CPC G02B 6/02328 (2013.01) [G02B 6/024 (2013.01); G02B 6/02342 (2013.01); G02B 6/02357 (2013.01); G02B 6/02361 (2013.01); G02B 6/02366 (2013.01); G02B 6/02371 (2013.01); G02F 1/3544 (2013.01); G02F 1/365 (2013.01)] | 20 Claims |
1. A hollow-core anti-resonant-reflecting fibre (HC-AF) comprising:
a hollow-core region axially extending along the HC-AF, wherein the hollow-core region comprises a first transverse cross-sectional dimension (D);
an inner cladding region comprising a plurality of anti-resonant elements (AREs) and surrounding the hollow-core region, wherein at least one of the plurality of AREs comprises a second transverse cross-sectional dimension (d); and
an outer cladding region surrounding the inner cladding region,
wherein a ratio of the first and second transverse cross-sectional dimensions (d/D) is based on one or more Bessel functions, and
wherein the ratio is configured to provide phase matching of higher order hollow-core modes and ARE modes.
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