公开(公告)号：US20230018465A1

公开(公告)日：2023-01-19

申请号：US17942709

申请日：2022-09-12

Applicant: NKT Photonics A/S

Inventor： Jens Kristian LYNGSØE ,  Christian JAKOBSEN ,  Mattia MICHIELETTO

IPC: G02B6/02

Abstract: A hollow core photonic crystal fiber (PCF) including an outer cladding region and seven hollow tubes surrounded by the outer cladding region. Each of the hollow tubes is fused to the outer cladding to form a ring defining an inner cladding region and a hollow core region surrounded by the inner cladding region. The hollow tubes are not touching each other, but are arranged with distance to adjacent hollow tubes. The hollow tubes each have an average outer diameter d2 and an average inner diameter d1, wherein d1/d2 is equal to or larger than about 0.8, such as equal to or larger than about 0.85, such as equal to or larger than about 0.9. Also, a laser system.

公开(公告)号：US20220011501A1

公开(公告)日：2022-01-13

申请号：US17213653

申请日：2021-03-26

Applicant: NKT Photonics A/S

Inventor： Jens Kristian LYNGSØE ,  Christian JAKOBSEN ,  Mattia MICHIELETTO

IPC: G02B6/02

Abstract: A hollow core photonic crystal fiber (PCF) including an outer cladding region and seven hollow tubes surrounded by the outer cladding region. Each of the hollow tubes is fused to the outer cladding to form a ring defining an inner cladding region and a hollow core region surrounded by the inner cladding region. The hollow tubes are not touching each other, but are arranged with distance to adjacent hollow tubes. The hollow tubes each have an average outer diameter d2 and an average inner diameter d1, wherein d1/d2 is equal to or larger than about 0.8, such as equal to or larger than about 0.85, such as equal to or larger than about 0.9. Also, a laser system.

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.

公开(公告)号：US20200310039A1

公开(公告)日：2020-10-01

申请号：US16775555

申请日：2020-01-29

Applicant: NKT Photonics A/S

Inventor： Thomas Tanggaard ALKESKJOLD ,  Jens Kristian LYNGSØE ,  Christian JAKOBSEN ,  Martin Dybendal MAACK ,  Mattia MICHIELETTO ,  Sidsel Rübner PAPIOR

IPC: G02B6/38 ,  G02B6/02

Abstract: A photonic crystal fiber (PCF) assembly including a PCF and at least one ferrule structure. The PCF includes a core region and a cladding region and a first fiber end section with a first fiber end. The ferrule structure is mounted to the first fiber end section. The ferrule structure includes an inner ferrule arrangement and an outer ferrule arrangement surrounding the first fiber end section. The inner ferrule arrangement includes an inner ferrule front section proximally to the first fiber end and an inner ferrule rear section distally to the first fiber end, and each of the sections has an inner diameter and in at least a length thereof fully surrounds the PCF. The inner ferrule rear section is anchored in an anchor length section to the first fiber end section and the inner ferrule front section supports the first fiber end section proximally to the first fiber end.

公开(公告)号：US20220269012A1

公开(公告)日：2022-08-25

申请号：US17744401

申请日：2022-05-13

Applicant: NKT Photonics A/S

Inventor： Thomas Tanggaard ALKESKJOLD ,  Jens Kristian LYNGSØE ,  Christian JAKOBSEN ,  Martin Dybendal MAACK ,  Mattia MICHIELETTO ,  Sidsel Rübner PAPIOR

IPC: G02B6/38 ,  G02B6/02

Abstract: A photonic crystal fiber (PCF) assembly including a PCF and at least one ferrule structure. The PCF includes a core region and a cladding region and a first fiber end section with a first fiber end. The ferrule structure is mounted to the first fiber end section. The ferrule structure includes an inner ferrule arrangement and an outer ferrule arrangement surrounding the first fiber end section. The inner ferrule arrangement includes an inner ferrule front section proximally to the first fiber end and an inner ferrule rear section distally to the first fiber end, and each of the sections has an inner diameter and in at least a length thereof fully surrounds the PCF. The inner ferrule rear section is anchored in an anchor length section to the first fiber end section and the inner ferrule front section supports the first fiber end section proximally to the first fiber end.

