JP4531957B2 - Method for confirming connection and hardening of optical fiber and optical connector - Google Patents

Method for confirming connection and hardening of optical fiber and optical connector Download PDF

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Publication number
JP4531957B2
JP4531957B2 JP2000273751A JP2000273751A JP4531957B2 JP 4531957 B2 JP4531957 B2 JP 4531957B2 JP 2000273751 A JP2000273751 A JP 2000273751A JP 2000273751 A JP2000273751 A JP 2000273751A JP 4531957 B2 JP4531957 B2 JP 4531957B2
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Japan
Prior art keywords
adhesive
connector
fiber
optical
optical fiber
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JP2000273751A
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JP2002082253A (en
Inventor
貴弘 小川
雅人 椎野
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THE FURUKAW ELECTRIC CO., LTD.
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THE FURUKAW ELECTRIC CO., LTD.
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Description

【0001】
【発明の属する技術分野】
本発明は光コネクタに接続された光ファイバを同コネクタに接着剤で固定し硬化をも確認する方法に関するものである。
【0002】
【従来の技術】
図1に示すように、光ファイバテープ心線1を光コネクタ2に挿入して接続固定する場合は、図2に示すように、光ファイバテープ心線1の先端側の被覆を除去して露出させた裸ファイバ3をブーツ4を介して光コネクタ2に接続し、その後、同コネクタ2の充填口6から接着剤充填空間5内に接着剤(加熱硬化型接着剤や瞬間接着剤等)を充填する。
【0003】
【発明が解決しようとする課題】
前記接続固定おいて良好な光学特性を得るためには、光コネクタの接着剤充填空間内に接着剤を十分に充填し、且つ充填された接着剤を十分に硬化させる必要がある。このため、接続作業においては、接着剤充填空間内に充填される接着剤の量が適切であるか、隙間無く充填されているか、十分に硬化しているか等を目視によって確認している。しかし、従来使用されている接着剤は充填前後や硬化前後で視覚的に特に際立った変化がないため、接着剤の充填状況や硬化状況等を目視によって正確に判断することは困難であり、判断を誤ったために様々な不都合が発生することがある。
【0004】
具体的には、光コネクタの接着剤充填空間内に接着剤が十分に充填されていないにも拘らず、十分に充填されていると判断した結果、光学特性に悪影響が出る場合がある。特に、接着剤充填空間内に残った気泡を見落とすと、環境温度の変化に伴ってその気泡が膨張・収縮を繰り返し、光ファイバに歪みを与えることがある。
【0005】
また、使用する接着剤が例えば二液性の加熱硬化型接着剤の場合には、これを硬化させるためにホットプレートによって加熱を行うが、外気温が低いとホットプレートの温度が上がらずに接着剤の硬化に通常よりも長い時間を要する。しかし、作業者は取扱説明書等に記載されている硬化時間が経過すれば十分に硬化したものと判断してしまうため、特に外気温が低い寒冷地等において、結果的に接着剤の硬化が不十分になってしまうことが考えられる。
【0006】
さらに、図3(a)(b)に示すように、接着剤の充填状況を確認するためのスリット7が先端部に設けられた光コネクタ2の場合、当該スリット7にも必要且つ十分な量の接着剤が充填されている必要がある。しかし、このスリット7は幅が1mm以下と狭く、当該スリット7から接着剤の充填状況を確認することは熟練者であっても困難である。また、この種の光コネクタ2では、接着剤の充填作業に熟練した技術が必要であるため、初心者には充填が難しく、接着剤が外部にこぼれたりして歩留まりが低下する。
