JP2011507251A - 光ファイバへの光結合手段とカプラ製造方法 - Google Patents
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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
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2821—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals
- G02B6/2835—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals formed or shaped by thermal treatment, e.g. couplers
-
- 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
- G02B6/25—Preparing the ends of light guides for coupling, e.g. cutting
-
- 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
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2856—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers formed or shaped by thermal heating means, e.g. splitting, branching and/or combining 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
- H01S3/09—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
- H01S3/094011—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre with bidirectional pumping, i.e. with injection of the pump light from both two ends of the fibre
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- Optics & Photonics (AREA)
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- Optical Couplings Of Light Guides (AREA)
Abstract
【解決手段】本発明はポンプカプラ(2)とその製造方法に関する。ポンプカプラ(2)は、光ポンプエネルギーを出力する少なくとも1本の出力信号ファイバ(50)と、信号ファイバ(50)に光エネルギーを入力する多数のポンプファイバ(31)と、信号ファイバ(50)にポンプファイバ(31)の光エネルギーを結合する結合構造(40)とを備える。信号貫通ファイバ(32)は結合構造(40)を通り抜ける。本発明に記載の結合構造(40)は、第一の幅広端部(65)と第二の幅狭端部(70)を有するテーパーキャピラリ管(40)であり、ポンプファイバ(31)は、キャピラリ管(40)の幅広端部(65)に接続され、少なくともキャピラリ管(40)の幅狭端部(70)は、信号貫通ファイバ(32)の周囲に縮径される。
【選択図】図5a
Description
22 光軸
31 ポンプファイバ
32 信号貫通ファイバ
33 コア
40 キャピラリ管(テーパー部)
45 縮径領域
50 出力信号ファイバ
53 コア
65 第一端部(幅広)
70 第二端部(幅狭)
D1 幅広側の外径
D2 幅広側の内径
D3 幅狭側の外径
D4 幅狭側の内径
D5 ポンプファイバの直径
D6 信号貫通ファイバの直径
D7 出力信号ファイバの直径
Lc 縮径領域
Wc 壁厚
Claims (8)
- 光ポンプエネルギーを出力する少なくとも1本の出力信号ファイバ(50)と、
前記信号ファイバ(50)に光エネルギーを結合する結合構造(40)と、
前記結合構造(40)に光エネルギーを入力する多数のポンプファイバ(31)と、
前記結合構造(40)を通って信号放射を貫通する信号貫通ファイバ(32)と、
を備えるポンプカプラ(2)において、
前記結合構造(40)は、第一の幅広端部(65)と第二の幅狭端部(70)を有するテーパーキャピラリ管(40)であり、
前記ポンプファイバ(31)は、前記キャピラリ管(40)の前記幅広端部(65)に接続され、
少なくとも前記キャピラリ管(40)の前記幅狭端部(70)は、前記信号貫通ファイバ(32)の周囲に縮径される、
ことを特徴とするポンプカプラ(2)。 - 前記結合構造(40)の前記第二の幅狭端部(70)は、前記出力ファイバ(50)に接続され、前記幅狭端部(70)の外径(D3)は、前記出力信号ファイバ(50)の直径(D7)と本質的に等しいか、あるいはより小さいことを特徴とする請求項1に記載のポンプカプラ(2)。
- 前記出力信号ファイバ(50)は、ダブルクラッドファイバか、あるいはマルチクラッドファイバであることを特徴とする請求項1又は2に記載のポンプカプラ(2)。
- 前記ポンプカプラ(2)は、
NA2≦NA3
で設計され、ここでNA2は、前記キャピラリ管(40)の前記第二の幅狭端部(70)でのポンプ放射の開口数であり、NA3は、前記出力信号ファイバ(50)のポンプ導波路の開口数であることを特徴とする請求項1ないし3のいずれか1つに記載のポンプカプラ(2)。 - 光ポンプエネルギーを出力する少なくとも1本の出力信号ファイバ(50)と、
前記信号ファイバ(50)に光エネルギーを結合する結合構造(40)と、
前記結合構造(40)に光エネルギーを入力する多数のポンプファイバ(31)と、
前記結合構造(40)を通って信号放射を貫通する信号貫通ファイバ(32)と、
を備えるポンプカプラ(2)の製造方法において、
第一の幅広端部(65)と第二の幅狭端部(70)を有するテーパー状の空洞結合構造(40)を形成し、
前記ポンプファイバ(31)を、前記結合構造(40)の前記幅広端部(65)の端面と接続し、
前記信号貫通ファイバ(32)の周囲に、少なくとも前記結合構造管(40)の前記幅狭端部(70)を縮径する、
ことを特徴とするポンプカプラ(2)の製造方法。 - 前記テーパー構造は、前記結合構造(40)の外面をエッチングすることで形成されることを特徴とする請求項5に記載の方法。
- 前記テーパー構造は、前記結合構造(40)を引っ張ることで形成されることを特徴とする請求項5に記載の方法。
- 前記ポンプファイバを前記結合部品(40)と結合する前に、補助具(60)は、前記ポンプファイバを束ねるのに用いられることを特徴とする請求項5ないし7のいずれか1つに記載の方法。
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PCT/FI2007/050690 WO2009077636A1 (en) | 2007-12-14 | 2007-12-14 | Means of coupling light into optical fibers and methods of manufacturing a coupler |
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JP2014197193A (ja) * | 2013-03-15 | 2014-10-16 | オーエフエス ファイテル,エルエルシー | リング結合器 |
Also Published As
Publication number | Publication date |
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US20090154879A1 (en) | 2009-06-18 |
JP5649973B2 (ja) | 2015-01-07 |
US7991255B2 (en) | 2011-08-02 |
US20090154882A1 (en) | 2009-06-18 |
EP2071375B1 (en) | 2016-03-09 |
WO2009077636A1 (en) | 2009-06-25 |
EP2071375A1 (en) | 2009-06-17 |
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