JP3505376B2 - Optical fiber fixing method and fixing jig used for the fixing method - Google Patents
Optical fiber fixing method and fixing jig used for the fixing methodInfo
- Publication number
- JP3505376B2 JP3505376B2 JP34046597A JP34046597A JP3505376B2 JP 3505376 B2 JP3505376 B2 JP 3505376B2 JP 34046597 A JP34046597 A JP 34046597A JP 34046597 A JP34046597 A JP 34046597A JP 3505376 B2 JP3505376 B2 JP 3505376B2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- fixing
- package
- fixed
- 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.)
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Description
【０００１】[0001]
【発明の属する技術分野】本発明は、光学的接続が行わ
れる光ファイバの固定方法および該固定方法に用いる固
定用治具に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for fixing an optical fiber that is optically connected and a fixing jig used in the method.
【０００２】[0002]
【従来の技術】光ファイバ同士あるいは光ファイバと光
部品（例えば、光導波路、発光素子および受光素子）を
光学的に接続する目的で、光ファイバをパッケージなど
の固定部材へ固定する固定構造には、固定強度（１〜２
ｋｇ重以上の引っ張り強度）、低接続損失及び環境特性
（温度および湿度の変化に対する接続損失の変動が小さ
いこと）が要求される。2. Description of the Related Art A fixing structure for fixing an optical fiber to a fixing member such as a package for the purpose of optically connecting optical fibers to each other or an optical component (for example, an optical waveguide, a light emitting element and a light receiving element) is provided. , Fixed strength (1-2
tensile strength of not less than kg), low splice loss and environmental characteristics (small change in splice loss with changes in temperature and humidity).
【０００３】光ファイバのパッケージへの固定構造とし
ては、例えば図３に示すものが知られている。この固定
構造は、パッケージ１内で光ファイバ３、３同士を光学
的に接続したものである。パッケージ１は中央に光ファ
イバ３を整列配置するＶ溝を有するＶ溝基板２を備えて
いる。また、パッケージ１の両端には、光ファイバ３を
固定するテラス状の引き止め部１ａが設けられている。
光ファイバ３は被覆が除去された先端部３ａがＶ溝に挿
入され、上方からガラスカバー５で押さえつけられ、接
着剤４で固定されている。また、光ファイバ３は後方の
被覆部３ｂで引き止め部１ａに接着剤９で固定されてい
る。この光ファイバ３の固定構造では、光ファイバ３は
Ｖ溝基板２と引き止め部１ａの２か所で固定されてい
る。Ｖ溝基板２では、光ファイバ３の低接続損失及び環
境特性が確保される。また、引き止め部１ａでは、パッ
ケージ１への光ファイバ３の固定強度が確保される。As a structure for fixing an optical fiber to a package, for example, one shown in FIG. 3 is known. The fixing structure is an optical connection between the optical fibers 3 and 3 in the package 1. The package 1 includes a V-groove substrate 2 having a V-groove for aligning the optical fibers 3 in the center. In addition, terrace-shaped retaining portions 1 a for fixing the optical fiber 3 are provided at both ends of the package 1.