【0007】
【課題を解決するための手段】
本発明の目的は、前記諸問題を解決することにある。具体的には、光コネクタの接着剤充填空間内又は/及びスリット内に必要且つ十分な接着剤が充填されているか否か、充填された接着剤が十分に硬化しているか否かを容易且つ確実に確認可能な光ファイバと光コネクタの接続固定硬化確認方法を提供することを目的とする。
【0008】
本件出願の第1の光ファイバと光コネクタの接続固定硬化確認方法は、光ファイバ心線の先端側の被覆が除去されて露出された光ファイバ心線の裸ファイバ部分を、外部開口の接着剤充填口と接着剤充填口に連通する接着剤充填空間と接着剤充填空間の先方に接着剤充填空間に連通して設けられたファイバ挿入孔を備えたコネクタの前記ファイバ挿入孔に挿入する心線挿入工程と、加熱硬化により変色するエポキシ系の加熱硬化型接着剤を前記コネクタの接着剤充填口から充填して前記接着剤充填空間内及び前記裸ファイバ部分が挿入されているファイバ挿入孔内まで充填させる接着剤充填工程と、前記接着剤充填空間内の前記接着剤が変色するまでその接着剤を加熱する加熱工程と、前記接着剤の変色を前記接着剤充填口から目視してその接着剤が硬化しかつ充填したことを確認する目視確認工程とを備えたものである。
【0009】
本件出願の第2の光ファイバと光コネクタの接続固定硬化確認方法は、光ファイバ心線の先端側の被覆が除去されて露出された光ファイバ心線の裸ファイバ部分を、外部開口の接着剤充填口と接着剤充填口に連通する接着剤充填空間と接着剤充填空間の先方に接着剤充填空間に連通して設けられたファイバ挿入孔を備えたコネクタの前記ファイバ挿入孔に挿入する心線挿入工程と、シアノアクリレートを主成分とする瞬間接着剤を前記コネクタの接着剤充填口から充填して前記接着剤充填空間内及び前記裸ファイバ部分が挿入されているファイバ挿入孔内まで充填させる接着剤充填工程と、前記接着剤充填空間内の前記接着剤が白化するまで前記接着剤を放置する放置工程と、前記接着剤充填口から前記充填済み接着剤の白化を目視してその接着剤が硬化しかつ充填したことを確認する目視確認工程とを備えたものである。
【0010】
本件出願の第3の光ファイバと光コネクタの接続固定硬化確認方法は、瞬間接着剤にその白化を阻害しない成分を含む硬化促進剤が添加されているものを使用し、接着剤充填空間内に充填した接着剤中の余分な硬化促進剤をエアーにより飛ばす工程をさらに含む請求項2に記載のものである。
【0011】
本件出願の第4の光ファイバと光コネクタの接続固定硬化確認方法は、被覆が除去されて露出された光ファイバ心線の裸ファイバ部分をコネクタのファイバ挿入孔に挿入する前に、前記裸ファイバ部分の先端面に端面処理を施す工程をさらに含む請求項1ないし請求項3のいずれか1項に記載のものである。
【0012】
本件出願の第5の光ファイバと光コネクタの接続固定硬化確認方法は、心線挿入工程は、裸ファイバの先端面と前記コネクタの先端面が面一になるまで前記裸ファイバをファイバ挿入孔に挿通することを特徴とする請求項1ないし請求項4のいずれか1項に記載のものである。
【0013】
本件出願の第6の光ファイバと光コネクタの接続固定硬化確認方法は、コネクタがMTコネクタであることを特徴とする請求項1ないし請求項5のいずれか1項に記載のものである。
【0014】
本件出願の第7の光ファイバと光コネクタの接続固定硬化確認方法は、接着剤が夜光塗料あるいは蛍光塗料が混入されている接着剤であることを特徴とする請求項1ないし請求項6のいずれか1項に記載のものである。
【0015】
本件出願の第8の光ファイバと光コネクタの接続固定硬化確認方法は、接着剤が硬化前後で変色する接着剤であり、硬化前も硬化後も光コネクタと異系色であることを特徴とする請求項1ないし請求項7のいずれか1項に記載のものである。
【0016】
【発明の実施の形態】
(実施形態1)
以下、本発明の光ファイバと光コネクタの接続固定硬化確認方法の実施形態の一例を説明する。尚、本実施形態における光ファイバは図3(a)(b)に示すような多心の光ファイバテープ心線1であり、光コネクタは同図に示すようなMTコネクタ2であって、先端部にスリット7が形成されているものである。
【0017】
(1)図3(a)(b)に示すように、光ファイバテープ心線1の先端側の被覆を除去して裸ファイバ3を露出させ(口出し)、その裸ファイバ3の先端面に研磨その他の端面処理を施す。
(2)図3(a)(b)に示すように、光ファイバテープ心線1をブーツ4を介してMTコネクタ2に挿入し、同心線1の裸ファイバ3を同コネクタ2のファイバ孔8(図3b)に挿通する。この際、裸ファイバ3の先端面9とMTコネクタ2の先端面10が面一になるまで当該裸ファイバ3をファイバ孔8に挿通する。
(3)図3(b)に示すように、MTコネクタ2の充填口6から同コネクタ2の接着剤充填空間5内に接着剤を充填する。ここで使用する接着剤はエポキシ系の加熱硬化型接着剤であって、硬化前後(加熱前後)で変色するものである。
(4)接着剤が変色するまで、即ち、十分に硬化するまで同接着剤を加熱するか、放置する。
