US 11,733,451 B2
Hollow-core fibre and method of manufacturing thereof
Philip Russell, Roettenbach (DE); Patrick Uebel, Marloffstein (DE); and Michael Henoch Frosz, Erlangen (DE)
Assigned to Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V., Munich (DE)
Filed by Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V., Munich (DE)
Filed on Jan. 25, 2022, as Appl. No. 17/583,290.
Application 17/583,290 is a continuation of application No. 16/502,980, filed on Jul. 3, 2019, granted, now 11,269,135.
Application 16/502,980 is a continuation of application No. 15/754,821, granted, now 10,393,956, issued on Aug. 27, 2019, previously published as PCT/EP2016/001424, filed on Aug. 24, 2016.
Claims priority of application No. 15002534 (EP), filed on Aug. 26, 2015.
Prior Publication US 2022/0146907 A1, May 12, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 6/02 (2006.01); G02B 6/024 (2006.01); G02F 1/35 (2006.01); G02F 1/365 (2006.01)
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
OG exemplary drawing
 
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.