JP6097778B2 - マルチモード・ファイバ - Google Patents
マルチモード・ファイバ Download PDFInfo
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- JP6097778B2 JP6097778B2 JP2015038299A JP2015038299A JP6097778B2 JP 6097778 B2 JP6097778 B2 JP 6097778B2 JP 2015038299 A JP2015038299 A JP 2015038299A JP 2015038299 A JP2015038299 A JP 2015038299A JP 6097778 B2 JP6097778 B2 JP 6097778B2
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- 239000013307 optical fiber Substances 0.000 claims 3
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- 239000002019 doping agent Substances 0.000 description 9
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- -1 fluoride ions Chemical class 0.000 description 4
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- 239000010452 phosphate Substances 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
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- 238000013459 approach Methods 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
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- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
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Images
Classifications
-
- 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
- G02B6/0288—Multimode fibre, e.g. graded index core for compensating modal dispersion
-
- 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
-
- 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
-
- 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
- G02B6/02295—Microstructured optical fibre
- G02B6/02314—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
- G02B6/02319—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes characterised by core or core-cladding interface features
- G02B6/02333—Core having higher refractive index than cladding, e.g. solid core, effective index guiding
-
- 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
- G02B6/03611—Highest index adjacent to central axis region, e.g. annular core, coaxial ring, centreline depression affecting waveguiding
-
- 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
-
- 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
- H01S3/06745—Tapering of the fibre, core or active region
-
- 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
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/14—Mode converters
-
- 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
- H01S3/06737—Fibre having multiple non-coaxial cores, e.g. multiple active cores or separate cores for pump and gain
-
- 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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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Lasers (AREA)
- Optical Integrated Circuits (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Description
Claims (1)
- 長手方向のファイバ軸に沿って延びる光ファイバであって、
前記ファイバ軸に沿って集中した少なくとも1つのクラッディングと、
前記1つのクラッディングと同軸であり且つ前記1つのクラッディングによって包囲される細長いマルチモード(MM)コアであって、光ファイバの両側の端の間を延びるマルチモード(MM)コアと、
を備え、前記MMコアが、実質的に基本モードのみの励起及び歪みのないガイダンスを提供するように二重のボトルネックをもつ形状にされた断面をもつように構成され、
前記MMコアの前記二重のボトルネックをもつ形状にされた断面が、
入力モード変換部領域及び出力モード変換部領域であって、前記変換部領域が比較的小さい端と比較的大きい端を各々有するように、互いから軸方向に離間され且つ円錐台形に形状設定された断面を各々有する、入力モード変換部領域及び出力モード変換部領域と、
前記入力モード変換部領域及び出力モード変換部領域のそれぞれの大きい端にブリッジをかける一様な寸法にされた中央領域と、
前記入力モード変換部領域の小さい端の中に走る一様な寸法にされた入力端領域であって、前記入力端領域に打ち出される単一モード(SM)入力ビームに応答して、その中で実質的に基本モードのみが励起されるように構成される、入力端領域と、
実質的に前記基本モードで放射を出力するように、前記出力変換部から延び、且つ前記出力変換部から前記基本モードを受信する、一様な寸法にされた出力端領域とを含み、
前記MMコアが、中央に位置付けられた凹部を有するステップ型屈折率プロフィールをもつように構成され、前記入力端領域における前記SM入力ビーム及び前記基本モードが、それぞれのモード・フィールド直径(MFD)が互いに実質的に整合するように形状設定されるそれぞれの実質的にガウス強度プロフィールを有し、
前記中央領域に沿って延びる前記凹部が、一様な幅をもつように構成され、
前記基本モードのリング・プロフィールが、前記コアの前記ステップ型屈折率の対称軸から等距離に離間された2つのピークパワー領域と、対称軸を中心とし且つピークパワー領域にブリッジをかける谷とを備えるように形状設定され、
前記コアが、前記対称軸から離間され且つ前記ステップ型屈折率の周辺から或る距離で終端するドープされたリングの形状にされた領域を備えるように構成され、前記ドープされた領域が、中央のHOM及び周辺のHOMの増幅なしに前記基本モードのピークパワー領域へのゲインを提供する、光ファイバ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/559,284 US8068705B2 (en) | 2009-09-14 | 2009-09-14 | Single-mode high-power fiber laser system |
US12/559,284 | 2009-09-14 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012528864A Division JP5827949B2 (ja) | 2009-09-14 | 2010-09-08 | マルチモード・ファイバ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2015132841A JP2015132841A (ja) | 2015-07-23 |
JP6097778B2 true JP6097778B2 (ja) | 2017-03-15 |
Family
ID=43730504
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012528864A Active JP5827949B2 (ja) | 2009-09-14 | 2010-09-08 | マルチモード・ファイバ |
JP2015038299A Active JP6097778B2 (ja) | 2009-09-14 | 2015-02-27 | マルチモード・ファイバ |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012528864A Active JP5827949B2 (ja) | 2009-09-14 | 2010-09-08 | マルチモード・ファイバ |
Country Status (6)
Country | Link |
---|---|
US (3) | US8068705B2 (ja) |
EP (1) | EP2478398B1 (ja) |
JP (2) | JP5827949B2 (ja) |
KR (2) | KR101750861B1 (ja) |
CN (3) | CN104112973B (ja) |
WO (1) | WO2011031704A2 (ja) |
Families Citing this family (51)
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