km of Few-Mode Fiber using Coherent 6x6 MIMO Processing

Abstract

We report simultaneous transmission of six spatial and polarization modes, each carrying 40 Gb/s quadrature-phase-shift-keyed channels over 96 km of a low-differential group delay few-mode fiber. The channels are successfully recovered by offline DSP based on coherent detection and multiple-input multiple-output processing. A penalty of < 1.2 dB is achieved by using 6x 6 feed-forward equalizers with 120 taps each. The 6x6 impulse-response matrix fully characterizing the few-mode fiber is presented, revealing the coupling characteristics between the modes. The results are obtained using mode multiplexers based on phase plates with a mode selectivity of > 28 dB.

Department(s)

Electrical and Computer Engineering

Keywords and Phrases

Digital signal processing (DSP); MIMO; Optical fibers

International Standard Serial Number (ISSN)

0733-8724; 1558-2213

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2012 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Feb 2012

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