JPH0579505U - Optical waveguide and optical fiber connection structure - Google Patents
Optical waveguide and optical fiber connection structureInfo
- Publication number
- JPH0579505U JPH0579505U JP1561292U JP1561292U JPH0579505U JP H0579505 U JPH0579505 U JP H0579505U JP 1561292 U JP1561292 U JP 1561292U JP 1561292 U JP1561292 U JP 1561292U JP H0579505 U JPH0579505 U JP H0579505U
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- optical waveguide
- optical
- connection structure
- cavity
- 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
Landscapes
- Optical Couplings Of Light Guides (AREA)
Abstract
(57)【要約】
【目的】本考案は、構成が簡単で、光導波路に対して水
平、垂直の二方向の位置決めを光ファイバを挿入するだ
けで容易に設定、固定することができる光導波路と光フ
ァイバの接続構造を提供する。
【構成】本考案は、所定の深さだけエッチングにより空
洞化された光導波路に、光ファイバの前記空洞と同じ長
さもしくはやや短い長さであって前記空洞の断面より細
いテーパ部もしくはクラッド部を挿入する光導波路と光
ファイバの接続構造である。
(57) [Abstract] [Purpose] The present invention is an optical waveguide having a simple structure and capable of easily setting and fixing horizontal and vertical positioning with respect to the optical waveguide simply by inserting an optical fiber. And an optical fiber connection structure. According to the present invention, an optical waveguide hollowed to a predetermined depth by etching is provided with a tapered portion or a clad portion having the same length as or slightly shorter than the hollow of the optical fiber and thinner than the cross section of the hollow. It is a connection structure of an optical waveguide and an optical fiber for inserting the optical fiber.
Description
【０００１】[0001]
本考案は、光導波路と光ファイバの接続構造に関する。 The present invention relates to a connection structure between an optical waveguide and an optical fiber.
【０００２】[0002]
従来の光導波路と光ファイバの接続構造としては、図５のようなガイド溝を用 いたものや、図６のようなＶ溝を用いたものがある。これらの例では、光ファイ バの固定には接着剤や抑え板が用いられているが、光導波路と光ファイバの光軸 を一致させることは困難であった。 As a conventional connection structure between an optical waveguide and an optical fiber, there are a structure using a guide groove as shown in FIG. 5 and a structure using a V groove as shown in FIG. In these examples, an adhesive or a press plate was used to fix the optical fiber, but it was difficult to match the optical axes of the optical waveguide and the optical fiber.
【０００３】[0003]
本考案はこれらの問題を解決するために、所定の深さだけエッチングにより空 洞化された光導波路に、この空洞と同じ長さもしくはやや短い長さであって、空 洞断面より細いテーパ部もしくはクラッド部を先端部に有する光ファイバを挿入 する光導波路と光ファイバの接続構造を提案する。 In order to solve these problems, the present invention provides an optical waveguide that has been made a cavity by etching to a predetermined depth, and has a tapered portion that has the same length as or slightly shorter than the cavity and is thinner than the cavity cross section. Alternatively, we propose a connection structure between an optical waveguide and an optical fiber in which an optical fiber having a clad at the tip is inserted.
【０００４】[0004]
以下図面を用いて本考案の実施例を説明する。 図１乃至図４は本考案の実施例を示し、図１は本考案の実施例を示す斜視略図、 図２は図１の上面図、図３は本考案の他の実施例を示す略図であり、図４は本考 案のさらに他の実施例を示す略図であり、各図において同じ部材は同じ符号で示 す。図において、１は光ファイバ、１ａはテーパ状光ファイバ、１ｂは光ファイ バコア、１ｃは光ファイバクラッド、２は光導波路、２ａは光導波路空洞、２ｂ は光導波路コア、３は光導波路基板である。 An embodiment of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of the present invention, FIG. 1 is a schematic perspective view showing an embodiment of the present invention, FIG. 2 is a top view of FIG. 1, and FIG. 3 is a schematic view showing another embodiment of the present invention. FIG. 4 is a schematic diagram showing still another embodiment of the present invention, and the same members are denoted by the same reference numerals in each drawing. In the figure, 1 is an optical fiber, 1a is a tapered optical fiber, 1b is an optical fiber core, 1c is an optical fiber clad, 2 is an optical waveguide, 2a is an optical waveguide cavity, 2b is an optical waveguide core, and 3 is an optical waveguide substrate. is there.
