JP2001208928A - Method for positioning plane type optical part - Google Patents
Method for positioning plane type optical partInfo
- Publication number
- JP2001208928A JP2001208928A JP2000015339A JP2000015339A JP2001208928A JP 2001208928 A JP2001208928 A JP 2001208928A JP 2000015339 A JP2000015339 A JP 2000015339A JP 2000015339 A JP2000015339 A JP 2000015339A JP 2001208928 A JP2001208928 A JP 2001208928A
- Authority
- JP
- Japan
- Prior art keywords
- plug
- planar optical
- optical component
- type optical
- optical
- 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.)
- Granted
Links
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、平面型光部品の位
置合わせ方法に関する。詳しくは、光部品の位置合わせ
・接続方法に関するものである。The present invention relates to a method for aligning a planar optical component. More specifically, the present invention relates to a method for aligning and connecting optical components.
【０００２】[0002]
【従来の技術】これまでの光部品の位置合わせ・接続方
法として割スリーブ内でフェルールを突き合わせる方法
（ＳＣ、ＭＵコネクタ等）、フェルールに設置した位置
決め用ピンを用いる方法（ＭＴコネクタ）及び光を入射
して調心する方法が知られている。しかし、これらコネ
クタで用いられている技術では平面型光部品の実装は難
しく、またフェルールヘ設置した場合も研磨等の繁雑な
工程が残っている。一方、光を入射する方法では調心装
置等の設備が必要である。2. Description of the Related Art Conventional methods for aligning and connecting optical components include a method of abutting a ferrule in a split sleeve (SC, MU connector, etc.), a method of using a positioning pin installed on a ferrule (MT connector), and an optical device. There is known a method of centering by incident light. However, it is difficult to mount a planar optical component using the technology used for these connectors, and when the optical component is mounted on a ferrule, complicated steps such as polishing remain. On the other hand, the method of incident light requires equipment such as a centering device.
【０００３】[0003]
【発明が解決しようとする課題】本発明が解決しようと
する課題は、光を入射せずに容易に平面型光部品を光フ
ァイバ又は他の平面型光部品に接続することにある。An object of the present invention is to easily connect a planar optical component to an optical fiber or another planar optical component without incident light.
【０００４】[0004]
【課題を解決するための手段】本発明は、平面型光部品
を光ファイバ又は他の平面型光部品に接続する場合に位
置合わせ基板又は位置合わせ用アダプタを用いることを
特徴とし、平面型光部品の先端部と位置合わせ基板又は
アダプタの嵌め合せ部構造を等脚台形にすることによ
り、位置合わせ精度を向上した。本発明においては、複
数の光導波路とは、光が導波する平面型光部品に限ら
ず、光ファイバを含むものであり、従って、光が導波す
る平面型光部品を光ファイバ又は他の平面型光部品に接
続する場合に適用されるものである。SUMMARY OF THE INVENTION The present invention is characterized in that when a planar optical component is connected to an optical fiber or another planar optical component, a positioning substrate or a positioning adapter is used. The positioning accuracy is improved by making the structure of the fitting portion between the tip of the component and the positioning board or adapter into an equilateral trapezoidal shape. In the present invention, the plurality of optical waveguides is not limited to a planar optical component in which light is guided, but includes an optical fiber.Therefore, the planar optical component in which light is guided is an optical fiber or another optical waveguide. This is applied when connecting to a flat optical component.
【０００５】[0005]
【発明の実施の形態】〔実施例１〕平面型光部品の先端
部表面に等脚台形構造としたプラグを形成し、プラグ受
容体として位置合わせ基板を用いた光部品の接続を試み
た。等脚台形構造にすることはエッチング時におこるエ
ッチバックによる位置ずれを防ぐ効果をもつ。図１には
形成する等脚台形の設計指針を示す。等脚台形の凸型、
凹型が動くことなく嵌め合うには図に示す角度θが９０
°未満である必要がある。[Embodiment 1] A plug having an isosceles trapezoidal structure was formed on the surface of the tip of a planar optical component, and an attempt was made to connect the optical component using an alignment substrate as a plug receiver. The use of an isosceles trapezoidal structure has an effect of preventing displacement due to etch back that occurs during etching. FIG. 1 shows a design guide of an isosceles trapezoid to be formed. Trapezoidal convex,
The angle θ shown in the figure is 90 to fit the concave mold without moving.