【0018】
(実施形態2)
本発明の光ファイバと光コネクタの接続固定硬化確認方法において使用する接着剤は瞬間接着剤であってもよい。瞬間接着剤の一例には、アルキル 2−シアノアクリレート等のシアノアクリレートを主成分とする瞬間接着剤が挙げられる。瞬間接着剤は光コネクタの接着剤充填空間内に充填されると白化するため、これにより接着剤充填空間内やスリット内に必要且つ十分な量の瞬間接着剤が充填されたか否かを容易且つ確実に確認することができる。尚、瞬間接着剤の硬化を促進するために硬化促進剤を使用する場合は、前記瞬間接着剤の白化を阻害する成分(例えばチオール)が含まれていないものを使用する。これによって、硬化時間を短縮しつつ、接着剤充填空間内やスリット内に必要且つ十分な量の瞬間接着剤が充填されたか否かを容易且つ確実に確認することができる。具体的には、接着剤充填空間内やスリット内に充填された瞬間接着剤に硬化促進剤を添加し、エアーで余分な硬化促進剤を飛ばすと前記白化が起こり、これによって接着剤充填空間内やスリット内に必要且つ十分な量の瞬間接着剤が充填されたか否かを目視によって確実に確認することができる。
【0019】
使用する接着剤が加熱硬化型接着剤であるか、瞬間接着剤であるかを問わず、光コネクタと異系色の接着剤を用いることによって、光コネクタの接着剤充填空間内やスリット内に必要且つ十分な量の接着剤が充填されたか否かを容易且つ確実に確認可能とすることも本発明の範疇に含まれる。また、硬化前後で変色する接着剤を用いる場合、変色後の色は光コネクタと異系色であっても、同系色であってもよいが、望ましくは異系色がよい。
【0020】
夜光塗料や蛍光塗料を混入した接着剤を用いることによって、夜間や暗い場所であっても、光コネクタの接着剤充填空間内やスリット内に必要且つ十分な量の接着剤が充填されたか否かを容易且つ確実に確認可能とすることも本発明の範疇に含まれる。
【0021】
【発明の効果】
本件出願の光ファイバと光コネクタの接続固定硬化確認方法は、硬化前後で変色する接着剤を用いるため、接着剤が硬化したか否かを目視によって容易且つ確実に判断することができる。従って、加熱時間や放置時間を誤ることなく、接着剤を常に十分に硬化させることができ、光コネクタと光ファイバを良好な光学特性が得られるように接続固定することができる。
【0022】
本件出願の光ファイバと光コネクタの接続固定硬化確認方法は、光コネクタと異系色の接着剤を用いるため、光コネクタの接着剤充填空間やスリットに十分な量の接着剤が隙間無く充填されたか否かを容易且つ確実に確認することができる。従って、接着剤の充填が不十分であるために光学特性に悪影響が発生したり、接着剤中に残った気泡の影響で光ファイバに歪みが生じたり、といった不都合が確実に回避され、長期の信頼性が向上する。また、初心者であっても確実に光コネクタの接着剤充填空間やスリットに必要且つ十分な量の接着剤を隙間無く充填可能であるため、作業者の技量によるバラツキがなくなり、品質が安定し、歩留まりも向上する。
【0023】
本件出願の光ファイバと光コネクタの接続固定硬化確認方法は、硬化促進剤を添加すると変色する接着剤を用いるため、硬化時間を短縮しつつ、接着剤が硬化したか否か、必要且つ十分な量の接着剤が隙間無く充填されたか否かを容易且つ確実に確認することができる。従って、接着剤の充填が不十分であるために光学特性に悪影響が発生したり、接着剤中に残った気泡の影響で光ファイバに歪みが生じたり、といった不都合が確実に回避され、長期の信頼性が向上する。また、初心者であっても確実に光コネクタの接着剤充填空間やスリットに十分な量の接着剤を隙間無く充填可能であるため、作業者の技量によるバラツキがなくなり、品質が安定し、歩留まりも向上する。
【0024】
本件出願の光ファイバと光コネクタの接続固定硬化確認方法は、白化防止剤が混入されていない硬化促進剤を用いるので、硬化促進剤を使用しても接着剤が硬化したか否かの指標となる接着剤の白化が阻害されることがない。従って、硬化促進剤を使用して硬化時間の短縮を図りつつ、前記効果を確実に得ることができる。
【図面の簡単な説明】
【図1】 光ファイバと光コネクタの接続固定状態を示す斜視図。
【図2】 光コネクタに光ファイバを挿通した状態の断面図。
【図3】 (a)は先端部にスリットが設けられた光コネクタに光ファイバを挿通した状態の平面図、(b)は同断面図。
【符号の説明】
1 光ファイバ
2 光コネクタ
3 裸ファイバ
4 ブーツ
5 接着剤充填空間
6 充填口
7 スリット
8 ファイバ孔
9 裸ファイバの先端面
10 光コネクタの先端面
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of confirming curing by fixing an optical fiber connected to an optical connector to the connector with an adhesive.
