JP2005519342A - ビーム曲げ装置およびその製造方法 - Google Patents
ビーム曲げ装置およびその製造方法 Download PDFInfo
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- JP2005519342A JP2005519342A JP2003575158A JP2003575158A JP2005519342A JP 2005519342 A JP2005519342 A JP 2005519342A JP 2003575158 A JP2003575158 A JP 2003575158A JP 2003575158 A JP2003575158 A JP 2003575158A JP 2005519342 A JP2005519342 A JP 2005519342A
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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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4202—Packages, e.g. shape, construction, internal or external details for coupling an active element with fibres without intermediate optical elements, e.g. fibres with plane ends, fibres with shaped ends, bundles
- G02B6/4203—Optical features
-
- 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
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2552—Splicing of light guides, e.g. by fusion or bonding reshaping or reforming of light guides for coupling using thermal heating, e.g. tapering, forming of a lens on light guide ends
-
- 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
-
- 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
- G02B6/30—Optical coupling means for use between fibre and thin-film device
-
- 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
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4202—Packages, e.g. shape, construction, internal or external details for coupling an active element with fibres without intermediate optical elements, e.g. fibres with plane ends, fibres with shaped ends, bundles
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4206—Optical features
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optical Couplings Of Light Guides (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Lenses (AREA)
- Semiconductor Lasers (AREA)
Abstract
Description
本発明によれば、n1は光信号が進む媒体の屈折率であり、n2は光信号が進む材料に境界づけられる媒体の屈折率である。本発明によれば、n2は一般に空気の屈折率であり、n1はGRINファイバレンズ24の屈折率である。本発明の一態様によれば、入射角Фiが臨界角Фcより大きい場合には、反射面26を画定する斜面の他の反射材は不要である。
式中、rは波面の曲率半径であり、wはガウスビームのモードフィールド半径であり、wavは光の波長である。
q2=(A*q1+B)/(C*q1+D)
によって与えられる。式中、A、B、C、Dはそれぞれ、入射面84および出射面86の光線変数に関連する光線行列の要素である。
特定の位置におけるレンズの幾何構成、設計変数およびMFD変数
平面83:源82の出力:wav、wx0、wy0:源82の波長およびx方向およびy方向のモードフィールド
平面84:材料屈折率(n1)のZを伝搬するが、バイコニックレンズの前
wx1、wy1:平面84におけるビームのモードフィールド径
rx1、ry1:波面の曲率半径
平面86:材料屈折率ncを有する半径Rx,Ryのバイコニックレンズの直後
wx2、wy2
rx2、ry2
平面88:長さLcおよび屈折率ncのスペーサロッドにおいて伝搬し、GRINファイバレンズ24の直前
wx3、wy3
rx3、ry3
平面90:長さLg、平均屈折率ng、屈折率の差=Δ、コア半径=aのGRINファイバレンズ24を伝搬した後、ピグテールファイバの直前
wx4、wy4
rx4、ry4
オフラインビーム曲げ装置に関する特殊な例
上述の手法を用いて、レーザダイオード結合用途の場合のビーム曲げ装置の設計変数を算出し最適化してもよい。作動距離の関数として行われた結合効率の計算が、図9に示されている。この曲線に基づき、この設計に関する最適作動距離は約50.0μmであり、実際の実装および位置合せ要件に関する合理的な値である。レーザダイオード特性および他の設計変数は、以下に列挙される。
X方向におけるモードフィールド半径w0x:0.9μm
Y方向におけるモードファイルド半径w0y:3.6μm
他の設計変数
バイコニックレンズのX方向の曲率半径RLx:25μm
スペーサロッドの長さLc:40.0
GRINファイバの長さLg:1170μm
GRINファイバの屈折率の差Δ:0.01
GRINファイバのコア半径a:62.5
シングルモードピグテールファイバのモードフィールド:5.2μm
実施例は、例示の目的のためにのみ与えられており、用途に基づいて変化する。上記の実施例は、以下の参考文献を参照すればより明確に理解されると思われる。W・L・エムケー(W.L.Emkey)およびC・ジャック(C.Jack)著、JLT−5、1987年9月、p.1156〜1164;H・コーゲルニック(H.Kogelnik)著、Applied Optics、1965年12月4日、p.1562;R・キシモト(R.Kishimoto)およびM・コヤマ(M.Koyama)著、「Transactions on Microwave Theory and Applications」、IEEE MTT−30、1982年6月、p.882;B・E・A・サラ(B.E.A.Saleh)およびM・C・タイヒ(M.C.Teich)著、「Photonics」、John Wiley & Sons,Inc.、1991。それぞれ本願明細書に参照によって包含されるものとする。