° must be less.
【０００６】 つまり、θ＝１８０°−α−β＜９０° …（１） である。等脚台形の上底の長さをｄ、下底の長さをｗ、
高さをＬとすると、 ｔａｎα＝２Ｌ／ｗ−ｄ …（２） ｔａｎβ＝２Ｌ／ｗ＋ｄ …（３） となり、よって、式（１）は ｔａｎ-1（２Ｌ／（ｗ−ｄ））＋ｔａｎ-1（２Ｌ／（ｗ＋ｄ））＞９０° …（４） となる。式（４）が等脚台形が動くことなく嵌め合う条
件であり、この式を満足することにより、接続精度が向
上できる。That is, θ = 180 ° −α−β <90 ° (1). The length of the upper base of an isosceles trapezoid is d, the length of the lower base is w,
Assuming that the height is L, tanα = 2L / wd (2) tanβ = 2L / w + d (3) Therefore, the equation (1) is expressed as tan −1 (2L / (wd)) + tan −. 1 (2L / (w + d))> 90 ° (4) Equation (4) is the condition under which the isosceles trapezoids fit without moving, and by satisfying this equation, the connection accuracy can be improved.
【０００７】上記設計指針を元に作製した等脚台形構造
をもつ平面型光部品と位置合わせ基板の設計図を図２に
示す。図２（ａ）に示す平面型光カプラ１０は、シリコ
ン基板上にガラス堆積法でコアとクラッドを形成して作
製し、その後、先端の入力部を等脚台形形状に、かつ全
体が凸型となるように周囲をエッチング除去したプラグ
である。エッチング深さは３０μｍである。FIG. 2 shows a plan view of a planar optical component having an equal-leg trapezoidal structure and a positioning substrate manufactured based on the above design guidelines. The planar optical coupler 10 shown in FIG. 2A is manufactured by forming a core and a clad on a silicon substrate by a glass deposition method, and thereafter, the input portion at the tip is formed in an isosceles trapezoid shape, and the whole is convex. This is a plug whose periphery has been removed by etching so that The etching depth is 30 μm.
【０００８】図２（ｂ）（ｃ）に示す位置合わせ基板
は、何れも、同図（ａ）に示す平面型光カプラ１０を嵌
め込むために等形状で凹型となるように設計し、熱硬化
性樹脂を用いた射出成形法で作製したプラグ受容体であ
る。図２（ｂ）は、平面型光カプラ１０と光ファイバを
接続する基板２０であり、一方側には、平面型光カプラ
１０を嵌め込む平面型光カプラ取り付け用凹部２を形成
し、他方側に光ファイバを取り付けるＶ溝３を形成して
いる。一方、図２（ｃ）は平面型光カプラ１０同士を接
続する基板３０であり、平面型光カプラ１０を嵌め込む
平面型光カプラ取り付け用凹部２を向かい合わせて形成
している。Each of the alignment substrates shown in FIGS. 2 (b) and 2 (c) is designed so as to have a uniform and concave shape to fit the planar optical coupler 10 shown in FIG. It is a plug receiver manufactured by an injection molding method using a curable resin. FIG. 2B shows a substrate 20 for connecting the planar optical coupler 10 and the optical fiber, and a flat optical coupler mounting recess 2 into which the planar optical coupler 10 is fitted is formed on one side, and the other side. A V-groove 3 for attaching an optical fiber is formed on the substrate. On the other hand, FIG. 2C shows a substrate 30 for connecting the planar optical couplers 10, wherein the planar optical coupler mounting recesses 2 in which the planar optical couplers 10 are fitted face each other.