【０００５】 図１の実施例では、光導波路空洞の深さに等しいテーパ状光ファイバを空洞に 挿入する場合を示し、その接続状態を図２に示す。光導波路空洞は、所望のエッ チング断面になるようにマスクをし、所定の深さまでエッチングするとか、ある いはフッ化水素溶液に浸すことによりドープ剤が添加されているコア部をエッチ ングしてもよい。またテーパ状光ファイバは、研磨または溶融延伸などでテーパ 状にし、挿入部は光導波路空洞の内径より小さくする。なお接続部の固定には、 空洞に光導波路の屈折率と等しい接着剤を充填してから光ファイバを挿入しても よいし、挿入後側面に接着剤を塗布して固定してもよい。The embodiment of FIG. 1 shows a case where a tapered optical fiber having the same depth as the optical waveguide cavity is inserted into the cavity, and the connection state thereof is shown in FIG. The optical waveguide cavity is masked so that the desired etching cross section is obtained and etched to a predetermined depth, or the core portion to which the dopant is added is etched by dipping it in a hydrogen fluoride solution. May be. The tapered optical fiber is tapered by polishing or melt drawing, and the insertion portion is smaller than the inner diameter of the optical waveguide cavity. To fix the connecting portion, the cavity may be filled with an adhesive having the same refractive index as that of the optical waveguide and then the optical fiber may be inserted, or the side surface after the insertion may be coated with an adhesive and fixed.
【０００６】 図３は、光ファイバクラッドの外形を光導波路空洞の内径より小さくして空洞 に挿入する実施例であり、フッ化水素溶液に浸すことによりエッチングして作成 する。図４は、光導波路の間隔と同じＶ溝間隔をもつた基板に端面から所定の長 さだけテーパ状光ファイバを出して固定し、コネクタを構成する。これらの接続 はガイドピンを用いるとか、端面で接着剤を用いて接続する。なお光導波路の断 面は方形、円形いずれでもよい。FIG. 3 shows an embodiment in which the outer shape of the optical fiber clad is smaller than the inner diameter of the optical waveguide cavity and is inserted into the cavity. The optical fiber clad is formed by immersion in a hydrogen fluoride solution and etching. In FIG. 4, a tapered optical fiber is taken out from an end surface by a predetermined length and fixed to a substrate having a V-groove spacing that is the same as the spacing of optical waveguides to form a connector. These connections are made using guide pins or adhesive at the end faces. The cross section of the optical waveguide may be square or circular.
【０００７】[0007]
以上説明したように、本考案の光導波路と光ファイバの接続構造によれば、構 成が簡単で、光導波路に対して水平、垂直の二方向の位置決めを光ファイバを挿 入するだけで容易に設定、固定することができる。 As explained above, according to the optical waveguide and optical fiber connection structure of the present invention, the configuration is simple, and horizontal and vertical positioning with respect to the optical waveguide is easy by simply inserting the optical fiber. Can be set and fixed.
【図１】本考案の実施例を示す斜視略図。FIG. 1 is a schematic perspective view showing an embodiment of the present invention.
【図２】図１の上面略図。2 is a schematic top view of FIG.
【図３】本考案の他の実施例を示す略図。FIG. 3 is a schematic view showing another embodiment of the present invention.
【図４】本考案のさらに他の実施例を示す略図。FIG. 4 is a schematic view showing still another embodiment of the present invention.
