A flat EML with near zero flat dispersion in THz porous fiber

What is it about?

The reported waveguide has presented a hybrid core porous fiber for THz frequency regime (0.1-10 THz). The novel design contains three different types of air hole arrangements where a hybrid core region with a combination of triangular and circular distribution of air holes has been reported for the first time. This waveguide has exhibited a flat Effective Material Loss (EML) response in THz regime that has never been reported before in this particular research topic. In addition, the waveguide has showed a large band of near zero flat dispersion properties for communication applications using THz frequency.

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Why is it important?

The novel discoveries from this research have helped to further understand the guiding mechanism of a porous core waveguide. Results have showed that a flat EML response for THz frequency can be achieved by tuning the porous fiber design. It has also presented that the flat dispersion characteristics can be extended for larger frequency bands by changing the air hole arrangement. Mostly, the research in the reported work has showed us what changes happen when a hybrid porous core is introduced in the design. This research work has opened the doors for introducing new porous core design by using hybrid core in the fiber. This method of using hybrid porous core may unlock different properties in THz waveguides. The implementation of flat EML waveguides will extend the utilization of THz regime to a new level. THz regime can be practically used for long distance communications with large band of near zero dispersion flattened properties.

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