JPH01105903A - Coupling device for light emitting element and optical fiber - Google Patents
Coupling device for light emitting element and optical fiberInfo
- Publication number
- JPH01105903A JPH01105903A JP26459887A JP26459887A JPH01105903A JP H01105903 A JPH01105903 A JP H01105903A JP 26459887 A JP26459887 A JP 26459887A JP 26459887 A JP26459887 A JP 26459887A JP H01105903 A JPH01105903 A JP H01105903A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- light emitting
- emitting element
- holder
- coupling efficiency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 44
- 230000008878 coupling Effects 0.000 title claims abstract description 42
- 238000010168 coupling process Methods 0.000 title claims abstract description 42
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 42
- 239000000853 adhesive Substances 0.000 abstract description 10
- 238000003466 welding Methods 0.000 abstract description 10
- 230000003287 optical effect Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 description 9
- 229910000679 solder Inorganic materials 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 230000002411 adverse Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 210000005252 bulbus oculi Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 210000001508 eye Anatomy 0.000 description 1
- 210000000744 eyelid Anatomy 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、発光素子（例えば半導体レーザ、発光ダイオ
ード）からの出射光を光７了イバに高い結合効率で結合
させる装置に利用する発光素子と光ファイバの結合方法
に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a light emitting element used in a device that couples emitted light from a light emitting element (for example, a semiconductor laser, a light emitting diode) to an optical fiber with high coupling efficiency. This relates to a method for coupling optical fibers.
近年の発光素子と光ファイバの結合装置は、デジタル伝
送技術の発達で伝送量の大容量化、伝送速度の高速化、
悪環境での伝送効率の安定化がなされるとともに、−段
と高性能化する傾向にあり、特にシングルモード光ファ
イバにおいて高い結合効率金得る発光素子と光７アイパ
の結合装置や、温度変化の大きい悪環境においても安定
した結合効率を得る発光素子と光７アイバの結合装置が
必要とされている。In recent years, light emitting elements and optical fiber coupling devices have been able to increase transmission capacity, increase transmission speed, and increase transmission speed due to the development of digital transmission technology.
In addition to stabilizing transmission efficiency in adverse environments, there is a trend toward further improving performance.In particular, in single-mode optical fibers, coupling devices between light emitting elements and optical 7-ipers that can achieve high coupling efficiency, and optical 7-iper coupling devices that can withstand temperature changes are being developed. There is a need for a coupling device for a light emitting element and an optical fiber that can obtain stable coupling efficiency even in a harsh environment.
シングルモード光７了イパによる発光素子と光７アイバ
の結合装置において高い結合効率を得るためには、発光
素子と元ファイバの組立時に発光素子の３次元の位置調
整と２方向のあお）調整が必要とされている。In order to obtain high coupling efficiency in a coupling device between a light-emitting element and an optical fiber using a single-mode optical fiber, three-dimensional position adjustment and two-directional tilt adjustment of the light-emitting element are required when assembling the light-emitting element and the original fiber. is necessary.
また発光素子、光ファイバ、結合部材の組立固定に使用
する樹脂、ハンダ等の接着剤と各部分の４、＼
の大きい悪環境において発光素子と光ファイバとの位置
関係が変化するため、組立固定時の高い結合効率が悪環
境において得られなくなる。このため最近では温匿変化
の大きい悪環境においても安定した結合効軍ヲ得るため
に、樹脂、ハンダ等の接着剤を使用せず、発光素子、光
ファイバ、結合部材間の隙間を極力小さくして溶接固定
する方法が取られてきている。In addition, adhesives such as resins and solders used to assemble and fix the light-emitting element, optical fiber, and coupling members, and the positional relationship between the light-emitting element and the optical fiber change in a harsh environment where each part has a large The high coupling efficiency of time cannot be obtained in adverse environments. For this reason, in recent years, in order to obtain a stable bonding effect even in adverse environments with large temperature changes, adhesives such as resin and solder are not used, and the gap between the light emitting element, optical fiber, and coupling member is minimized as much as possible. A method of welding and fixing has been adopted.
