JP6899924B2 - 光ファイバ、及び、レーザ装置 - Google Patents
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- JP6899924B2 JP6899924B2 JP2019562487A JP2019562487A JP6899924B2 JP 6899924 B2 JP6899924 B2 JP 6899924B2 JP 2019562487 A JP2019562487 A JP 2019562487A JP 2019562487 A JP2019562487 A JP 2019562487A JP 6899924 B2 JP6899924 B2 JP 6899924B2
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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
- G02B6/02047—Dual mode fibre
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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
- G02B6/02004—Optical fibres with cladding with or without a coating characterised by the core effective area or mode field radius
- G02B6/02009—Large effective area or mode field radius, e.g. to reduce nonlinear effects in single mode fibres
- G02B6/02014—Effective area greater than 60 square microns in the C band, i.e. 1530-1565 nm
- G02B6/02019—Effective area greater than 90 square microns in the C band, i.e. 1530-1565 nm
-
- 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
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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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- 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
- G02B6/02004—Optical fibres with cladding with or without a coating characterised by the core effective area or mode field radius
- G02B6/02009—Large effective area or mode field radius, e.g. to reduce nonlinear effects in single mode fibres
- G02B6/02023—Based on higher order modes, i.e. propagating modes other than the LP01 or HE11 fundamental mode
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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
- G02B6/03622—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 2 layers only
- G02B6/03633—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 2 layers only arranged - -
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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
- H01S2301/00—Functional characteristics
- H01S2301/03—Suppression of nonlinear conversion, e.g. specific design to suppress for example stimulated brillouin scattering [SBS], mainly in optical fibres in combination with multimode pumping
-
- 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
- H01S3/06704—Housings; Packages
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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
- H01S3/0675—Resonators including a grating structure, e.g. distributed Bragg reflectors [DBR] or distributed feedback [DFB] fibre lasers
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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
- H01S3/06754—Fibre amplifiers
- H01S3/06762—Fibre amplifiers having a specific amplification band
-
- 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
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
- H01S3/094007—Cladding pumping, i.e. pump light propagating in a clad surrounding the active core
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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
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
- H01S3/09415—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode the pumping beam being parallel to the lasing mode of the pumped medium, e.g. end-pumping
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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
- H01S3/1618—Solid materials characterised by an active (lasing) ion rare earth ytterbium
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (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
図1は、本実施形態に係るレーザ装置を示す図である。図1に示すように、本実施形態のレーザ装置1は、共振器型のファイバレーザ装置とされ、増幅用光ファイバ10と、励起光源20と、第1光ファイバ30と、第1光ファイバ30に設けられる第1FBG35と、第2光ファイバ40と、第2光ファイバ40に設けられる第2FBG45と、光コンバイナ50とを主な構成として備える。
E=Aexp[−(α+iβ)z] ・・・(1)
neff=λβ/2π ・・・(2)
Δn=(n1 2−n2 2)/(2n1 2) ・・・(3)
次に、本発明の第2実施形態について図15を参照して詳細に説明する。なお、第1実施形態と同一又は同等の構成要素については、特に説明する場合を除き、同一の参照符号を付して重複する説明は省略することがある。
次に、本発明の第3実施形態について図16を参照して詳細に説明する。なお、第1実施形態と同一又は同等の構成要素については、特に説明する場合を除き、同一の参照符号を付して重複する説明は省略する。
10・・・増幅用光ファイバ
20・・・励起光源
30・・・第1光ファイバ
31・・・コア
35・・・第1FBG
40・・・第2光ファイバ
45・・・第2FBG
60・・・光源
70・・・種光源
Claims (9)