In the optical fiber 3, the tip portion 3a with the coating removed is inserted into the V groove, pressed down from above by the glass cover 5, and fixed by the adhesive 4. The optical fiber 3 is fixed to the retaining portion 1a with an adhesive 9 at the rear covering portion 3b. In this fixing structure for the optical fiber 3, the optical fiber 3 is fixed at two points, that is, the V-groove substrate 2 and the retaining portion 1a. The V-groove substrate 2 ensures low connection loss and environmental characteristics of the optical fiber 3. Further, the holding portion 1a ensures the fixing strength of the optical fiber 3 to the package 1.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上述の
光ファイバ３のパッケージ１への固定構造には、次のよ
うな問題があった。即ち、パッケージ１の膨張率が光フ
ァイバ３のそれよりも大きい場合には、温度が上昇する
と、光ファイバ３の２ヶ所の固定部間、即ち、Ｖ溝基板
２と引き止め部１ａ間の光ファイバ３に張力が加わり、
光ファイバ３の接続対象との相対位置が狂ったり、光フ
ァイバ３の断線が生じたりする。従来は、膨張率がガラ
スよりも小さな金属を削り出してパッケージを製作し、
この問題を防止していたが、パッケージは高価なもので
あった。最近になり安価なプラスチックをパッケージ材
料に用いるようになったが、プラスチックは膨張率がガ
ラスに比べて非常に大きいため、上記の問題が発生す
る。本発明は、上述した問題に鑑み、ガラスよりも大き
な膨張率を有する材料からなる固定部材に、光学的接続
が行われる光ファイバを固定する方法および該固定方法
に用いる固定用治具を提供することを目的とする。However, the above-mentioned structure for fixing the optical fiber 3 to the package 1 has the following problems. That is, when the expansion coefficient of the package 1 is larger than that of the optical fiber 3, when the temperature rises, the optical fiber between the two fixing portions of the optical fiber 3, that is, between the V-groove substrate 2 and the retaining portion 1a. Tension is added to 3,
The relative position of the optical fiber 3 with respect to the connection target may change, or the optical fiber 3 may be broken. Conventionally, a metal having a smaller expansion coefficient than glass is cut out to make a package,
This prevented this problem, but the package was expensive. Recently, inexpensive plastic has come to be used as a packaging material. However, since the expansion coefficient of plastic is much larger than that of glass, the above problem occurs. In view of the above problems, the present invention provides a method for fixing an optical fiber to be optically connected to a fixing member made of a material having a larger expansion coefficient than glass, and a fixing jig used for the fixing method. The purpose is to
【０００５】[0005]
【課題を解決するための手段】本発明は上記問題点を解
決すべくなされたもので、請求項１記載の発明は、光フ
ァイバの光学的接続を行う先端部と、その後方部の二ヶ
所で光ファイバを前記光ファイバよりも膨張率の大きな
固定部材に固定する光ファイバの固定方法であって、先
ず、光ファイバの前記先端部を固定し、その後、光ファ
イバに光軸方向の張力を加えた状態で、かつ前記固定部
材を前記固定部材を使用する環境の最高温度以上の温度
に加熱した状態で光ファイバの前記後方部を固定するこ
とを特徴とするものである。 SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 has two points, that is, a front end portion for optically connecting optical fibers and a rear portion thereof. An optical fiber fixing method for fixing an optical fiber to a fixing member having a larger expansion coefficient than that of the optical fiber by first fixing the tip portion of the optical fiber, and then fixing the optical axis to the optical fiber. The optical fiber is characterized in that the rear portion of the optical fiber is fixed in a state in which directional tension is applied and the fixing member is heated to a temperature higher than the maximum temperature of the environment in which the fixing member is used .
【０００６】また、請求項２記載の発明は、先端部が前
記固定部材に固定された光ファイバを仮止めする光ファ
イバ固定部をバネにより引っ張り、前記光ファイバに光
軸方向の張力を加える光ファイバ引っ張り手段を有する
ことを特徴とする請求項１記載の光ファイバの固定方法
に用いる固定用治具である。According to a second aspect of the invention, the optical fiber fixing portion for temporarily fixing the optical fiber whose tip is fixed to the fixing member is pulled by a spring to apply tension to the optical fiber in the optical axis direction. The fixing jig used in the method of fixing an optical fiber according to claim 1, further comprising a fiber pulling means.