【０００９】ここで、平面型光カプラ１０や光ファイバ
を位置合わせ基板に嵌め込めば自動的に位置合わせ・接
続できることになる。上述したように作製した平面型光
カプラを位置合わせ基板に装着したときの接続Ｌｏｓｓ
の累積ヒストグラムを図３に示す。また、式（４）を満
たさない条件で作成した場合を図４に示す。両図を比較
すれば明らかなように、式（４）を満たす等脚台形構造
の方が良好な接続特性が観測された。ここで、θ＝０°
（１８０°）の場合は、図４とほぼ同じ結果であった。Here, if the flat optical coupler 10 and the optical fiber are fitted into the positioning substrate, the positioning and connection can be automatically performed. Connection Loss when the planar optical coupler manufactured as described above is mounted on the alignment substrate
3 is shown in FIG. FIG. 4 shows a case where the image is created under the condition that does not satisfy Expression (4). As is clear from the comparison between the two figures, better connection characteristics were observed for the isosceles trapezoidal structure satisfying the expression (4). Where θ = 0 °
In the case of (180 °), the result was almost the same as that in FIG.
【００１０】〔実施例２〕本実施例に係る平面型光カプ
ラと接続アダプタの構造を図５（ａ）（ｂ）に示す。本
実施例は、実施例１の設計指針に基づき、表面ではなく
全体を等脚台形形状に加工した平面型光カプラと接続用
アダプタを作製し、その接続特性を調べたものである。
平面型光カプラ１０は実施例１と同様に作製し、先端の
等脚台形形状はダイシングソーを用いて形成した。Embodiment 2 FIGS. 5A and 5B show the structure of a planar optical coupler and a connection adapter according to this embodiment. In the present embodiment, based on the design guideline of the first embodiment, a flat optical coupler and a connection adapter were manufactured in which the entire surface, not the surface, was processed into an isosceles trapezoid shape, and the connection characteristics were examined.
The planar optical coupler 10 was produced in the same manner as in Example 1, and the trapezoidal shape at the tip was formed using a dicing saw.
【００１１】接続アダプタ４０は、熱硬化性樹脂を用い
た射出成形法で、平面型光カプラの先端形状に対して２
μｍ大きくなるように平面型カプラ挿入口４を向かい合
わせて作製した。接続Ｌｏｓｓの累積ヒストグラムを図
６に示す。図６（ａ）は式（４）を満たす場合、図６
（ｂ）は満たさない場合であり、明らかに実施例１と同
様、式（４）を満たす場合において良好な接続特性が得
られた。The connection adapter 40 is formed by injection molding using a thermosetting resin.
The planar coupler insertion openings 4 were made to face each other so as to increase the size by μm. FIG. 6 shows a cumulative histogram of the connection Loss. FIG. 6A shows the case where the equation (4) is satisfied.
(B) is a case where the condition is not satisfied, and as in the case of the first embodiment, when the expression (4) is satisfied, good connection characteristics are obtained.
【００１２】尚、本発明におけるプラグとして、図２
（ａ）に示す実施例１のように平面基板上に等脚台形形
状を形成したものでも良いし、図５（ａ）（ｂ）に示す
本実施例のように基板全体を等脚台形形状としても良
い。FIG. 2 shows a plug according to the present invention.
A trapezoidal shape having an isosceles shape formed on a flat substrate as in the first embodiment shown in FIG. 5A may be used, or the entire substrate may be formed into a trapezoidal shape having an isosceles shape as in this embodiment shown in FIGS. It is good.
【００１３】[0013]
【発明の効果】以上、実施例に基づいて詳細に説明した
ように、本発明によれば、平面型光部品を光ファイバ又
は他の平面型光部品に接続する場合に、先端部を等脚台
形としたプラグと、そのプラグが受容されるプラグ受容
体を用いて光導波路を位置合せしたので、位置合わせ精
度を向上できた。このことは、簡易に光部品同士を接続
できることを意味し、光部品の集積化が可能となる。As described above in detail with reference to the embodiments, according to the present invention, when connecting a planar optical component to an optical fiber or another planar optical component, the distal end is equiped. Since the optical waveguide was aligned using the trapezoidal plug and the plug receiver for receiving the plug, the alignment accuracy was improved. This means that the optical components can be easily connected to each other, and the optical components can be integrated.