従来の発光素子と光ファイバの結合装置は、発光素子と
、該発光素子と光７アイバを保持するとともに同軸状の
穴を有する金属部品と、該金属部品の穴に圧入され之ロ
ッドレンズと光７アイバを保持する保持部材とを含んで
構成される。A conventional coupling device for a light emitting element and an optical fiber includes a light emitting element, a metal part that holds the light emitting element and an optical fiber and has a coaxial hole, and a rod lens and an optical fiber that are press-fitted into the hole of the metal part. 7, and a holding member that holds the eye bar.
次に従来の発光素子と光ファイバの結合装置について図
面全参照して説明する。Next, a conventional coupling device for a light emitting element and an optical fiber will be described with reference to all the drawings.
第４図は従来の発光素子と光ファイバの結合装置の一例
を示す断面図である。FIG. 4 is a sectional view showing an example of a conventional coupling device for a light emitting element and an optical fiber.
第４図において、光ファイバ１１は接着剤により端末部
材工２にｉ遊され、筒状のホルダ１４上！□＼３．１７
に：
部にサポート１３ｆｃ介して半田１８．１９によって固
定される。ロッドレンズ１６はホルダ１４の中空部に半
田または接着剤によって固定される。In FIG. 4, the optical fiber 11 is loosely attached to the terminal member 2 with adhesive and placed on the cylindrical holder 14! □\3.17
To: Fixed by solder 18 and 19 through support 13fc. The rod lens 16 is fixed to the hollow part of the holder 14 with solder or adhesive.
ホルダ１４の下部には、チップ１７が中央に固定された
発光素子１５が溶接固定されている。A light emitting element 15 with a chip 17 fixed at the center is fixed by welding to the lower part of the holder 14.
チップ１７からの出射光はロッドレンズ１６によって、
端末部材１２に保持された光７フィバ１１へ結合される
。その際、その結合効果が最も高い状態になるように端
末部材１２０３次元の立１な調整と２方向のあおシ調整
を行った上で端末部材１２とサポート１３を半田１９に
よって、また、サポート１３とホルダ１４″ＩＣ半田１
８によって同定する。これはチップ１７の位置が発光素
子１５の中心に正確に位置しないことと、ロッドレンズ
１６の取付はズレによる出射方向が光ファイバ１１の中
心軸からズしていることによる。The light emitted from the chip 17 is transmitted through the rod lens 16.
The optical fiber 11 held by the terminal member 12 is coupled to the optical fiber 11 . At that time, the terminal member 120 is adjusted vertically in three dimensions and tilted in two directions so that the coupling effect is maximized, and then the terminal member 12 and the support 13 are bonded together with solder 19. and holder 14″ IC solder 1
8. This is because the position of the chip 17 is not accurately located at the center of the light emitting element 15, and the mounting of the rod lens 16 is misaligned, resulting in the emission direction being deviated from the central axis of the optical fiber 11.
上述した従来の発光素子と光ファイバの結合装置１１の
高い結合効率を得るために光７了イバ１１とサポート１
３０間に調整可能なだけの隙間を必要とし、その固定に
は端末部材１２やサポート１３と熱膨張率の異なる樹脂
、ハンダ等の接着剤を使用するので、温度変化の大きい
悪環境では発光素子１５と光ファイバ１１との位置関係
がずれてしまい組立固定時の高い結合効率が得られなく
なるという欠点があった。In order to obtain high coupling efficiency of the above-mentioned conventional light emitting element and optical fiber coupling device 11, an optical fiber 11 and a support 1 are used.
An adjustable gap is required between the terminal members 12 and the supports 13, and an adhesive such as resin or solder that has a different coefficient of thermal expansion from that of the terminal member 12 and the support 13 is used to fix the gap. There is a drawback that the positional relationship between the optical fiber 15 and the optical fiber 11 is shifted, making it impossible to obtain high coupling efficiency during assembly and fixation.
本発明の発光素子と光ファイバの結合装置は、発光素子
と、該発光素子の上部に位置し該発光素子と同軸状の穴
を有するホルダと、該ホルダの穴の中心に位置するロッ
ドレンズと、前記発光素子からの出射光軸上に位置する
光ファイバと、該光ファイバの端末部外側にある角柱状
の端末部材と、核端末部材の幅と同じ大きさで前記ロッ
ドレンズの中心軸と平行な溝を有し前記ホルダ上に位置
するサポートとを含んで構成される。A light emitting element and optical fiber coupling device of the present invention includes a light emitting element, a holder located above the light emitting element and having a hole coaxial with the light emitting element, and a rod lens located at the center of the hole of the holder. , an optical fiber located on the optical axis emitted from the light emitting element, a prismatic terminal member located outside the terminal portion of the optical fiber, and a central axis of the rod lens having the same size as the width of the nuclear terminal member. and a support having parallel grooves and located on the holder.
