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Updated: Mar 31, 2026
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Writing Bragg Gratings in Multicore Fibers
Published on: April 20, 2016
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Modal analysis and efficient coupling of TE₀₁ mode in small-core THz Bragg fibers
Optics Express
|October 20, 2015
Abstract:
We report a design of low-loss THz Bragg fibers with a core size on the order of wavelength that operates near the cutoff frequency of its TE01 mode. We also propose a broadband Y-type mode converter based on branched rectangular metallic waveguides to facilitate coupling between the TE01 mode of the Bragg fiber and the TEM mode in free space with 60% efficiency. Our fiber holds strong promise to facilitate beam-wave interaction in gyrotron for high-efficiency THz generation.
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