- 波長1000nm以上1100nm以下の少なくとも一部の波長の光が少なくともLP01モードとLP11モードとでコアを伝搬可能な光ファイバであって、
前記LP01モードの光の伝搬定数と前記LP11モードの光の伝搬定数との差が1735rad/m以上4000rad/m以下であり、
LP02モードの光の理論カットオフ波長が1513nmより短波長であり、
前記コアは、直径が16μm以上29μm以下で、比屈折率差が0.1%以上0.2%以下であるステップ状の屈折率分布を有する
ことを特徴とする光ファイバ。 - 少なくとも波長1060nmの光が少なくとも前記LP01モードと前記LP11モードとで前記コアを伝搬可能である
ことを特徴とする請求項1に記載の光ファイバ。 - 前記LP01モードの光の伝搬定数と前記LP11モードの光の伝搬定数との差が1850rad/m未満である
ことを特徴とする請求項1または2に記載の光ファイバ。 - 前記LP11モードの光の理論カットオフ波長が1635nmより長波長である
ことを特徴とする請求項1から3のいずれか1項に記載の光ファイバ。 - 前記LP11モードの光の理論カットオフ波長が1760nmより長波長である
ことを特徴とする請求項4に記載の光ファイバ。 - 波長1000nm以上1100nm以下の少なくとも一部の波長の光が少なくともLP01モードとLP11モードとでコアを伝搬可能な光ファイバであって、
前記LP01モードの光の伝搬定数と前記LP11モードの光の伝搬定数との差が1735rad/m以上4000rad/m以下であり、
LP02モードの光の理論カットオフ波長が1513nmより短波長である
ことを特徴とする光ファイバ。 - 前記LP11モードの光の理論カットオフ波長が1635nmより長波長である
ことを特徴とする請求項6に記載の光ファイバ。 - 前記コアには少なくともイッテルビウムが添加される
ことを特徴とする請求項1から7のいずれか1項に記載の光ファイバ。 - 請求項1から請求項8のいずれか1項に記載の光ファイバを備える
ことを特徴とするレーザ装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017254758 | 2017-12-28 | ||
JP2017254758 | 2017-12-28 | ||
PCT/JP2018/048370 WO2019131970A1 (ja) | 2017-12-28 | 2018-12-27 | 光ファイバ、及び、レーザ装置 |
Publications (2)
Publication Number | Publication Date |
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JPWO2019131970A1 JPWO2019131970A1 (ja) | 2020-07-27 |
JP6899924B2 true JP6899924B2 (ja) | 2021-07-07 |
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JP2019562487A Active JP6899924B2 (ja) | 2017-12-28 | 2018-12-27 | 光ファイバ、及び、レーザ装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US11656402B2 (ja) |
EP (1) | EP3734336A4 (ja) |
JP (1) | JP6899924B2 (ja) |
CN (1) | CN111566526B (ja) |
WO (1) | WO2019131970A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2021251470A1 (ja) * | 2020-06-12 | 2021-12-16 | パナソニックIpマネジメント株式会社 | 発光装置及び発光システム |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS56129223A (en) | 1980-03-17 | 1981-10-09 | Toray Ind Inc | Manufacture of highly viscous polyamide |
US7103251B2 (en) * | 2002-12-31 | 2006-09-05 | Corning Incorporated | Dispersion flattened NZDSF fiber |
US7336877B2 (en) * | 2004-08-31 | 2008-02-26 | Corning Incorporated | Broadband optical fiber |
EP2179312A1 (en) * | 2007-07-20 | 2010-04-28 | Corning Incorporated | Large-mode-area optical fiber |
JPWO2009028614A1 (ja) * | 2007-08-28 | 2010-12-02 | 株式会社フジクラ | 希土類添加コアマルチクラッドファイバ、ファイバ増幅器及びファイバレーザ |
WO2009089608A1 (en) | 2008-01-17 | 2009-07-23 | Institut National D'optique | Multi-cladding fiber |
US8693834B2 (en) * | 2011-08-15 | 2014-04-08 | Corning Incorporated | Few mode optical fibers for mode division multiplexing |
WO2013038794A1 (ja) * | 2011-09-12 | 2013-03-21 | 古河電気工業株式会社 | 光ファイバ、光ファイバレーザおよび光ファイバ増幅器、ならびに光ファイバの製造方法 |
WO2013039751A1 (en) * | 2011-09-16 | 2013-03-21 | Corning Incorporated | Few mode optical fibers for mode division multiplexing |
JP5694266B2 (ja) * | 2012-10-02 | 2015-04-01 | 株式会社フジクラ | 光ファイバ及びそれを用いたファイバレーザ装置 |
JP6511235B2 (ja) | 2014-09-01 | 2019-05-15 | 株式会社フジクラ | ファイバレーザ装置 |
CN104793285B (zh) * | 2015-04-29 | 2018-01-02 | 武汉邮电科学研究院 | 低损耗少模光纤 |
JP6744074B2 (ja) * | 2015-07-16 | 2020-08-19 | 株式会社フジクラ | 光ファイバグレーティング用光ファイバおよびファイバレーザ装置 |
US10620369B2 (en) * | 2016-06-30 | 2020-04-14 | Fujikura Ltd. | Amplification optical fiber and laser device |
JP6268232B2 (ja) * | 2016-07-04 | 2018-01-24 | 株式会社フジクラ | 光ファイバ、及び、レーザ装置 |
US20210057866A1 (en) * | 2017-12-28 | 2021-02-25 | Fujikura Ltd. | Optical fiber and laser device |
US10983267B2 (en) * | 2018-03-08 | 2021-04-20 | Corning Incorporated | Quasi-single-mode optical fiber |
-
2018
- 2018-12-27 CN CN201880083874.4A patent/CN111566526B/zh active Active
- 2018-12-27 WO PCT/JP2018/048370 patent/WO2019131970A1/ja unknown
- 2018-12-27 EP EP18893405.3A patent/EP3734336A4/en active Pending
- 2018-12-27 US US16/958,332 patent/US11656402B2/en active Active
- 2018-12-27 JP JP2019562487A patent/JP6899924B2/ja active Active
Also Published As
Publication number | Publication date |
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CN111566526B (zh) | 2022-06-24 |
CN111566526A (zh) | 2020-08-21 |
WO2019131970A1 (ja) | 2019-07-04 |
US11656402B2 (en) | 2023-05-23 |
JPWO2019131970A1 (ja) | 2020-07-27 |
EP3734336A4 (en) | 2021-08-25 |
US20210066879A1 (en) | 2021-03-04 |
EP3734336A1 (en) | 2020-11-04 |
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