JP2022120095A - 低いビーム品質をより高いビーム品質に変換する方法 - Google Patents
低いビーム品質をより高いビーム品質に変換する方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000013307 optical fiber Substances 0.000 claims abstract description 85
- 239000000835 fiber Substances 0.000 claims abstract description 48
- 230000008569 process Effects 0.000 claims abstract description 17
- 239000002019 doping agent Substances 0.000 claims abstract description 16
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 11
- 238000005253 cladding Methods 0.000 claims description 136
- 239000010410 layer Substances 0.000 claims description 81
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 63
- 239000005350 fused silica glass Substances 0.000 claims description 38
- 239000003607 modifier Substances 0.000 claims description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- 229920000642 polymer Polymers 0.000 claims description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 11
- 229910052739 hydrogen Inorganic materials 0.000 claims description 11
- 239000001257 hydrogen Substances 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 230000005855 radiation Effects 0.000 claims description 8
- -1 rare earth ions Chemical class 0.000 claims description 8
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 5
- 206010034972 Photosensitivity reaction Diseases 0.000 claims description 2
- 239000011247 coating layer Substances 0.000 claims 2
- 230000003287 optical effect Effects 0.000 abstract description 30
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- 150000002910 rare earth metals Chemical class 0.000 abstract description 3
- 239000011162 core material Substances 0.000 description 35
- 229910003902 SiCl 4 Inorganic materials 0.000 description 18
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- 229910003910 SiCl4 Inorganic materials 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
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- 239000011248 coating agent Substances 0.000 description 7
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 6
- 238000001069 Raman spectroscopy Methods 0.000 description 6
- 229910052796 boron Inorganic materials 0.000 description 6
- 229910052731 fluorine Inorganic materials 0.000 description 6
- 239000011737 fluorine Substances 0.000 description 6
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 229910052732 germanium Inorganic materials 0.000 description 4
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical group [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 239000004038 photonic crystal Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
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- 125000001153 fluoro group Chemical group F* 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
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- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- 230000001668 ameliorated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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- 239000005304 optical glass Substances 0.000 description 1
- 230000036211 photosensitivity Effects 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
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- 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
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- 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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- 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
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- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
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- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
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- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
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- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
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- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
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- H01S3/08—Construction or shape of optical resonators or components thereof
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- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
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- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
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- G—PHYSICS
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- 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
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- 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
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- H01S3/1601—Solid materials characterised by an active (lasing) ion
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- 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
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- 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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Abstract
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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FI3612872T3 (fi) | 2023-05-08 |
EP4220252A2 (en) | 2023-08-02 |
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CN110651209B (zh) | 2021-09-24 |
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EP3612872B1 (en) | 2023-03-08 |
EP4220252A3 (en) | 2023-08-09 |
US10634842B2 (en) | 2020-04-28 |
CN110651209A (zh) | 2020-01-03 |
JP2020517997A (ja) | 2020-06-18 |
CA3061027C (en) | 2023-11-14 |
US20190025502A1 (en) | 2019-01-24 |
EP3612872A4 (en) | 2020-04-08 |
KR102423330B1 (ko) | 2022-07-20 |
CA3061027A1 (en) | 2018-10-25 |
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