【０００７】 請求項１記載の発明によれば、まず光
ファイバ先端部を光学的接続を行うように位置決めし
て、固定手段（例えば接着剤・半田・溶接など）によっ
て固定部材（例えばパッケージ）に固定する。次に光フ
ァイバに光軸方向の張力を加えた状態で、かつ前記固定
部材を前記固定部材を使用する環境の最高温度以上の温
度まで加熱しておいて、光ファイバの後方を固定部材に
例えば熱硬化型接着剤を用いて固定する。従って、固定
部材の材質の膨張率が光ファイバのそれよりも大きい場
合（例えばプラスチック）には、光ファイバの固定作業
時よりも低い温度である室温では、二ヶ所の固定部間の
光ファイバが弛みを持ち、使用温度が高温になり固定部
材が膨張しても、その温度は光ファイバの固定作業時の
温度よりも低いので、光ファイバに過大な張力が加わる
ことがなく、光ファイバは断線することがなくなる。ま
た、請求項２記載の固定用治具を用いると、光ファイバ
に光軸方向の張力を加えた状態で、光ファイバの被覆部
を固定部材に固定することができる。According to the first aspect of the invention, first, the tip end portion of the optical fiber is positioned so as to make an optical connection, and is fixed to a fixing member (for example, a package) by a fixing means (for example, adhesive, solder, welding, etc.). Fix it. Next, in a state tensioned in the optical axis direction to the optical fiber, and heated in advance to the fixed member to a maximum temperature above the temperature <br/> of the environment using the fixing member, the optical fiber rearward Is fixed to the fixing member using, for example, a thermosetting adhesive. Therefore, when the expansion coefficient of the material of the fixing member is larger than that of the optical fiber (for example, plastic), the optical fiber between the two fixing portions will be separated at room temperature, which is a lower temperature than the fixing operation of the optical fiber. Even if the fixing member expands due to slackness and the operating temperature becomes high, the temperature is lower than the fixing temperature of the optical fiber, so excessive tension is not applied to the optical fiber and the optical fiber is disconnected. There is nothing to do. Further, by using the fixing jig according to the second aspect, it is possible to fix the covering portion of the optical fiber to the fixing member in a state where tension is applied to the optical fiber in the optical axis direction.
【０００８】[0008]
【発明の実施の形態】以下、図面に基づいて本発明の実
施の形態を詳細に説明する。
（実施形態１）図１は、本発明にかかる光ファイバの固
定方法の一実施形態の説明図である。本実施形態は、プ
ラスチック製のパッケージ１内に２本の光ファイバ３を
対向するように固定し、光ファイバ３、３同士が光学的
に接続するようにしたものである。光ファイバ３をパッ
ケージ１内に固定する工程は以下の通りである。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. (Embodiment 1) FIG. 1 is an explanatory view of an embodiment of a method for fixing an optical fiber according to the present invention. In this embodiment, two optical fibers 3 are fixed in a plastic package 1 so as to face each other, and the optical fibers 3 and 3 are optically connected to each other. The process of fixing the optical fiber 3 in the package 1 is as follows.
【０００９】即ち、
１）まず、ポリフェニレンサルファイド（ＰＰＳ）で成
形されたパッケージ１の中央部に、光ファイバ整列配置
用のＶ溝を持つ厚さ１ｍｍのシリコン製Ｖ溝基板２を接
着剤で固定する。Ｖ溝は開口角６０°、深さ１２０μm
である。Ｖ溝の長さは４ｍｍとした。この時の接着剤層
の厚さは約５μｍである。なお、パッケージ１の両端に
は光ファイバ３を張力を加えた状態で引き止め、固定す
る引き止め部１ａが設けられている。引き止め部１ａ
は、パッケージ１中央部よりも高いテラス状になってお
り、光ファイバ３がＶ溝基板２と引き止め部１ａで固定
された状態で、光ファイバ３はパッケージ１面に平行に
なる。1) First, a 1 mm thick silicon V-groove substrate 2 having V-grooves for aligning optical fibers is fixed to the central portion of a package 1 made of polyphenylene sulfide (PPS) with an adhesive. To do. V groove has an opening angle of 60 ° and a depth of 120 μm
Is. The length of the V groove was 4 mm. At this time, the thickness of the adhesive layer is about 5 μm. It should be noted that both ends of the package 1 are provided with retaining portions 1a for retaining and fixing the optical fiber 3 under tension. Retaining part 1a
Has a terrace shape higher than the central portion of the package 1, and the optical fiber 3 is parallel to the surface of the package 1 in a state where the optical fiber 3 is fixed to the V-groove substrate 2 and the retaining portion 1a.