[0002]
[Prior art]
As shown in FIG. 1, when the optical fiber ribbon 1 is inserted into the optical connector 2 to be connected and fixed, as shown in FIG. 2, the coating on the tip side of the optical fiber ribbon 1 is removed and exposed. The bare fiber 3 is connected to the optical connector 2 via the boot 4, and then an adhesive (such as a thermosetting adhesive or an instantaneous adhesive) is put into the adhesive filling space 5 from the filling port 6 of the connector 2. Fill.
[0003]
[Problems to be solved by the invention]
In order to obtain good optical characteristics in the connection and fixing, it is necessary to sufficiently fill the adhesive in the adhesive filling space of the optical connector and to cure the filled adhesive sufficiently. For this reason, in the connection work, it is visually confirmed whether the amount of the adhesive filled in the adhesive filling space is appropriate, filled with no gap, or sufficiently cured. However, since the adhesives used in the past have no noticeable changes visually before and after filling and before and after curing, it is difficult to accurately judge the filling and curing conditions of the adhesive visually. Various inconveniences may occur due to mistakes.
[0004]
Specifically, the optical characteristics may be adversely affected as a result of determining that the adhesive is sufficiently filled although the adhesive is not sufficiently filled in the adhesive filling space of the optical connector. In particular, if an air bubble remaining in the adhesive filling space is overlooked, the air bubble repeatedly expands and contracts in accordance with a change in the environmental temperature, which may distort the optical fiber.
[0005]
In addition, when the adhesive used is, for example, a two-component heat curable adhesive, heating is performed with a hot plate in order to cure the adhesive, but if the outside air temperature is low, the hot plate temperature does not rise and the adhesive is bonded. It takes a longer time than usual to cure the agent. However, since the operator will determine that the curing has been sufficiently performed after the curing time described in the instruction manual has passed, the curing of the adhesive will result in a cold area where the outside air temperature is low. It may be insufficient.
[0006]
Further, as shown in FIGS. 3A and 3B, in the case of the optical connector 2 in which the slit 7 for confirming the state of filling of the adhesive is provided at the tip portion, a necessary and sufficient amount of the slit 7 is also necessary. It is necessary to be filled with adhesive. However, the slit 7 has a width as narrow as 1 mm or less, and it is difficult for an expert to check the state of filling of the adhesive from the slit 7. In addition, since this type of optical connector 2 requires skill in the adhesive filling operation, it is difficult for beginners to fill, and the adhesive spills to the outside and yield decreases.
[0007]
[Means for Solving the Problems]
An object of the present invention is to solve the above problems. Specifically, it is easy to determine whether the necessary and sufficient adhesive is filled in the adhesive filling space or / and the slit of the optical connector, and whether the filled adhesive is sufficiently cured. An object of the present invention is to provide a method for confirming the connection and fixing of an optical fiber and an optical connector that can be reliably confirmed.
[0008]
The first optical fiber and optical connector connection fixing and hardening confirmation method according to the present application is directed to the bare fiber portion of the optical fiber core wire exposed by removing the coating on the front end side of the optical fiber core wire, and the adhesive for the external opening. A core wire to be inserted into the fiber insertion hole of a connector provided with an adhesive filling space communicating with the filling port and the adhesive filling port, and a fiber insertion hole provided in communication with the adhesive filling space ahead of the adhesive filling space An insertion process and an epoxy-based heat-curing adhesive that changes color by heat-curing are filled from the adhesive filling port of the connector and into the adhesive filling space and the fiber insertion hole into which the bare fiber portion is inserted. An adhesive filling step for filling, a heating step for heating the adhesive until the adhesive in the adhesive filling space changes color, and the discoloration of the adhesive is visually observed from the adhesive filling port; Wear agent is that a visual confirmation step of confirming that it has cured and filled.
