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Opt Express. 2010 Mar 1;18(5):4709-16. doi: 10.1364/OE.18.004709.

A design method of a fiber-based mode multi/demultiplexer for mode-division multiplexing.

Author information

  • 1Graduate School of Information Science and Technology, Hokkaido University, Sapporo 060-0814, Japan. humiya@icp.ist.hokudai.ac.jp

Abstract

In the mode-division multiplexing (MDM) optical transmission system, a mode multi/demultiplexer is an important key device for excitation, multiplication, and separation of light signals which have distinct modes. In this report, we propose a fiber-type mode multi/demultiplexer based on selective phase matching between different cores/modes. Design method and device characteristics of 1x4 mode multi/demultiplexer are investigated through finite element analysis. In order to expand operating wavelength range, we reveal the structural parameters that satisfy phase matching conditions over wide wavelength range. Our numerical results demonstrate that the mode multi/demultiplexer with broadband, polarization-insensitive operation can be realized by applying the proposed fiber structure.

PMID:
20389484
[PubMed]
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