【００１０】２）次いで、被覆を除去した光ファイバ先
端部３ａをパッケージ１の両側からＶ溝基板２のＶ溝に
挿入し、Ｖ溝基板２中央で光ファイバ先端部３ａ、３ａ
同士を約５μｍの間隔になるよう位置決めする。その
後、Ｖ溝上に紫外線硬化接着剤４を滴らし、上からガラ
スカバー５で押さえたまま、紫外線を照射し、光ファイ
バ先端部３ａを固定する。2) Next, the optical fiber tip 3a with the coating removed is inserted into the V groove of the V groove substrate 2 from both sides of the package 1, and the optical fiber tips 3a, 3a are formed at the center of the V groove substrate 2.
The two are positioned so that the distance between them is about 5 μm. After that, the ultraviolet curable adhesive 4 is dropped on the V groove, and while being pressed by the glass cover 5 from above, ultraviolet rays are irradiated to fix the optical fiber tip portion 3a.
【００１１】３）次いで、光ファイバ先端部３ａを固定
したパッケージ１を、固定用治具３０の中央のパッケー
ジ固定部３０ａにパッケージ押さえ３１で上部から圧力
をかけて機械的に固定する。固定用治具３０は両側に光
ファイバ固定部３２を有する。この光ファイバ固定部３
２は光ファイバ３の光軸方向（図１において左右方向）
に移動自在になっており、一端が固定用治具３０の端部
に固定されたバネ３４を取り付けることにより、固定用
治具３０の端部方向に引っ張ることができる。3) Next, the package 1 to which the optical fiber tip portion 3a is fixed is mechanically fixed to the central package fixing portion 30a of the fixing jig 30 by applying pressure from above with the package holder 31. The fixing jig 30 has optical fiber fixing portions 32 on both sides. This optical fiber fixing part 3
2 is the optical axis direction of the optical fiber 3 (left and right direction in FIG. 1)
By attaching a spring 34 whose one end is fixed to the end of the fixing jig 30, it can be pulled toward the end of the fixing jig 30.
【００１２】４）次いで、光ファイバ先端部３ａがＶ溝
に固定された光ファイバ３の被覆部３ｂを、固定用治具
３０の光ファイバ固定部３２に耐熱テープ３３を用いて
仮固定する。そして、バネ３４を光ファイバ固定部３２
に取り付け、光ファイバ固定部３２を介して光ファイバ
３を約０．２Ｋｇｆの引っ張り張力で光軸方向に引っ張
る。この状態でパッケージ１の引き止め部１ａに熱硬化
接着剤９を滴下し、そのまま加熱炉（図示せず）内で約
９０℃に加熱し接着剤を硬化させる。この加熱温度は、
光ファイバ３を固定したパッケージ１を使用する環境の
最高温度よりも高い温度になっている。4) Next, the covering portion 3b of the optical fiber 3 whose optical fiber tip portion 3a is fixed in the V groove is temporarily fixed to the optical fiber fixing portion 32 of the fixing jig 30 by using the heat resistant tape 33. Then, the spring 34 is attached to the optical fiber fixing portion 32.
, And the optical fiber 3 is pulled in the optical axis direction through the optical fiber fixing portion 32 with a tensile tension of about 0.2 Kgf. In this state, the thermosetting adhesive 9 is dropped on the retaining portion 1a of the package 1 and heated as it is to about 90 ° C. in a heating furnace (not shown) to cure the adhesive. This heating temperature is
The temperature is higher than the maximum temperature of the environment in which the package 1 with the optical fiber 3 fixed is used.