【図１】図１は形成する等脚台形の設計指針を示す説明
図である。FIG. 1 is an explanatory view showing a design guideline of an isosceles trapezoid to be formed.
【図２】図２は作製した等脚台形構造をもつ平面型光部
品と位置合わせ基板の設計図を示し、同図（ａ）は平面
型光カプラであり、先端の入力部を等脚台形に、かつ全
体が凸型となるように周囲をエッチングしており、同図
（ｂ）は平面型光カプラと光ファイバを接続する基板を
示し、同図（ｃ）は平面型光カプラ同士を接続する基板
を示す。FIG. 2 shows a design drawing of a manufactured flat optical component having an isosceles trapezoidal structure and an alignment substrate, and FIG. 2 (a) shows a planar optical coupler in which an input part at the tip is an isosceles trapezoid. FIG. 2 (b) shows a substrate for connecting the planar optical coupler and the optical fiber, and FIG. 3 (c) shows the planar optical couplers. 2 shows a substrate to be connected.
【図３】図３は作製した平面型光カプラを位置合わせ基
板に装着したときの接続Ｌｏｓｓの累積ヒストグラムを
示し、同図（ａ）は平面型光カプラと光ファイバを接続
した場合を示し、同図（ｂ）は平面型光カプラ同士を接
続した場合を示す。FIG. 3 shows a cumulative histogram of connection loss when the manufactured planar optical coupler is mounted on an alignment substrate, and FIG. 3 (a) shows a case where the planar optical coupler is connected to an optical fiber; FIG. 1B shows a case where planar optical couplers are connected to each other.
【図４】図４は式（４）を満たさない条件で作製した平
面型光カプラを位置合わせ基板に装着したときの接続Ｌ
ｏｓｓの累積ヒストグラムであり、同図（ａ）は式
（４）を満たさない条件で平面型光カプラと光ファイバ
を接続した場合を示し、同図（ｂ）は式（４）を満たさ
ない条件で平面型光カプラ同士を接続した場合を示す。FIG. 4 is a diagram illustrating a connection L when a planar optical coupler manufactured under a condition not satisfying Expression (4) is mounted on an alignment substrate;
(a) shows a case where the planar optical coupler and the optical fiber are connected under a condition that does not satisfy Expression (4), and FIG. (b) shows a condition under which the expression (4) is not satisfied. Shows a case where planar optical couplers are connected to each other.
【図５】図５は作製した等脚台形構造をもつ平面型光部
品と位置合わせアダプタを示す設計図である。FIG. 5 is a design diagram showing a manufactured flat optical component having an isosceles trapezoidal structure and a positioning adapter.
【図６】図６は作製した平面型光カプラを位置合わせア
ダプタに装着したときの接続Ｌｏｓｓの累積ヒストグラ
ムであり、同図（ａ）は式（４）を満たす条件で平面型
光カプラ同士を接続した場合を示し、同図（ｂ）は式
（４）を満たさない条件で平面型光カプラ同士を接続し
た場合を示す。FIG. 6 is a cumulative histogram of connection loss when the manufactured planar optical coupler is mounted on a positioning adapter, and FIG. 6 (a) shows the relationship between planar optical couplers under a condition satisfying Expression (4). FIG. 4B shows a case where the planar optical couplers are connected under a condition that does not satisfy Expression (4).