公开(公告)号：US20190135679A1

公开(公告)日：2019-05-09

申请号：US16096878

申请日：2017-04-27

Applicant: NKT Photonics A/S

Inventor： Christian JAKOBSEN ,  Harald Roager SIMONSEN ,  Jens Kristian LYNGSØE ,  Mattia MICHIELETTO

IPC: C03B37/012 ,  C03B37/027 ,  C03B37/025 ,  G02B6/02

Abstract: A method of producing a microstructured optical fiber is disclosed. The method includes providing a preform and drawing the preform. The preform has a center axis, a length and a first end and a second end and has at least one longitudinal hole extending lengthwise. The method includes inserting a first end of a pressure tube into the hole of the preform at the first end of the preform and subjecting the hole of the preform to a controlled pressure via the pressure tube during the drawing.

公开(公告)号：US20230273366A1

公开(公告)日：2023-08-31

申请号：US18301648

申请日：2023-04-17

Applicant: NKT Photonics A/S

Inventor： Jens Kristian LYNGSØE ,  Christian JAKOBSEN ,  Mattia MICHIELETTO

IPC: G02B6/02

CPC classification number: G02B6/02328 ,  G02B6/02338 ,  G02B6/02366 ,  G02B6/02371 ,  G02B6/4296

Abstract: A hollow core photonic crystal fiber (PCF) including an outer cladding region and seven hollow tubes surrounded by the outer cladding region. Each of the hollow tubes is fused to the outer cladding to form a ring defining an inner cladding region and a hollow core region surrounded by the inner cladding region. The hollow tubes are not touching each other but are arranged with distance to adjacent hollow tubes. The hollow tubes each have an average outer diameter d2 and an average inner diameter d1, wherein d1/d2 is equal to or larger than about 0.8, such as equal to or larger than about 0.85, such as equal to or larger than about 0.9. Also, a laser system.

公开(公告)号：US20210341682A1

公开(公告)日：2021-11-04

申请号：US17316645

申请日：2021-05-10

Applicant: NKT Photonics A/S

Inventor： Thomas Tanggaard ALKESKJOLD ,  Jens Kristian LYNGSOE ,  Christian JAKOBSEN ,  Martin Dybendal MAACK ,  Mattia MICHIELETTO ,  Sidsel Rubner PAPIOR

IPC: G02B6/38 ,  G02B6/02

Abstract: A photonic crystal fiber (PCF) assembly including a PCF and at least one ferrule structure. The PCF includes a core region and a cladding region and a first fiber end section with a first fiber end. The ferrule structure is mounted to the first fiber end section. The ferrule structure includes an inner ferrule arrangement and an outer ferrule arrangement surrounding the first fiber end section. The inner ferrule arrangement includes an inner ferrule front section proximally to the first fiber end and an inner ferrule rear section distally to the first fiber end, and each of the sections has an inner diameter and in at least a length thereof fully surrounds the PCF. The inner ferrule rear section is anchored in an anchor length section to the first fiber end section and the inner ferrule front section supports the first fiber end section proximally to the first fiber end.

公开(公告)号：US20190011634A1

公开(公告)日：2019-01-10

申请号：US16064751

申请日：2016-12-22

Applicant: NKT Photonics A/S

Inventor： Jens Kristian LYNGSØE ,  Christian JAKOBSEN ,  Mattia MICHIELETTO

IPC: G02B6/02 ,  G02B6/42

Abstract: A hollow core photonic crystal fiber (PCF) comprising an outer cladding region and 7 hollow tubes surrounded by the outer cladding region. Each of the hollow tubes is fused to the outer cladding to form a ring defining an inner cladding region and a hollow core region surrounded by the inner cladding region. The hollow tubes are not touching each other, but are arranged with distance to adjacent hollow tubes. The hollow tubes each have an average outer diameter d2 and an average inner diameter d1, wherein d1/d2 is equal to or larger than about 0.8, such as equal to or larger than about 0.85, such as equal to or larger than about 0.9.Also a laser system is disclosed.