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- A micro-structured aperture made of a hollow triangular-core fiber for novel beam shaping
A micro-structured aperture made of a hollow triangular-core fiber for novel beam shaping
in: Optics Express (2010)
We demonstrate a micro-structured aperture made of a unique hollow triangular-core fiber (HTCF) that consists of a central air hole, a high-index hollow triangular core, and silica cladding for all-fiber novel beam shaping. Detailed fabrication processes to embed a hollow triangular structure into a cylindrical optical fiber are described and unique diffraction patterns out of the HTCF for monochromatic light are analyzed both experimentally and theoretically. Fourier-optic analysis combined with guided mode calculation was pursued to interpret experimental patterns in terms of the beam propagation distance.
DOI: 10.1364/OE.18.020918