て詳細に説明する。 This will be explained in detail.
４１図は本発明の一実施例を示す斜視図であり、第２図
は断面図である。第３図／′ｉ第１図に示す発光素子と
光ファイバの結合位置および角度と納会効率との関係を
示す説明図である。FIG. 41 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a sectional view. FIG. 3/'i is an explanatory diagram showing the relationship between the coupling position and angle of the light emitting element and the optical fiber shown in FIG. 1, and the coupling efficiency.
第１図に示す発光素子と光ファイバの結合装置は、発光
索子５と、該発光素子５の上部に位置し該発光索子５と
同軸状の穴を有するホルダ４と、該ホルダ４の穴の中心
に位置するロッドレンズ６と、前記発光索子５からの出
射元軸上に位置する元７アイバ１と、該光ファイバ１の
端末部外側にある角柱状の端末部材２と、核端末部材２
の幅と同じ大きさで前記ロッドレンズ６の中心軸と平行
な溝を有し前記ホルダ４上に位置するサポート３とを含
んで構成される。The light emitting device and optical fiber coupling device shown in FIG. A rod lens 6 located at the center of the hole, a base 7 eyeball 1 located on the axis of the light emitted from the light emitting cord 5, a prismatic terminal member 2 located outside the terminal portion of the optical fiber 1, and a nucleus. Terminal member 2
and a support 3 located on the holder 4 and having a groove parallel to the central axis of the rod lens 6 and having the same size as the width of the rod lens.
次に、上記実施例について説明する。第１図において、
光ファイバ１と端末部材２、お工びロッドレンズ６とホ
ルダ４はあらかじめ組立固定しておく。光７アイバ１は
、元７アイバ１を通すための微小穴を有する角柱状のサ
ポート３に挿入し、ロッドレンズ６はホルダ４の発光素
子保持部と同軸状にあけられた取り付は穴に挿入して、
それぞれ樹脂、ハンダ等の接着剤によって固定する。Next, the above embodiment will be explained. In Figure 1,
The optical fiber 1, the terminal member 2, the machined rod lens 6 and the holder 4 are assembled and fixed in advance. The optical 7-eye bar 1 is inserted into a prismatic support 3 having a minute hole for passing the original 7-eye bar 1, and the rod lens 6 is attached to the hole coaxially with the light emitting element holding part of the holder 4. Insert
Each is fixed with adhesive such as resin or solder.
次に、発光素子５をその７ランク部がホルダ４の下部に
密着するように保持し発光させると、発光素子５０チッ
プ７から出射された光はロッドレンズ６にてホルダ４の
上側の近傍に集光され、ロッドレンズ６を通過した後の
光ビームの光軸がホルダ４の上面に対して垂直となるよ
うに発光素子５をＸ、Ｙ方向に調整する。この後で第２
図に示す１印を円周上にスポット溶接することによって
発光素子５をホルダ４の下部に固定するが、スポット溶
接による溶接部の変形によりロッドレンズ６と発光素子
５のチップ７の位置関係がわずかに変わり光ビーム出射
方向の角度ずれが生じてしまう。Next, when the light emitting element 5 is held so that its 7th rank part is in close contact with the lower part of the holder 4 and emitted, the light emitted from the chip 7 of the light emitting element 50 is transmitted to the vicinity of the upper side of the holder 4 by the rod lens 6. The light emitting element 5 is adjusted in the X and Y directions so that the optical axis of the light beam after being focused and passing through the rod lens 6 is perpendicular to the upper surface of the holder 4. After this, the second
The light emitting element 5 is fixed to the lower part of the holder 4 by spot welding the mark 1 shown in the figure on the circumference, but the positional relationship between the rod lens 6 and the tip 7 of the light emitting element 5 is changed due to deformation of the welded part due to spot welding. This will cause a slight deviation in the angle of the light beam emission direction.