２ 平面型光カプラ取り付け用凹部 ３ Ｖ溝 １０ 平面型光カプラ ２０，３０ 基板 ４０ 接続用アダプタ 2 recess for mounting a planar optical coupler 3 V groove 10 planar optical coupler 20, 30 substrate 40 adapter for connection
───────────────────────────────────────────────────── フロントページの続き (72)発明者 橋本 俊和 東京都千代田区大手町二丁目３番１号 日 本電信電話株式会社内 (72)発明者 住田 真 東京都千代田区大手町二丁目３番１号 日 本電信電話株式会社内 Ｆターム(参考） 2H036 LA03 QA01 QA46 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshikazu Hashimoto 2-3-1 Otemachi, Chiyoda-ku, Tokyo Within Nippon Telegraph and Telephone Corporation (72) Inventor Makoto Sumita 2-3-3, Otemachi, Chiyoda-ku, Tokyo No. 1 F-term in Nippon Telegraph and Telephone Corporation (reference) 2H036 LA03 QA01 QA46
Claims (3)
学接続するための位置合わせ方法であって、前記光導波
路の一方として光が導波する平面型光部品を用い、前記
光導波路の他方として光が導波する光ファイバを用いる
場合には、前記平面型光部品の先端部を等脚台形状とし
たプラグと、前記プラグの受容されるプラグ受容部とを
少なくとも有し、前記プラグが前記プラグ受容部に受容
された状態で対向する前記光導波路が相互に光学接続さ
れることを特徴とする平面型光部品の位置合わせ方法。1. An alignment method for optically connecting one or more optical waveguides so that one or more optical waveguides face each other, wherein a planar optical component through which light is guided is used as one of the optical waveguides. In the case where an optical fiber that guides light is used as the other side, the flat type optical component has at least a plug having a tip portion having an isosceles trapezoidal shape and a plug receiving portion for receiving the plug, and the plug has Wherein the opposing optical waveguides are optically connected to each other while being received by the plug receiving portion.
学接続するための位置合わせ方法であって、前記光導波
路として何れも、光が導波する平面型光部品を用いる場
合には、前記平面型光部品の先端部を等脚台形状とした
プラグと、前記プラグがそれぞれ受容されるプラグ受容
部とを少なくとも有し、前記プラグが前記プラグ受容部
にそれぞれ受容された状態で対向する前記光導波路が相
互に光学接続されることを特徴とする平面型光部品の位
置合わせ方法。2. A positioning method for optically connecting one or more optical waveguides to face each other, wherein each of the optical waveguides uses a planar optical component that guides light. The flat optical component has at least a plug having a tip portion having an isosceles trapezoidal shape and a plug receiving portion for receiving the plug, and the plugs face each other in a state of being received by the plug receiving portion. A method for positioning a planar optical component, wherein the optical waveguides are optically connected to each other.
置合わせ方法において、等脚台形形状が下式を満足する
ことを特徴とする平面型光部品の位置合わせ方法。 ｔａｎ-1（２Ｌ／（ｗ−ｄ））＋ｔａｎ-1（２Ｌ／（ｗ
＋ｄ））＞９０° 但し、ｄ：上底の長さ ｗ：下底の長さ Ｌ：高さ3. The method for positioning a planar optical component according to claim 1, wherein the trapezoidal shape of an equal leg satisfies the following expression. tan -1 (2L / (wd)) + tan -1 (2L / (w
+ D))> 90 ° where d: length of upper base w: length of lower base L: height
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000015339A JP3573200B2 (en) | 2000-01-25 | 2000-01-25 | Positioning method for planar optical components |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000015339A JP3573200B2 (en) | 2000-01-25 | 2000-01-25 | Positioning method for planar optical components |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001208928A true JP2001208928A (en) | 2001-08-03 |
| JP3573200B2 JP3573200B2 (en) | 2004-10-06 |
Family
ID=18542659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000015339A Expired - Lifetime JP3573200B2 (en) | 2000-01-25 | 2000-01-25 | Positioning method for planar optical components |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3573200B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11287926A (en) * | 1997-03-13 | 1999-10-19 | Nippon Telegr & Teleph Corp <Ntt> | Optical element mounting substrate, optical module using the same and production thereof |
-
2000
- 2000-01-25 JP JP2000015339A patent/JP3573200B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11287926A (en) * | 1997-03-13 | 1999-10-19 | Nippon Telegr & Teleph Corp <Ntt> | Optical element mounting substrate, optical module using the same and production thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3573200B2 (en) | 2004-10-06 |
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