【図５】従来の実施例を示す略図。FIG. 5 is a schematic view showing a conventional embodiment.
【図６】従来の他の実施例を示す略図。FIG. 6 is a schematic view showing another conventional embodiment.
１ 光ファイバ １ａ テーパ状光ファイバ １ｂ
光ファイバコア １ｃ 光ファイバクラッド ２ 光導波路 ２ａ
光導波路空洞 ２ｂ 光導波路コア ３ 光導波路基板1 optical fiber 1a tapered optical fiber 1b
Optical fiber core 1c Optical fiber clad 2 Optical waveguide 2a
Optical waveguide cavity 2b Optical waveguide core 3 Optical waveguide substrate
Claims (1)
れた光導波路に、光ファイバの前記空洞と同じ長さもし
くはやや短い長さであって前記空洞の断面より細いテー
パ部もしくはクラッド部を挿入することを特徴とする光
導波路と光ファイバの接続構造。1. A tapered portion or a clad portion having the same length as or slightly shorter than the cavity of the optical fiber and thinner than the cross section of the cavity is inserted into an optical waveguide hollowed by etching to a predetermined depth. A structure for connecting an optical waveguide and an optical fiber, which is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1561292U JPH0579505U (en) | 1992-03-25 | 1992-03-25 | Optical waveguide and optical fiber connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1561292U JPH0579505U (en) | 1992-03-25 | 1992-03-25 | Optical waveguide and optical fiber connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0579505U true JPH0579505U (en) | 1993-10-29 |
Family
ID=11893532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1561292U Pending JPH0579505U (en) | 1992-03-25 | 1992-03-25 | Optical waveguide and optical fiber connection structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0579505U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07230019A (en) * | 1994-02-18 | 1995-08-29 | Nec Corp | Optical component and optical coupler |
| JP2006276081A (en) * | 2005-03-28 | 2006-10-12 | Tokyo Univ Of Agriculture & Technology | Connection structure of waveguide and optical branching/coupling element |
| JP2017504059A (en) * | 2013-12-20 | 2017-02-02 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Method and apparatus for coupling an optical waveguide to a single mode fiber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63231407A (en) * | 1987-03-20 | 1988-09-27 | Aihon Kk | Method for connecting optical fiber and optical integrated circuit |
| JPH026911A (en) * | 1988-06-24 | 1990-01-11 | Brother Ind Ltd | Connecting method for optical waveguide |
| JPH0233105A (en) * | 1988-07-22 | 1990-02-02 | Hitachi Cable Ltd | Optical waveguide and manufacture of the same |
-
1992
- 1992-03-25 JP JP1561292U patent/JPH0579505U/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63231407A (en) * | 1987-03-20 | 1988-09-27 | Aihon Kk | Method for connecting optical fiber and optical integrated circuit |
| JPH026911A (en) * | 1988-06-24 | 1990-01-11 | Brother Ind Ltd | Connecting method for optical waveguide |
| JPH0233105A (en) * | 1988-07-22 | 1990-02-02 | Hitachi Cable Ltd | Optical waveguide and manufacture of the same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07230019A (en) * | 1994-02-18 | 1995-08-29 | Nec Corp | Optical component and optical coupler |
| JP2006276081A (en) * | 2005-03-28 | 2006-10-12 | Tokyo Univ Of Agriculture & Technology | Connection structure of waveguide and optical branching/coupling element |
| JP4528970B2 (en) * | 2005-03-28 | 2010-08-25 | 国立大学法人東京農工大学 | Waveguide connection structure and optical branching coupling element |
| JP2017504059A (en) * | 2013-12-20 | 2017-02-02 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Method and apparatus for coupling an optical waveguide to a single mode fiber |
| US10018789B2 (en) | 2013-12-20 | 2018-07-10 | Huawei Technologies Co., Ltd. | Method and apparatus for coupling optical waveguide to single-mode fiber |
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