公开(公告)号：US20210126422A1

公开(公告)日：2021-04-29

申请号：US17079090

申请日：2020-10-23

Applicant: The Board of Trustees of the University of Illinois ,  Clemson University

Inventor： Peter D. Dragic ,  John Ballato ,  Thomas W. Hawkins

IPC: H01S3/102 ,  H01S3/16 ,  H01S3/067

Abstract: A fiber includes a core and cladding, both of which may have temperature dependent indices of refraction. The materials and size of the core and cladding may be selected such that as the temperature of the core and/or cladding is heated above room temperature, the fiber transitions from supporting multimode optical waveguiding to supporting single mode waveguiding.

公开(公告)号：US11880062B2

公开(公告)日：2024-01-23

申请号：US16689349

申请日：2019-11-20

Applicant: The Board of Trustees of the University of Illinois ,  Clemson University

Inventor： Peter Dragic ,  John Ballato ,  Andrey Mironov ,  Courtney Kucera ,  Matthew Tuggle

IPC: G02B6/02 ,  G02F1/295 ,  G02B6/12 ,  G02B6/26 ,  G02B6/42 ,  G02B6/10 ,  C03C25/62

CPC classification number: G02B6/02114 ,  C03C25/62 ,  G02B2006/1208

Abstract: A microheater comprises an optical fiber including a rare earth-doped glass core surrounded by a glass cladding. The rare earth-doped glass core comprises a rare earth dopant at a concentration sufficient for luminescence quenching such that, when the rare earth dopant is pumped with light at an absorption band wavelength, at least about 90% of absorbed pump light is converted into heat.

公开(公告)号：US11476634B2

公开(公告)日：2022-10-18

申请号：US16404955

申请日：2019-05-07

Applicant: The Board of Trustees of the University of Illinois ,  Clemson University

Inventor： Peter Dragic ,  John Ballato ,  Maxime Cavillon

IPC: H01S3/17 ,  H01S3/16 ,  H01S3/067

Abstract: A rare earth-doped optical fiber comprises a fluorosilicate core surrounded by a silica cladding, where the fluorosilicate core comprises an alkaline-earth fluoro-alumino-silicate glass, such as a strontium fluoro-alumino-silicate glass. The rare earth-doped optical fiber may be useful as a high-power fiber laser and/or fiber amplifier. A method of making a rare earth-doped optical fiber comprises: inserting a powder mixture comprising YbF3, SrF2, and Al2O3 into a silica tube; after inserting the powder mixture, heating the silica tube to a temperature of at least about 2000° C., some or all of the powder mixture undergoing melting; drawing the silica tube to obtain a reduced-diameter fiber; and cooling the reduced-diameter fiber. Thus, a rare earth-doped optical fiber comprising a fluorosilicate core surrounded by a silica cladding is formed.

公开(公告)号：US20200174184A1

公开(公告)日：2020-06-04

申请号：US16689349

申请日：2019-11-20

Applicant: The Board of Trustees of the University of Illinois ,  Clemson University

Inventor： Peter Dragic ,  John Ballato ,  Andrey Mironov ,  Courtney Kucera ,  Matthew Tuggle

IPC: G02B6/02 ,  C03C25/62

Abstract: A microheater comprises an optical fiber including a rare earth-doped glass core surrounded by a glass cladding. The rare earth-doped glass core comprises a rare earth dopant at a concentration sufficient for luminescence quenching such that, when the rare earth dopant is pumped with light at an absorption band wavelength, at least about 90% of absorbed pump light is converted into heat.

公开(公告)号：US09139467B2

公开(公告)日：2015-09-22

申请号：US14245448

申请日：2014-04-04

Applicant: Clemson University ,  University of Illinois at Urbana-Champaign

Inventor： John Ballato ,  Peter D. Dragic

IPC: G02B6/02 ,  C03B37/027 ,  G02B6/036

CPC classification number: C03B37/027 ,  C03B2201/10 ,  C03B2201/28 ,  C03B2201/32 ,  C03B2201/54 ,  C03B2205/72 ,  G02B6/03694

Abstract: Disclosed is an optical fiber formed from a preform that includes a clad component and a core component. The core component includes one or more precursor core materials. The precursor core materials and the clad materials are selected such that that the photoelastic constants of at least one precursor core material and the clad material are of opposite sign resulting in a final glass optical fiber of tailored Brillouin performance. The clad material may include an oxide glass having a positive photoelastic constant and the core component may include a precursor core material that has a negative photoelastic constant. During formation, the precursor core material can melt and interact with clad material that precipitates into the core to form a glass of at least one tailored Brillouin property, such as very low Brillouin gain.

