JP7088958B2 - マルチクラッド光ファイバ - Google Patents
マルチクラッド光ファイバ Download PDFInfo
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- JP7088958B2 JP7088958B2 JP2019556947A JP2019556947A JP7088958B2 JP 7088958 B2 JP7088958 B2 JP 7088958B2 JP 2019556947 A JP2019556947 A JP 2019556947A JP 2019556947 A JP2019556947 A JP 2019556947A JP 7088958 B2 JP7088958 B2 JP 7088958B2
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/028—Optical fibres with cladding with or without a coating with core or cladding having graded refractive index
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
- G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
- G02B6/03661—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 4 layers only
- G02B6/03683—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 4 layers only arranged - - + +
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
- G02B6/03605—Highest refractive index not on central axis
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/262—Optical details of coupling light into, or out of, or between fibre ends, e.g. special fibre end shapes or associated optical elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/0672—Non-uniform radial doping
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06729—Peculiar transverse fibre profile
- H01S3/06733—Fibre having more than one cladding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06729—Peculiar transverse fibre profile
- H01S3/06741—Photonic crystal fibre, i.e. the fibre having a photonic bandgap
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08018—Mode suppression
- H01S3/0804—Transverse or lateral modes
- H01S3/08045—Single-mode emission
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1613—Solid materials characterised by an active (lasing) ion rare earth praseodymium
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/028—Optical fibres with cladding with or without a coating with core or cladding having graded refractive index
- G02B6/0281—Graded index region forming part of the central core segment, e.g. alpha profile, triangular, trapezoidal core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1616—Solid materials characterised by an active (lasing) ion rare earth thulium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/17—Solid materials amorphous, e.g. glass
- H01S3/176—Solid materials amorphous, e.g. glass silica or silicate glass
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/30—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects
- H01S3/302—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects in an optical fibre
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Glass Compositions (AREA)
