Source of supercontinuum radiation and microstructured fiber

US11619778B2 · kind B2 · utility

Assignee

• NKT PHOTONICS A/S · DK

Inventors

• Jens Kristian Lyngsøe · Hornbæk, DK
• Christian Jacobsen · Avenue Madeleine, DK

Key dates

• Filing date: Aug 19, 2021
• Grant date: Apr 4, 2023
• Expiry date: Aug 19, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F1/3528
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A microstructured optical fiber having a length and a longitudinal axis along its length, the finer including a core region capable of guiding light along the longitudinal axis and a cladding region which surrounds the core region, the cladding region comprising a cladding background material and a plurality of cladding features within the cladding background material, the cladding features being arranged around the core region, wherein the cladding region comprises an inner cladding region comprising an innermost ring of cladding features and an outer cladding region comprises outer cladding rings of outer cladding features, the innermost ring consisting of those cladding features being closest to the core region, wherein the rings of cladding features each comprise bridges of cladding background material separating adjacent features of the ring, wherein the bridges of the innermost ring have an average minimum width (w1), the minimum width of a bridge of a ring being the shortest distance between two adjacent features of the ring; and wherein at least one outer cladding ring has an average minimum width (w2) of bridges that is larger than the average minimum width (w1) of the bri…