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公开(公告)号：US11573366B2
公开(公告)日：2023-02-07
申请号：US17845358
申请日：2022-06-21
申请人： NKT PHOTONICS A/S
IPC分类号： G02B6/02 , C03B37/012 , C03C13/04 , C03C25/66
摘要： An optical fiber having an axial direction and a cross section perpendicular to the axial direction, and a method and preform for producing such an optical fiber. The optical fiber is adapted to guide light at a wavelength λ, and includes a core region, an inner cladding region surrounding said core region, and at least one of a first type of feature including a void and a surrounding first silica material. The core, the inner cladding region and the first type of feature extends along said axial direction over at least a part of the length of the optical fiber. The first silica material has a first chlorine concentration of about 300 ppm or less.
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公开(公告)号：US11947160B2
公开(公告)日：2024-04-02
申请号：US18150486
申请日：2023-01-05
申请人： NKT Photonics A/S
IPC分类号： G02B6/02 , C03B37/012 , C03C13/04 , C03C25/66
CPC分类号： G02B6/02342 , C03B37/0122 , C03C13/045 , C03C25/66 , C03B2201/03 , C03B2201/20 , C03B2201/21 , C03B2203/14 , C03B2203/16 , C03B2203/42 , G02B6/02352 , G02B6/02357
摘要： An optical fiber having an axial direction and a cross section perpendicular to the axial direction, and a method and preform for producing such an optical fiber. The optical fiber is adapted to guide light at a wavelength λ, and includes a core region, an inner cladding region surrounding said core region, and at least one of a first type of feature including a void and a surrounding first silica material. The core, the inner cladding region and the first type of feature extends along said axial direction over at least a part of the length of the optical fiber. The first silica material has a first chlorine concentration of about 300 ppm or less.
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公开(公告)号：US11726385B2
公开(公告)日：2023-08-15
申请号：US17921494
申请日：2021-04-27
申请人： NKT PHOTONICS A/S
发明人： Cameron Lesley Colwell Smith , Alexandra Lupi , Martin Erland Vestergaard Pedersen , Jens Kristian Lyngsø , Martin D. Maack
CPC分类号： G02F1/3528 , G02F1/3503 , G02F1/365 , G02F2202/32
摘要： An optical source including a supercontinuum generation apparatus including a pump light source, a twisted photonic crystal fibre, PCF, and a wideband quarter-wave retarder. The pump light source is arranged to provide circularly polarised pump light. The twisted PCF is arranged to receive the pump light and to convert the pump light into circularly polarised supercontinuum light. The wideband quarter-wave retarder is arranged to convert the circularly polarised supercontinuum light into linearly polarised supercontinuum light. The optical source may additionally include a wavelength tunable bandpass optical filter arranged to transmit the linearly polarised supercontinuum light at wavelengths within a selected range.
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4.发明公开公开(公告)号：US20230161100A1
公开(公告)日：2023-05-25
申请号：US18150486
申请日：2023-01-05
申请人： NKT Photonics A/S
IPC分类号： G02B6/02 , C03B37/012 , C03C13/04 , C03C25/66
CPC分类号： G02B6/02342 , C03B37/0122 , C03C13/045 , C03C25/66 , C03B2203/16 , C03B2203/14 , C03B2201/03 , G02B6/02352 , C03B2203/42 , G02B6/02357 , C03B2201/21 , C03B2201/20
摘要： An optical fiber having an axial direction and a cross section perpendicular to the axial direction, and a method and preform for producing such an optical fiber. The optical fiber is adapted to guide light at a wavelength λ, and includes a core region, an inner cladding region surrounding said core region, and at least one of a first type of feature including a void and a surrounding first silica material. The core, the inner cladding region and the first type of feature extends along said axial direction over at least a part of the length of the optical fiber. The first silica material has a first chlorine concentration of about 300 ppm or less.
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