- Lasers (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Description
**H2過剰のH2/O2炎、プリフォーム温度~1000度(℃)、6.2日間
***V(バブラーを介した単数又は複数のガス流れ):
V-GeCL4/V-SiCl4:0.359
V-SF6/V-SiCl4:0.072
V-O2sur/V-SiCl4:6.12
**H2過剰のH2/O2炎、プリフォーム温度~1000度(℃)、1-20日間
***V(バブラーを介した単数又は複数のガス流れ):
V-GeCL4/V-SiCl4:0.2-0.5
V-SF6/V-SiCl4:0.01-0.3
V-O2sur/V-SiCl4:0.5-15
**H2過剰のH2/O2炎、プリフォーム温度~1000度(℃)、1-20日間
**H2過剰のH2/O2炎、プリフォーム温度~1000度(℃)、6.2日間
***V(バブラーを介した単数又は複数のガス流れ):
V-GeCL4/V-SiCl4:0.359
V-SF6/V-SiCl4:0.072
V-O2sur/V-SiCl4:6.12
**H2過剰のH2/O2炎、プリフォーム温度~1000度(℃)、6.2日間
***V(バブラーを介した単数又は複数のガス流れ):
V-GeCL4/V-SiCl4:0.359
V-SF6/V-SiCl4:0.072
V-O2sur/V-SiCl4:6.12
****掲載のエアホール直径/壁厚さを有するPCF領域
**H2過剰のH2/O2炎、プリフォーム温度~1000度(℃)、6.2日間
***V(バブラーを介した単数又は複数のガス流れ):
V-GeCL4/V-SiCl4:0.359
V-SF6/V-SiCl4:0.072
V-O2sur/V-SiCl4:6.12
****掲載のエアホール直径/壁厚さを有するPCF領域
**H2過剰のH2/O2炎、プリフォーム温度~1000度(℃)、6.2日間
***V(バブラーを介した単数又は複数のガス流れ):
V-GeCL4/V-SiCl4:0.359
V-SF6/V-SiCl4:0.072
V-O2sur/V-SiCl4:6.12
****掲載のエアホール直径/壁厚さを有するPCF領域
**H2過剰のH2/O2炎、プリフォーム温度~1000度(℃)、6.2日間
***V(バブラーを介した単数又は複数のガス流れ):
V-GeCL4/V-SiCl4:0.359
V-SF6/V-SiCl4:0.072
V-O2sur/V-SiCl4:6.12
**H2過剰のH2/O2炎、プリフォーム温度~1000度(℃)、6.2日間
***V(バブラーを介した単数又は複数のガス流れ):
V-GeCL4/V-SiCl4:0.359
V-SF6/V-SiCl4:0.072
V-O2sur/V-SiCl4:6.12
****掲載のエアホール直径/壁厚さを有するPCF領域
**H2過剰のH2/O2炎、プリフォーム温度~1000度(℃)、6.2日間
***V(バブラーを介した単数又は複数のガス流れ):
V-GeCL4/V-SiCl4:0.359
V-SF6/V-SiCl4:0.072
V-O2sur/V-SiCl4:6.12
****掲載のエアホール直径/壁厚さを有するPCF領域
2 GRINコア
3 内側クラッディング
4 第2クラッディング
5 外側クラッディング
6 外側被覆
Claims (18)
- 溶融シリカベースのマルチクラッド光ファイバであって、
第1のクラッディング層によって取り囲まれているコアであって、前記第1のクラッディング層及びコアがシリカガラスからなり、それにより前記光ファイバが0.2以上のNAを有し、前記光ファイバがM2>>1.5の低いビーム品質の可視光又はUV光を、M2<1.5を有する高いビーム品質の光へ変換するようにする第1のクラッディング層によって取り囲まれているコアと、
前記光ファイバが前記可視光又は前記UV光における約10dB/kmから約40dB/kmの伝搬損失を提供するようにする水素ドーパントと、を備え、
前記コアはGRIN(グレーデッドインデックス)構造を有している、
溶融シリカベースのマルチクラッド光ファイバ。 - 請求項1に記載の光ファイバにおいて、前記GRIN構造は屈折率を改変するための前記シリカガラスへの改質剤を有し、当該光ファイバは前記第1のクラッディング層の外側に、前記コアをUV照射から遮蔽するための改質剤を含むシリカガラスからなる外側クラッディングを更に有している、光ファイバ。
- 請求項1又は請求項2に記載の光ファイバにおいて、前記第1のクラッディング層は第2のクラッディング層によって取り囲まれ、前記第2のクラッディング層は外側クラッディング層によって取り囲まれ、前記クラッディング層のそれぞれは溶融シリカガラスからなる、光ファイバ。
- 請求項1又は請求項2に記載の光ファイバにおいて、前記第1のクラッディング層は第2のクラッディング層によって取り囲まれ、前記第2のクラッディング層は外側クラッディング層によって取り囲まれ、前記クラッディング層のそれぞれは化学的改質剤を含む溶融シリカガラスを有している、光ファイバ。
- 請求項1に記載の光ファイバにおいて、前記低いビーム品質の光は希土類イオンの直接レージングを通じて前記高いビーム品質の光へ変換される、光ファイバ。
- 請求項1に記載の光ファイバにおいて、前記低いビーム品質の光は非線形光学によって誘導されるエネルギー交換プロセスを通じて前記高いビーム品質の光へ変換される、光ファイバ。
- 請求項1に記載の光ファイバにおいて、前記伝搬損失は可視光とUV光の両方で低い、光ファイバ。
- 請求項1に記載の光ファイバにおいて、前記GRIN構造は、リン、アルミニウム、及びアルミニウムとリン、から成る群より選択された構成要素を備えている、光ファイバ。
- 請求項1に記載の光ファイバにおいて、前記GRIN構造は、純粋溶融シリカの屈折率を増加させ、また、青色光によって照射されたときに感光変化しない材料から成る群より選択された構成要素を備えている、光ファイバ。