[0009]
In the second method for confirming the connection and fixing of the optical fiber and the optical connector of the present application, the bare fiber portion of the optical fiber core wire exposed by removing the coating on the tip side of the optical fiber core wire is used as an adhesive for the external opening. A core wire to be inserted into the fiber insertion hole of a connector provided with an adhesive filling space communicating with the filling port and the adhesive filling port, and a fiber insertion hole provided in communication with the adhesive filling space ahead of the adhesive filling space Insertion step and bonding in which an instantaneous adhesive mainly composed of cyanoacrylate is filled from the adhesive filling port of the connector and filled into the adhesive filling space and the fiber insertion hole into which the bare fiber portion is inserted. An adhesive filling step, a leaving step in which the adhesive is left until the adhesive in the adhesive filling space is whitened, and whitening of the filled adhesive is visually observed from the adhesive filling port. Wear agent is that a visual confirmation step of confirming that it has cured and filled.
[0010]
In the third method for confirming the connection and fixing of the optical fiber and the optical connector of the present application, the instantaneous adhesive is added with a curing accelerator containing a component that does not inhibit whitening, and the adhesive filling space is used. It is a thing of Claim 2 which further includes the process of flying off the excess hardening accelerator in the filled adhesive agent with air.
[0011]
According to the fourth method for confirming the connection and fixing of the optical fiber and the optical connector of the present application, the bare fiber portion of the optical fiber core wire exposed by removing the coating is inserted into the fiber insertion hole of the connector. The method according to any one of claims 1 to 3, further comprising a step of performing an end surface treatment on the tip end surface of the portion.
[0012]
In the fifth method for confirming the connection and fixing of the optical fiber and the optical connector according to the present application, the core wire insertion step includes inserting the bare fiber into the fiber insertion hole until the tip surface of the bare fiber is flush with the tip surface of the connector. It is inserted, It is a thing of any one of Claim 1 thru | or 4 characterized by the above-mentioned.
[0013]
The sixth method for confirming connection and hardening of an optical fiber and an optical connector according to the present application is the one according to any one of claims 1 to 5, wherein the connector is an MT connector.
[0014]
7. The method for confirming connection and hardening between an optical fiber and an optical connector according to a seventh aspect of the present application, wherein the adhesive is an adhesive mixed with a luminous paint or a fluorescent paint. Or 1.
[0015]
The eighth optical fiber and optical connector connection fixing and curing confirmation method of the present application is an adhesive in which the adhesive changes color before and after curing, and is different from the optical connector before and after curing. It is a thing of any one of Claim 1 thru | or 7.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment 1)
Hereinafter, an example of the embodiment of the method for confirming the connection and fixing of the optical fiber and the optical connector of the present invention will be described. The optical fiber in the present embodiment is a multi-fiber optical fiber ribbon 1 as shown in FIGS. 3A and 3B, and the optical connector is an MT connector 2 as shown in FIG. A slit 7 is formed in the part.
[0017]
(1) As shown in FIGS. 3 (a) and 3 (b), the coating on the tip side of the optical fiber ribbon 1 is removed to expose the bare fiber 3 (out), and the tip surface of the bare fiber 3 is polished. Other end face processing is performed.
(2) As shown in FIGS. 3A and 3B, the optical fiber ribbon 1 is inserted into the MT connector 2 through the boot 4, and the bare fiber 3 of the coaxial 1 is connected to the fiber hole 8 of the connector 2. (Fig. 3b) is inserted. At this time, the bare fiber 3 is inserted into the fiber hole 8 until the tip surface 9 of the bare fiber 3 and the tip surface 10 of the MT connector 2 are flush with each other.
(3) As shown in FIG. 3B, the adhesive is filled into the adhesive filling space 5 of the connector 2 from the filling port 6 of the MT connector 2. The adhesive used here is an epoxy thermosetting adhesive that changes color before and after curing (before and after heating).
