Max-Planck-Gesellschaft Zur F&#xf6;rderung Der Wissenschaften E. V.

Asml Netherlands B.v.

Michael Henoch Frosz

Patrick Sebastian Uebel

Philip Russell

Xin Yu

Philip Russel

Yuanyuan Jiang

Jan K SCHLÜSENER

Philip St J Russel

A hollow-core anti-resonant-reflecting fibre (HC-AF) includes a hollow-core region, an inner cladding region, and an outer cladding region. The hollow-core region axially extends along the HC-AF. The inner cladding region includes a plurality of anti-resonant elements (AREs) and surrounds the hollow-core region. The outer cladding region surrounds the inner cladding region. The hollow-core region and the plurality of AREs are configured to provide phase matching of higher order hollow-core modes and ARE modes in a broadband wavelength range.

Hollow-core fibre and method of manufacturing thereof

A hollow-core fiber () of non-bandgap type comprises a hollow core region () axially extending along the hollow-core fiber () and having a smallest transverse core dimension (D), wherein the core region () is adapted for guiding a transverse fundamental core mode and transverse higher order core modes, and an inner cladding region () comprising an arrangement of anti-resonant elements (AREs) (A,B) surrounding the core region () along the hollow-core fiber (), each having a smallest transverse ARE dimension (d) and being adapted for guiding transverse ARE modes, wherein the core region () and the AREs (A,B) are configured to provide phase matching of the higher order core modes and the ARE modes and the ARE dimension (d) and the core dimension (D) are selected such that a ratio of the ARE and core dimensions (d/D) is approximated to a quotient of zeros of Bessel functions of first kind (u/u), multiplied with a fitting factor in a range ofto, with m being the m-th zero of the Bessel function of first kind of order, said zeros of the Bessel functions describing the LPARE modes and LPhigher order core modes, respectively. Furthermore, an optical device () including the hollow-core fiber () and a method of manufacturing the hollow-core fiber are described.

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Erlangen, Germany

Michael Henoch Frosz