- 請求項9に記載の光ファイバであって、前記光ファイバのLP01モードである基本モードに対する最も高い非線形利得を呈するように構成されている光ファイバ。
- 請求項1に記載の光ファイバであって、前記第1のクラッディング層を取り囲む第2のクラッディング層を有していて、前記第2のクラッディング層は、前記第1のクラッディング層の屈折率より低い有効屈折率を有している、光ファイバ。
- 請求項11に記載の光ファイバにおいて、前記第2のクラッディング層はシリカガラス及び前記シリカガラスへの改質剤を備え、それにより前記第2のクラッディング層の屈折率を前記第1のクラッディング層についての屈折率未満へ下げている、光ファイバ。
- 請求項11に記載の光ファイバにおいて、前記第2のクラッディング層は非固体構造を備え、それにより前記第2のクラッディング層の屈折率を前記第1のクラッディング層についての屈折率未満へ下げている、光ファイバ。
- 請求項11に記載の光ファイバにおいて、前記第2のクラッディング層は低屈折率ポリマーを備え、それにより前記第2のクラッディング層の屈折率を前記第1のクラッディング層についての屈折率未満へ下げている、光ファイバ。
- 請求項1に記載の光ファイバであって、第2のクラッディング層及び第3のクラッディング層を備えていて、前記第2のクラッディング層及び第3のクラッディング層がシリカガラスからなり、前記第3のクラッディング層の有効屈折率は前記第2のクラッディング層の有効屈折率より高い、光ファイバ。
- 請求項11に記載の光ファイバであって、シリカガラスからなる第3のクラッディング層を備えていて、前記第3のクラッディング層の有効屈折率は前記第2のクラッディング層の有効屈折率より高い、光ファイバ。
- 請求項15に記載の光ファイバにおいて、前記第1のクラッディング層と前記第2のクラッディング層と前記第3のクラッディング層のうちの1つ又はそれ以上は、前記第1のクラッディング層及び前記コアをUV照射から保護するために化学的改質剤を備えている、光ファイバ。
- 請求項11に記載の光ファイバであって、シリカガラスからなる第3のクラッディング層を備えていて、前記第3のクラッディング層の有効屈折率は前記第2のクラッディング層の有効屈折率より低い、光ファイバ。
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JP2022093898A JP2022120095A (ja) | 2017-04-21 | 2022-06-09 | 低いビーム品質をより高いビーム品質に変換する方法 |
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US201762488440P | 2017-04-21 | 2017-04-21 | |
US62/488,440 | 2017-04-21 | ||
PCT/US2018/028698 WO2018195510A1 (en) | 2017-04-21 | 2018-04-20 | Multi-clad optical fiber |
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JP2020517997A JP2020517997A (ja) | 2020-06-18 |
JP2020517997A5 JP2020517997A5 (ja) | 2020-11-12 |
JP7088958B2 true JP7088958B2 (ja) | 2022-06-21 |
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Country Status (8)
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US (2) | US10634842B2 (ja) |
EP (2) | EP4220252A3 (ja) |
JP (2) | JP7088958B2 (ja) |
KR (1) | KR102423330B1 (ja) |
CN (1) | CN110651209B (ja) |
CA (1) | CA3061027C (ja) |
FI (1) | FI3612872T3 (ja) |
WO (1) | WO2018195510A1 (ja) |
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CN110651209A (zh) | 2020-01-03 |
US11163111B2 (en) | 2021-11-02 |
EP3612872A4 (en) | 2020-04-08 |
EP4220252A2 (en) | 2023-08-02 |
KR102423330B1 (ko) | 2022-07-20 |
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US20190025502A1 (en) | 2019-01-24 |
JP2020517997A (ja) | 2020-06-18 |
CA3061027C (en) | 2023-11-14 |
JP2022120095A (ja) | 2022-08-17 |
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CN110651209B (zh) | 2021-09-24 |
EP3612872B1 (en) | 2023-03-08 |
KR20200002938A (ko) | 2020-01-08 |
EP4220252A3 (en) | 2023-08-09 |
US10634842B2 (en) | 2020-04-28 |
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US20210048578A1 (en) | 2021-02-18 |
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