(4) Heat or leave the adhesive until it changes color, i.e. until it is fully cured.
[0018]
(Embodiment 2)
The adhesive used in the method for confirming the connection and fixing of the optical fiber and the optical connector of the present invention may be an instantaneous adhesive. An example of the instantaneous adhesive is an instantaneous adhesive mainly composed of cyanoacrylate such as alkyl 2-cyanoacrylate. Since the instantaneous adhesive is whitened when filled in the adhesive filling space of the optical connector, it is easy to check whether the necessary and sufficient amount of the instantaneous adhesive is filled in the adhesive filling space or the slit. It can be confirmed reliably. In addition, when using a hardening accelerator in order to accelerate | stimulate hardening of an instantaneous adhesive agent, what does not contain the component (for example, thiol) which inhibits the whitening of the said instantaneous adhesive agent is used. Thereby, it is possible to easily and surely confirm whether or not the necessary and sufficient amount of the instantaneous adhesive is filled in the adhesive filling space or the slit while shortening the curing time. Specifically, when the curing accelerator is added to the instantaneous adhesive filled in the adhesive filling space or the slit, and the excess curing accelerator is blown off with air, the whitening occurs, thereby causing the inside of the adhesive filling space. In addition, it can be reliably confirmed visually whether or not a necessary and sufficient amount of the instantaneous adhesive is filled in the slit.
[0019]
Regardless of whether the adhesive used is a thermosetting adhesive or an instantaneous adhesive, by using an adhesive of a different color from that of the optical connector, it can be used in the adhesive filling space or slit of the optical connector. The scope of the present invention also makes it possible to easily and surely check whether or not a necessary and sufficient amount of adhesive has been filled. When an adhesive that changes color before and after curing is used, the color after the color change may be a different color from the optical connector or a similar color, but preferably a different color.
[0020]
Whether or not a sufficient and sufficient amount of adhesive is filled in the adhesive filling space or slit of the optical connector even at night or in a dark place by using an adhesive mixed with luminous paint or fluorescent paint It is also included in the category of the present invention to make it possible to easily and surely confirm.
[0021]
【The invention's effect】
Since the method for confirming the connection and fixing of the optical fiber and the optical connector of the present application uses an adhesive that changes color before and after curing, whether or not the adhesive has been cured can be easily and reliably determined by visual observation. Therefore, the adhesive can always be sufficiently cured without mistakes in the heating time and the standing time, and the optical connector and the optical fiber can be connected and fixed so that good optical characteristics can be obtained.
[0022]
Since the optical fiber and optical connector connection fixing and curing confirmation method of the present application uses an adhesive of a different color from the optical connector, a sufficient amount of adhesive is filled in the adhesive filling space and slit of the optical connector without any gaps. It can be confirmed easily and reliably. Accordingly, inadequate filling of the adhesive can adversely affect the optical characteristics, and the disadvantages such as the distortion of the optical fiber due to the influence of bubbles remaining in the adhesive can be reliably avoided. Reliability is improved. In addition, even a beginner can reliably fill the adhesive filling space and slit of the optical connector with the necessary and sufficient amount of adhesive without any gaps, so there is no variation due to the skill of the operator, the quality is stable, Yield is also improved.
[0023]
The method for confirming the connection and fixing between the optical fiber and the optical connector of the present application uses an adhesive that changes color when a curing accelerator is added. Therefore, it is necessary and sufficient whether the adhesive is cured while shortening the curing time. It can be easily and reliably confirmed whether or not the amount of the adhesive is filled without any gap. Accordingly, inadequate filling of the adhesive can adversely affect the optical characteristics, and the disadvantages such as the distortion of the optical fiber due to the influence of bubbles remaining in the adhesive can be reliably avoided. Reliability is improved. In addition, even beginners can reliably fill the adhesive filling space and slit of the optical connector with a sufficient amount of adhesive without gaps, eliminating variations due to the skill of the operator, stabilizing quality, and yielding. improves.
[0024]
Since the method for confirming the connection and fixing of the optical fiber and the optical connector of the present application uses a curing accelerator that is not mixed with an anti-whitening agent, an index as to whether or not the adhesive is cured even when the curing accelerator is used, and The whitening of the resulting adhesive is not inhibited. Therefore, the effect can be reliably obtained while shortening the curing time by using the curing accelerator.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a connection and fixing state of an optical fiber and an optical connector.