【００１３】上述のようにして光ファイバ３を固定した
パッケージ１は図３に示すような構造になる。図３にお
いて、Ｖ溝基板２と引き止め部１ａの間隔Ｌを５ｍｍと
して、その間の光ファイバ３には室温で約８μｍの弛み
が生じた。このパッケージ１を９０℃近くまで加熱して
膨張させても、光ファイバ３はＶ溝基板２と引き止め部
１ａの間で断線することはなかった。また、パッケージ
１に固定された光ファイバ３を約２Ｋｇ重の力で引っ張
ってみたが、損失変動は０．０２ｄＢ以下の良好な値で
あった。The package 1 to which the optical fiber 3 is fixed as described above has a structure as shown in FIG. In FIG. 3, the distance L between the V-groove substrate 2 and the retaining portion 1a was set to 5 mm, and the optical fiber 3 between them had a slack of about 8 μm at room temperature. Even if the package 1 was heated to about 90 ° C. and expanded, the optical fiber 3 was not broken between the V-groove substrate 2 and the retaining portion 1a. Further, when the optical fiber 3 fixed to the package 1 was pulled by a force of about 2 kg, the loss variation was a good value of 0.02 dB or less.
【００１４】（実施形態２）本実施形態は、図２に示す
ように、プラスチック製のパッケージ１１内に設けられ
たＶ溝付き導波路チップ１２の導波路２２と光ファイバ
３を光学的に接続したものである。パッケージ１１は、
液晶ポリマー（流動方向線膨張率０．６×１０-5(1/
℃）) を用いて、インサートモールドによりリードピン
１０（４２アロイ製）を埋め込んだ成形体である。この
パッケージ１１には、Ｖ溝付き導波路チップ１２が熱硬
化樹脂を間に挟んで１５０℃で加熱、固定されている。(Embodiment 2) In this embodiment, as shown in FIG. 2, a waveguide 22 of a waveguide chip 12 with a V groove provided in a plastic package 11 and an optical fiber 3 are optically connected. It was done. Package 11 is
Liquid crystal polymer (Linear expansion coefficient 0.6 × 10 -5 (1 /
(° C.)), and the lead pin 10 (made of 42 alloy) is embedded by insert molding. In this package 11, a V-groove waveguide chip 12 is heated and fixed at 150 ° C. with a thermosetting resin interposed therebetween.
【００１５】光ファイバ３は上記パッケージ１１に以下
のようにして固定される。即ち、
１）まず光ファイバ３を引き止め部材１３に貫通させ、
熱硬化型接着剤１６で接着、固定する。そして、光ファ
イバ３の先端部３ａを導波路チップ１２のＶ溝２１上に
配置し、導波路２２端面との間隔を５μｍにして、紫外
線硬化型接着剤１５で固定する。
２）次いで、光ファイバ３を約１００ｇ重で光軸方向に
引っ張りながら、引き止め部材１３とパッケージ１１間
に熱硬化型接着剤１６を塗布し、その状態のままパッケ
ージ１１全体を加熱炉内で９０℃まで加熱し、熱硬化型
接着剤１６を硬化させる。上述のようにして光ファイバ
３を固定したパッケージ１１では、Ｖ溝２１と引き止め
部材１３の間隔を１０ｍｍとして、その間の光ファイバ
３に室温で約５μｍの弛みが生じた。また、パッケージ
１１に固定させた光ファイバ３を約２Ｋｇ重で引っ張っ
てみたが、損失変動は０．０２ｄＢ以下であった。The optical fiber 3 is fixed to the package 11 as follows. That is, 1) First, the optical fiber 3 is passed through the retaining member 13,
The thermosetting adhesive 16 is used for adhesion and fixing. Then, the tip portion 3a of the optical fiber 3 is arranged on the V groove 21 of the waveguide chip 12, and the distance from the end face of the waveguide 22 is set to 5 μm and fixed with the ultraviolet curable adhesive 15. 2) Next, while pulling the optical fiber 3 with a weight of about 100 g in the optical axis direction, a thermosetting adhesive 16 is applied between the retaining member 13 and the package 11, and the entire package 11 is kept in that state in a heating furnace for 90 minutes. The thermosetting adhesive 16 is cured by heating to ℃. In the package 11 in which the optical fiber 3 is fixed as described above, the distance between the V groove 21 and the retaining member 13 is set to 10 mm, and the optical fiber 3 in between has a slack of about 5 μm at room temperature. Further, when the optical fiber 3 fixed to the package 11 was pulled with a weight of about 2 kg, the loss variation was 0.02 dB or less.