Abstract translation: 公开了一种由包括包层部件和芯部件的预成型件形成的光纤。 核心部件包括一种或多种前体核心材料。 前体芯材料和包层材料被选择为使得至少一种前体芯材料和包覆材料的光弹性常数具有相反的符号，导致定制的布里渊性能的最终玻璃光纤。 包层材料可以包括具有正光弹性常数的氧化物玻璃，并且核心部件可以包括具有负光弹性常数的前体核心材料。 在形成期间，前体核心材料可以熔融并与沉淀到芯中的包覆材料相互作用，以形成至少一种定制的布里渊特性的玻璃，例如非常低的布里渊增益。

公开(公告)号：US20140301706A1

公开(公告)日：2014-10-09

申请号：US14245448

申请日：2014-04-04

Applicant: Clemson University

Inventor： John Ballato ,  Peter D. Dragic

IPC: G02B6/02 ,  C03B37/027

CPC classification number: C03B37/027 ,  C03B2201/10 ,  C03B2201/28 ,  C03B2201/32 ,  C03B2201/54 ,  C03B2205/72 ,  G02B6/03694

Abstract: Disclosed is an optical fiber formed from a preform that includes a clad component and a core component. The core component includes one or more precursor core materials. The precursor core materials and the clad materials are selected such that that the photoelastic constants of at least one precursor core material and the clad material are of opposite sign resulting in a final glass optical fiber of tailored Brillouin performance. The clad material may include an oxide glass having a positive photoelastic constant and the core component may include a precursor core material that has a negative photoelastic constant. During formation, the precursor core material can melt and interact with clad material that precipitates into the core to form a glass of at least one tailored Brillouin property, such as very low Brillouin gain.

Abstract translation: 公开了一种由包括包层部件和芯部件的预成型件形成的光纤。 核心部件包括一种或多种前体核心材料。 前体芯材料和包层材料被选择为使得至少一种前体芯材料和包覆材料的光弹性常数具有相反的符号，导致定制的布里渊性能的最终玻璃光纤。 包层材料可以包括具有正光弹性常数的氧化物玻璃，并且核心部件可以包括具有负光弹性常数的前体核心材料。 在形成期间，前体核心材料可以熔融并与沉淀到芯中的包覆材料相互作用，以形成至少一种定制的布里渊特性的玻璃，例如非常低的布里渊增益。

公开(公告)号：US12072521B2

公开(公告)日：2024-08-27

申请号：US17079090

申请日：2020-10-23

Applicant: The Board of Trustees of the University of Illinois ,  Clemson University

Inventor： Peter D. Dragic ,  John Ballato ,  Thomas W. Hawkins

IPC: G02B6/02 ,  F21V8/00 ,  H01S3/067 ,  H01S3/16

CPC classification number: G02B6/0003 ,  G02B6/02004 ,  H01S3/06716 ,  H01S3/1601

Abstract: A fiber includes a core and cladding, both of which may have temperature dependent indices of refraction. The materials and size of the core and cladding may be selected such that as the temperature of the core and/or cladding is heated above room temperature, the fiber transitions from supporting multimode optical waveguiding to supporting single mode waveguiding.

公开(公告)号：US20190341737A1

公开(公告)日：2019-11-07

申请号：US16404955

申请日：2019-05-07

Applicant: The Board of Trustees of the University of Illinois ,  Clemson University

Inventor： Peter Dragic ,  John Ballato ,  Maxime Cavillon

IPC: H01S3/16 ,  H01S3/067 ,  H01S3/17

Abstract: A rare earth-doped optical fiber comprises a fluorosilicate core surrounded by a silica cladding, where the fluorosilicate core comprises an alkaline-earth fluoro-alumino-silicate glass, such as a strontium fluoro-alumino-silicate glass. The rare earth-doped optical fiber may be useful as a high-power fiber laser and/or fiber amplifier. A method of making a rare earth-doped optical fiber comprises: inserting a powder mixture comprising YbF3, SrF2, and Al2O3 into a silica tube; after inserting the powder mixture, heating the silica tube to a temperature of at least about 2000° C., some or all of the powder mixture undergoing melting; drawing the silica tube to obtain a reduced-diameter fiber; and cooling the reduced-diameter fiber. Thus, a rare earth-doped optical fiber comprising a fluorosilicate core surrounded by a silica cladding is formed.