FIG. 2 is a cross-sectional view showing a state where an optical fiber is inserted into the optical connector.
3A is a plan view of a state in which an optical fiber is inserted through an optical connector having a slit at the tip, and FIG. 3B is a cross-sectional view of the same.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Optical fiber 2 Optical connector 3 Bare fiber 4 Boot 5 Adhesive filling space 6 Filling port 7 Slit 8 Fiber hole 9 End face of bare fiber 10 End face of optical connector

Claims (8)

光ファイバ心線の先端側の被覆が除去されて露出された光ファイバ心線の裸ファイバ部分を、外部開口の接着剤充填口と接着剤充填口に連通する接着剤充填空間と接着剤充填空間の先方に接着剤充填空間に連通して設けられたファイバ挿入孔を備えたコネクタの前記ファイバ挿入孔に挿入する心線挿入工程と、
加熱硬化により変色するエポキシ系の加熱硬化型接着剤を前記コネクタの接着剤充填口から充填して前記接着剤充填空間内及び前記裸ファイバ部分が挿入されているファイバ挿入孔内まで充填させる接着剤充填工程と、
前記接着剤充填空間内の前記接着剤が変色するまでその接着剤を加熱する加熱工程と、
前記接着剤の変色を前記接着剤充填口から目視してその接着剤が硬化しかつ充填したことを確認する目視確認工程と、
を備えた光ファイバと光コネクタの接続固定硬化確認方法。
Adhesive filling space and adhesive filling space for communicating the bare fiber portion of the optical fiber core wire exposed by removing the coating on the front end side of the optical fiber core wire to the adhesive filling port of the external opening and the adhesive filling port A core wire insertion step of inserting into the fiber insertion hole of the connector provided with a fiber insertion hole provided in communication with the adhesive filling space at the front of
An epoxy-based heat-curable adhesive that changes color by heat-curing is filled from the adhesive filling port of the connector and filled into the adhesive filling space and the fiber insertion hole into which the bare fiber portion is inserted. Filling process;
A heating step of heating the adhesive until the adhesive in the adhesive filling space changes color;
A visual confirmation step for visually confirming the discoloration of the adhesive from the adhesive filling port and confirming that the adhesive is cured and filled ;
A method for confirming connection and fixing of an optical fiber and an optical connector.
光ファイバ心線の先端側の被覆が除去されて露出された光ファイバ心線の裸ファイバ部分を、外部開口の接着剤充填口と接着剤充填口に連通する接着剤充填空間と接着剤充填空間の先方に接着剤充填空間に連通して設けられたファイバ挿入孔を備えたコネクタの前記ファイバ挿入孔に挿入する心線挿入工程と、
シアノアクリレートを主成分とする瞬間接着剤を前記コネクタの接着剤充填口から充填して前記接着剤充填空間内及び前記裸ファイバ部分が挿入されているファイバ挿入孔内まで充填させる接着剤充填工程と、
前記接着剤充填空間内の前記接着剤が白化するまで前記接着剤を放置する放置工程と、
前記接着剤充填口から前記充填済み接着剤の白化を目視してその接着剤が硬化しかつ充填したことを確認する目視確認工程と、
を備えた光ファイバと光コネクタの接続固定硬化確認方法。
Adhesive filling space and adhesive filling space for communicating the bare fiber portion of the optical fiber core wire exposed by removing the coating on the front end side of the optical fiber core wire to the adhesive filling port of the external opening and the adhesive filling port A core wire insertion step of inserting into the fiber insertion hole of the connector provided with a fiber insertion hole provided in communication with the adhesive filling space at the front of
An adhesive filling step of filling an instantaneous adhesive mainly composed of cyanoacrylate from the adhesive filling port of the connector and filling the adhesive filling space and the fiber insertion hole into which the bare fiber portion is inserted; ,
Leaving the adhesive until the adhesive in the adhesive filling space is whitened;
A visual confirmation step of visually confirming the whitening of the filled adhesive from the adhesive filling port and confirming that the adhesive is cured and filled;
A method for confirming connection and fixing of an optical fiber and an optical connector.