【００１６】なお、図２に示したパッケージ１１への光
ファイバ３の固定方法は上記実施形態に限らず、以下の
方法でもよい。即ち、光ファイバ３を引き止め部材１３
に差し込んだ状態で（固定はせず）、光ファイバ先端部
３ａをＶ溝２１に固定する。次に光ファイバ３を約１０
０ｇ重で光軸方向に引っ張りながら、光ファイバ３と引
き止め部材１３を固定するために、引き止め部材１３内
部、及び引き止め部材１３とパッケージ１１間に熱硬化
型接着剤１６を塗布し、その状態のままパッケージ１１
全体を加熱炉内で９０℃まで加熱し、熱硬化型接着剤１
６を硬化させてもよい。また、導波路チップ１２の固
定、光ファイバ先端部３ａの固定には、半田やレーザー
溶接を用いても構わない。The method of fixing the optical fiber 3 to the package 11 shown in FIG. 2 is not limited to the above embodiment, and the following method may be used. That is, the optical fiber 3 is retained by the retaining member 13
The optical fiber tip portion 3a is fixed to the V groove 21 in a state of being inserted into (not fixed). Next, the optical fiber 3
In order to fix the optical fiber 3 and the detent member 13 while pulling in the optical axis direction with 0 g weight, the thermosetting adhesive 16 is applied inside the detent member 13 and between the detent member 13 and the package 11, and Package 11 as it is
The whole is heated to 90 ° C in a heating furnace, and thermosetting adhesive 1
6 may be cured. Further, soldering or laser welding may be used to fix the waveguide chip 12 and the optical fiber tip 3a.
【００１７】[0017]
【発明の効果】以上説明したように本発明によれば、固
定部材の温度上昇により、固定部材に固定された光ファ
イバが断線するのを防止することができるという優れた
効果がある。As described above, according to the present invention, it is possible to prevent the optical fiber fixed to the fixing member from being broken due to the temperature rise of the fixing member.
【図１】本発明に係る光ファイバの固定方法の一実施形
態の説明図である。FIG. 1 is an explanatory diagram of an embodiment of an optical fiber fixing method according to the present invention.
【図２】他の実施形態の説明図である。FIG. 2 is an explanatory diagram of another embodiment.
【図３】光ファイバをパッケージに固定した状態の説明
図である。FIG. 3 is an explanatory diagram showing a state in which an optical fiber is fixed to a package.