次に、光７アイバ１の端末部にあらかじめ固定された端
末部材２をサポート３の溝部に保持し、さらにサポート
３の溝の方向がホルダ４の上面にゝ八
対して垂直とな）す；ボート３の端面がホルダ４の上面
に接するようにして、発光素子５のチップ７から出射さ
れ友光がロッドレンズ６全通力最大の結合効率にて光７
丁イパ１の端面に入射するように元７テイバ１ｔ−Ｘ、
Ｙ、Ｚ方向に位置調整するとともに、発光素子５の取力
付は時スポット溶接により角度ずれが生じた光ビームの
出射方向と光ファイバ１の方向が一致するようにθｙ、
θ２方向に角度調整する。この後で第２図に示す〉印を
スポット溶接することによって光ファイバｌｆ＆：ホル
ダ４の上面に固定する。この際スポット溶接による溶接
部の変形にＬカ光７アイバ１と発光素子５の位１！関係
がわずかに変わるが、ｘ、ｙ、ｚ方向の位置調整だけで
は第３図のＢ点の結合効率しか得られなかったのが、θ
ｙ、θ２の角度調整をすることによってＡ点の結合効率
が得られるので位置および角度がわずかに変わっても高
く安定した結合効率が得られる。また、Ａ点における結
合効率が得られればＢ点に比べて位置および角度の変化
に対する結合効率の変化がとても少なく、温度変車が得
られる。Next, the terminal member 2 fixed in advance to the terminal part of the optical fiber 1 is held in the groove of the support 3, and the direction of the groove of the support 3 is perpendicular to the upper surface of the holder 4; With the end surface of the boat 3 in contact with the top surface of the holder 4, the light 7 is emitted from the chip 7 of the light emitting element 5 and the friendly light is transmitted through the rod lens 6 with maximum coupling efficiency.
Gen 7 Teiba 1t-X so as to be incident on the end face of Teipa 1,
In addition to adjusting the position in the Y and Z directions, the attachment of the light emitting element 5 is adjusted by θy, so that the direction of the optical fiber 1 matches the emission direction of the light beam, which has been angularly shifted due to spot welding.
Adjust the angle in the θ2 direction. Thereafter, the optical fiber lf&: is fixed to the upper surface of the holder 4 by spot welding the > mark shown in FIG. At this time, due to the deformation of the welded part due to spot welding, L power 7 eyeballs 1 and light emitting element 5 digit 1! Although the relationship changes slightly, the coupling efficiency at point B in Figure 3 could only be obtained by adjusting the position in the x, y, and z directions;
Since the coupling efficiency at point A can be obtained by adjusting the angles of y and θ2, a high and stable coupling efficiency can be obtained even if the position and angle change slightly. Furthermore, if the coupling efficiency at point A is obtained, the variation in coupling efficiency with respect to changes in position and angle is much smaller than at point B, and a temperature variable wheel can be obtained.
本発明の発光素子と光７アイバの結合装置は、元７アイ
バを保持する端末部材とサポートとの間に調整可能なだ
けの隙間を設けその固定に樹脂、ハンダ等の接着剤を使
用する代わりに、端末部材とサポートとの隙間をなくし
光７テイパを溶接固定することによ、す、発光素子と光
７アイバの結合固定に同質の部材を使用し各部材の熱膨
張量を同一とすることができるため温度変化による発光
素子と光７アイバの位置関係への影響を最小にでき、か
つＸ、Ｙ、Ｚ方向の位置調整およびθｙ、θ２方向の角
度調整ができるため安定し大領域の結合効率が得られる
ので、温度変化の大きい悪環境においても高く安定した
結合効率が得られるという効果がある。The device for coupling a light emitting element and optical 7-eye bar of the present invention provides an adjustable gap between the terminal member holding the original 7-eye bar and the support, instead of using adhesives such as resin or solder for fixing the gap. By eliminating the gap between the terminal member and the support and fixing the Hikari 7 taper by welding, the same material is used to connect and fix the light emitting element and the Hikari 7 eyelid, and the amount of thermal expansion of each member is made the same. This makes it possible to minimize the influence of temperature changes on the positional relationship between the light emitting element and the optical fiber 7. Also, it is possible to adjust the position in the X, Y, and Z directions as well as the angle in the θy and θ2 directions, making it possible to stabilize and operate over a large area. Since a high coupling efficiency can be obtained, there is an effect that a high and stable coupling efficiency can be obtained even in an adverse environment with large temperature changes.