Claims (11)
- 光信号のモードフィールドを変更するための装置であって、
GRINファイバレンズおよび
前記GRINファイバレンズの一端に配置される反射面であって、前記GRINファイバレンズと協働して、前記反射面に対して向けられた光信号の経路を再方向付けするように構成される反射面
を有することを特徴とする装置。 - 光ファイバをさらに有し、前記反射面から遠い前記GRINファイバレンズの端部が前記光ファイバに固着されることを特徴とする、請求項1記載の装置。
- 前記反射面が曲面を有し、前記曲面が前記GRINファイバレンズの長手方向のアクセスに対して一定の角度で傾斜させられ、研磨またはレーザマイクロマシニングによって前記GRINファイバレンズの前記端部に形成されることを特徴とする、請求項1記載の装置。
- 前記GRINファイバレンズがボールレンズを有し、前記反射面が傾斜面を含み、かつ前記ボールレンズの表面の少なくとも一部に配置されることを特徴とする、請求項1記載の装置。
- 前記GRINファイバレンズが前記反射面に対して位置決めされる曲面を有し、前記装置に入射または前記装置から出射する光信号と通信を行うことを特徴とする、請求項1記載の装置。
- 前記装置は光軸を画定し、前記曲面は互いに対してほぼ直角に配置される2つの異なる曲線、大曲線C1および小曲線C2によって画定され、前記曲線C1およびC2は前記光軸またはその付近で交差することを特徴とする、請求項5記載の装置。
- 前記GRINファイバレンズが前記反射面に対して位置決めされる平面を有し、前記装置に入射または前記装置から出射する光信号を送受信することを特徴とする、請求項1記載の装置。
- 前記反射面が斜面を有し、前記斜面が前記GRINファイバレンズの前記端部に形成されることを特徴とする、請求項1記載の装置。
- 前記GRINファイバレンズが複数のGRINファイバレンズを有し、前記マルチレンズ装置がそれぞれ半径方向に一定の屈折率を有する1つ以上のスペーサロッドをさらに有し、前記1つ以上のスペーサロッドが、1つ以上の光ファイバと前記複数のGRINファイバレンズとの間に位置決めされることを特徴とする、請求項2記載の装置。
- 前記反射面が、斜面および前記斜面上に形成される反射非球面を有することを特徴とする、請求項1記載の装置。
- 光学部品と、
前記光学部品を支持するように構成される基板と、
前記光学部品との間を通過する光信号のモードフィールドを変更するように前記基板上に前記光学部品に対して位置決めされる装置であって、GRINファイバレンズと、前記GRINファイバレンズの一端に配置される反射面を有し、前記反射面が前記GRINファイバレンズと協働して、前記反射面に対して向けられた光信号の経路を再方向付けするように構成されることを特徴とする、光学アセンブリ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US36178702P | 2002-03-04 | 2002-03-04 | |
US10/202,516 US6904197B2 (en) | 2002-03-04 | 2002-07-23 | Beam bending apparatus and method of manufacture |
PCT/US2003/006068 WO2003076993A1 (en) | 2002-03-04 | 2003-02-27 | Beam bending apparatus and method of manufacture |
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JP2010276057A Division JP5070330B2 (ja) | 2002-03-04 | 2010-12-10 | ビーム曲げ装置およびその製造方法 |
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JP2005519342A true JP2005519342A (ja) | 2005-06-30 |
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ID=27807517
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JP2003575158A Pending JP2005519342A (ja) | 2002-03-04 | 2003-02-27 | ビーム曲げ装置およびその製造方法 |
JP2010276057A Expired - Fee Related JP5070330B2 (ja) | 2002-03-04 | 2010-12-10 | ビーム曲げ装置およびその製造方法 |
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JP2010276057A Expired - Fee Related JP5070330B2 (ja) | 2002-03-04 | 2010-12-10 | ビーム曲げ装置およびその製造方法 |
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US (1) | US6904197B2 (ja) |
EP (1) | EP1481274B1 (ja) |
JP (2) | JP2005519342A (ja) |
CN (1) | CN1307448C (ja) |
AU (1) | AU2003219941A1 (ja) |
DE (1) | DE60304841T2 (ja) |
TW (1) | TWI252338B (ja) |
WO (1) | WO2003076993A1 (ja) |
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EP1481274B1 (en) | 2006-04-26 |
TWI252338B (en) | 2006-04-01 |
DE60304841T2 (de) | 2006-11-23 |
EP1481274A1 (en) | 2004-12-01 |
AU2003219941A1 (en) | 2003-09-22 |
CN1650207A (zh) | 2005-08-03 |
TW200403457A (en) | 2004-03-01 |
WO2003076993A1 (en) | 2003-09-18 |
CN1307448C (zh) | 2007-03-28 |
JP2011123493A (ja) | 2011-06-23 |
US6904197B2 (en) | 2005-06-07 |
US20030165291A1 (en) | 2003-09-04 |
JP5070330B2 (ja) | 2012-11-14 |
DE60304841D1 (de) | 2006-06-01 |
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