公开(公告)号：US20240248252A1

公开(公告)日：2024-07-25

申请号：US18576972

申请日：2022-07-01

Applicant: NKT PHOTONICS A/S

Inventor： Mattia MICHIELETTO ,  Martin Erland Vestergaard PEDERSEN ,  Martin MAACK ,  Mette Marie JOHANSEN

IPC: G02B6/02

CPC classification number: G02B6/02361 ,  G02B6/02214 ,  G02B6/02333 ,  G02B6/02347

Abstract: An optical fiber for guiding an optical signal, the optical fiber includes: a core region; a cladding region surrounding the core region, the cladding region including an inner cladding region and an outer cladding region, wherein a plurality of the plurality of inner cladding features are of a first type of feature, wherein a plurality of the plurality of inner cladding features are of a second type of feature including an air hole in direct contact with the background material having a refractive index, nb, and wherein the inner cladding features are arranged in a substantially hexagonal lattice and the six nearest neighbors surrounding a first type of feature are of the second type of feature, and wherein no first type of feature is surrounded by less than six nearest neighbors of the second type of feature.