１、１１ パッケージ １ａ 引き止め部 ２ Ｖ溝基板 ３ 光ファイバ ３ａ 先端部 ３ｂ 被覆部 ４、９、１５、１６ 接着剤 ５ ガラスカバー １０ リードピン １２ 導波路チップ １３ 引き止め部材 ２１ Ｖ溝 ２２ 導波路 ３０ 固定用治具 ３０ａ パッケージ固定部 ３１ パッケージ押さえ ３２ 光ファイバ固定部 ３３ 耐熱テープ ３４ バネ 1,11 package 1a Retaining part 2 V groove substrate 3 optical fiber 3a tip 3b Cover part 4, 9, 15, 16 adhesive 5 glass cover 10 lead pin 12 Waveguide chip 13 Detent member 21 V groove 22 Waveguide 30 Fixing jig 30a Package fixing part 31 Package holder 32 Optical fiber fixing part 33 Heat-resistant tape 34 Spring
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭58−220114（ＪＰ，Ａ) 特開 昭62−50710（ＪＰ，Ａ) 特開 昭62−36609（ＪＰ，Ａ) 特開 平８−152539（ＪＰ，Ａ) 実開 昭60−23811（ＪＰ，Ｕ) 実開 昭63−199204（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G02B 6/00 G02B 6/24 G02B 6/26 G02B 6/30 - 6/42 ─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-58-220114 (JP, A) JP-A-62-50710 (JP, A) JP-A-62-36609 (JP, A) JP-A-8- 152539 (JP, A) Actual development Sho 60-23811 (JP, U) Actual development Sho 63-199204 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) G02B 6/00 G02B 6 / 24 G02B 6/26 G02B 6/30-6/42
Claims (2)
と、その後方部の二ヶ所で光ファイバを前記光ファイバ
よりも膨張率の大きな固定部材に固定する光ファイバの
固定方法であって、 先ず、光ファイバの前記先端部を固定し、その後、光フ
ァイバに光軸方向の張力を加えた状態で、かつ前記固定
部材を前記固定部材を使用する環境の最高温度以上の温
度に加熱した状態で光ファイバの前記後方部を固定する
ことを特徴とする光ファイバの固定方法。1. A and a distal end for performing optical connection of an optical fiber, the optical fiber of the optical fiber in two places of the rear portion
A method of fixing an optical fiber, which is fixed to a fixing member having a larger expansion coefficient, wherein first, the tip portion of the optical fiber is fixed, and then the optical fiber is applied with tension in the optical axis direction, and A method for fixing an optical fiber, characterized in that the rear portion of the optical fiber is fixed in a state where the fixing member is heated to a temperature equal to or higher than the maximum temperature of the environment in which the fixing member is used .
ァイバを仮止めする光ファイバ固定部をバネにより引っ
張り、前記光ファイバに光軸方向の張力を加える光ファ
イバ引っ張り手段を有することを特徴とする請求項１記
載の光ファイバの固定方法に用いる固定用治具。2. An optical fiber pulling means for pulling the optical fiber fixing portion for temporarily fixing the optical fiber fixed to the fixing member by a spring to apply a tension in the optical axis direction to the optical fiber. A fixing jig used in the method for fixing an optical fiber according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34046597A JP3505376B2 (en) | 1997-12-11 | 1997-12-11 | Optical fiber fixing method and fixing jig used for the fixing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34046597A JP3505376B2 (en) | 1997-12-11 | 1997-12-11 | Optical fiber fixing method and fixing jig used for the fixing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11174261A JPH11174261A (en) | 1999-07-02 |
| JP3505376B2 true JP3505376B2 (en) | 2004-03-08 |
Family
ID=18337231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34046597A Expired - Lifetime JP3505376B2 (en) | 1997-12-11 | 1997-12-11 | Optical fiber fixing method and fixing jig used for the fixing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3505376B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002333541A (en) * | 2001-05-08 | 2002-11-22 | Furukawa Electric Co Ltd:The | Optical module |
| JP4563107B2 (en) * | 2004-08-09 | 2010-10-13 | 住友大阪セメント株式会社 | Light modulation element module |
| JP5810153B2 (en) * | 2011-04-13 | 2015-11-11 | 株式会社フジクラ | Manufacturing method of optical module |
| JP5691808B2 (en) | 2011-04-28 | 2015-04-01 | 住友大阪セメント株式会社 | Optical waveguide device |
-
1997
- 1997-12-11 JP JP34046597A patent/JP3505376B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11174261A (en) | 1999-07-02 |
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