第１図は本発明の一実施例を示す斜視図、第２図は同じ
く断面図、第３図は゛第４図に示す発光素子と光ファイ
バの結合位置および角度と結合効率との関係を示す説明
図、第４図は従来の一例を示す断面図である。
１・・・・・・光ファイバ、２・・・・・・端末部材、
３・・・・・・サポート、４・・・・・・ホルダ、５・
・・・・・発光素子、６・・・・・・ロッドレンズ、７
・・・・・・チップ、１１・・・・・・元ファイバ、１
２・・・・・・接着剤、 １３・・・・・・７エルール
、１４・・・・・・光コネクタ、１５・・・・・・ホル
ダ、１６・・・・・・スリーブ、１７・・・・・・球レ
ンズ、１８・・・・・・発光素子、１９・・・・・・チ
ップ、２０・・・・・・コリメートレンズ、２１・・・
・・・接着剤、
Ａ・・・・・・Ｘ、Ｙ、Ｚ、θｙ、θ２方向調整後の結
合効率、Ｂ・・・・・・ｘ、ｙ、ｚ方向調整後の結合効
率。
代理人 弁理士 内 原 晋
箭１図
扁Ｚ図
第３０
Ｍ４図Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is a cross-sectional view, and Fig. 3 shows the relationship between the coupling position and angle of the light emitting element and the optical fiber shown in Fig. 4, and the coupling efficiency. The explanatory diagram, FIG. 4, is a sectional view showing an example of the conventional method. 1... Optical fiber, 2... Terminal member,
3...Support, 4...Holder, 5.
... Light emitting element, 6 ... Rod lens, 7
...Chip, 11...Original fiber, 1
2...adhesive, 13...7 errule, 14...optical connector, 15...holder, 16...sleeve, 17... ... Ball lens, 18 ... Light emitting element, 19 ... Chip, 20 ... Collimating lens, 21 ...
...Adhesive, A...Coupling efficiency after adjustment in X, Y, Z, θy, and θ2 directions, B...Coupling efficiency after adjustment in x, y, and z directions. Agent Patent Attorney Shinshu Uchihara Figure 1, Z diagram, 30, M4 diagram
Claims (1)
軸状の穴を有するホルダと、該ホルダの穴の中心に位置
するロッドレンズと、前記発光素子からの出射光軸上に
位置する光ファイバと、該光ファイバの端末部外側にあ
る角柱状の端末部材と、核端末部材の幅と同じ大きさで
前記ロッドレンズの中心軸と平行な溝を有し前記ホルダ
上に位置するサポートとを含むことを特徴とする発光素
子と光ファイバの結合装置。A light emitting element, a holder located above the light emitting element and having a hole coaxial with the light emitting element, a rod lens located at the center of the hole of the holder, and a rod lens located on the axis of light emitted from the light emitting element. an optical fiber, a prismatic terminal member located outside the terminal portion of the optical fiber, and a support located on the holder having a groove the same size as the width of the nuclear terminal member and parallel to the central axis of the rod lens. A coupling device for a light emitting element and an optical fiber, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26459887A JPH01105903A (en) | 1987-10-19 | 1987-10-19 | Coupling device for light emitting element and optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26459887A JPH01105903A (en) | 1987-10-19 | 1987-10-19 | Coupling device for light emitting element and optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01105903A true JPH01105903A (en) | 1989-04-24 |
Family
ID=17405534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26459887A Pending JPH01105903A (en) | 1987-10-19 | 1987-10-19 | Coupling device for light emitting element and optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01105903A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03216608A (en) * | 1990-01-22 | 1991-09-24 | Nec Corp | Holder with lens for optical coupling |
| US6157012A (en) * | 1998-09-07 | 2000-12-05 | Nippon Sheet Glass Co., Ltd. | Method of manufacturing an optical module using multiple applications of thermosetting resins and multiple heating processes |
-
1987
- 1987-10-19 JP JP26459887A patent/JPH01105903A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03216608A (en) * | 1990-01-22 | 1991-09-24 | Nec Corp | Holder with lens for optical coupling |
| US6157012A (en) * | 1998-09-07 | 2000-12-05 | Nippon Sheet Glass Co., Ltd. | Method of manufacturing an optical module using multiple applications of thermosetting resins and multiple heating processes |
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