瞬間接着剤にその白化を阻害しない成分を含む硬化促進剤が添加されているものを使用し、接着剤充填空間内に充填した接着剤中の余分な硬化促進剤をエアーにより飛ばす工程をさらに含む請求項2に記載の光ファイバと光コネクタの接続固定硬化確認方法。  The method further includes the step of using an instant adhesive to which a curing accelerator containing a component that does not inhibit whitening is added, and blowing off excess curing accelerator in the adhesive filled in the adhesive filling space with air. A method for confirming connection and fixing of an optical fiber according to claim 2 and an optical connector. 被覆が除去されて露出された光ファイバ心線の裸ファイバ部分をコネクタのファイバ挿入孔に挿入する前に、前記裸ファイバ部分の先端面に端面処理を施す工程をさらに含む請求項1ないし請求項3のいずれか1項に記載の光ファイバと光コネクタの接続固定硬化確認方法。  2. The method according to claim 1, further comprising a step of subjecting the end face of the bare fiber portion to an end face treatment before inserting the bare fiber portion of the optical fiber core wire, which is exposed after the coating is removed, into the fiber insertion hole of the connector. 4. The method for confirming the connection and fixing of the optical fiber and the optical connector according to any one of 3 above. 心線挿入工程は、裸ファイバの先端面と前記コネクタの先端面が面一になるまで前記裸ファイバをファイバ挿入孔に挿通することを特徴とする請求項1ないし請求項4のいずれか1項に記載の光ファイバと光コネクタの接続固定硬化確認方法。5. The core wire insertion step includes inserting the bare fiber into the fiber insertion hole until the tip end surface of the bare fiber and the tip end surface of the connector are flush with each other. The connection fixation hardening confirmation method of the optical fiber and optical connector of description. コネクタがMTコネクタであることを特徴とする請求項1ないし請求項5のいずれか1項に記載の光ファイバと光コネクタの接続固定硬化確認方法。  The method for confirming the connection and fixing of an optical fiber and an optical connector according to any one of claims 1 to 5, wherein the connector is an MT connector. 接着剤が夜光塗料あるいは蛍光塗料が混入されている接着剤であることを特徴とする請求項1ないし請求項6のいずれか1項に記載の光ファイバと光コネクタの接続固定硬化確認方法。  The method for confirming the connection and fixing of an optical fiber and an optical connector according to any one of claims 1 to 6, wherein the adhesive is an adhesive mixed with a luminescent paint or a fluorescent paint. 接着剤が硬化前後で変色する接着剤であり、硬化前も硬化後も光コネクタと異系色であることを特徴とする請求項1ないし請求項7のいずれか1項に記載の光ファイバと光コネクタの接続固定硬化確認方法。  The optical fiber according to any one of claims 1 to 7, wherein the adhesive is an adhesive that changes color before and after curing, and is different in color from the optical connector before and after curing. A method for checking the connection and fixing of optical connectors.
JP2000273751A 2000-09-08 2000-09-08 Method for confirming connection and hardening of optical fiber and optical connector Expired - Fee Related JP4531957B2 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4860740A (en) * 1971-11-26 1973-08-25
JPH0224380A (en) * 1988-05-17 1990-01-26 Alcan Internatl Ltd Adhesive composition and adhesion method
JPH0651158A (en) * 1992-08-03 1994-02-25 Nippon Telegr & Teleph Corp <Ntt> Method for curing adhesive for optical connector
JPH11316319A (en) * 1998-03-05 1999-11-16 Sumitomo Electric Ind Ltd Optical fiber attaching method
WO2000022060A1 (en) * 1998-10-09 2000-04-20 Minnesota Mining And Manufacturing Company Optical fiber connector using colored photocurable adhesive

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2734710B2 (en) * 1990-01-10 1998-04-02 東亞合成株式会社 Curing accelerator for cyanoacrylate
JPH10279904A (en) * 1997-04-08 1998-10-20 Matsushita Electric Ind Co Ltd Bond for adhering electronic part and method for adhering electronic part

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4860740A (en) * 1971-11-26 1973-08-25
JPH0224380A (en) * 1988-05-17 1990-01-26 Alcan Internatl Ltd Adhesive composition and adhesion method
JPH0651158A (en) * 1992-08-03 1994-02-25 Nippon Telegr & Teleph Corp <Ntt> Method for curing adhesive for optical connector
JPH11316319A (en) * 1998-03-05 1999-11-16 Sumitomo Electric Ind Ltd Optical fiber attaching method
WO2000022060A1 (en) * 1998-10-09 2000-04-20 Minnesota Mining And Manufacturing Company Optical fiber connector using colored photocurable adhesive

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