JP3261786B2 - Adhesive for optical connector and optical connector - Google Patents
Adhesive for optical connector and optical connectorInfo
- Publication number
- JP3261786B2 JP3261786B2 JP03618793A JP3618793A JP3261786B2 JP 3261786 B2 JP3261786 B2 JP 3261786B2 JP 03618793 A JP03618793 A JP 03618793A JP 3618793 A JP3618793 A JP 3618793A JP 3261786 B2 JP3261786 B2 JP 3261786B2
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- optical connector
- less
- ferrule
- linear expansion
- 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.)
- Expired - Fee Related
Links
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
- Adhesives Or Adhesive Processes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、光通信における光コネ
クタのフェルールに光ファイバを固定するための接着剤
およびそれを用いて光ファイバを固定した光コネクタに
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive for fixing an optical fiber to a ferrule of an optical connector in optical communication, and an optical connector using the adhesive to fix an optical fiber.
【０００２】[0002]
【従来の技術】従来、光コネクタ、特に多心光コネクタ
のフェルールには、図１に示されるような形態のものが
一般的に用いられ、このような形に成形された光ファイ
バフェルール１に光ファイバ孔（挿入口）４より光ファ
イバを挿入した後、接着剤注入用開口部２より熱硬化性
エポキシ系接着剤を注入し、８０℃程度の高温で接着剤
を硬化させ、光ファイバをフェルール１に固定し、端面
を研磨して光コネクタを作製する。2. Description of the Related Art Conventionally, as a ferrule of an optical connector, particularly a multi-core optical connector, a ferrule having a form as shown in FIG. 1 is generally used, and an optical fiber ferrule 1 formed in such a shape is generally used. After inserting the optical fiber through the optical fiber hole (insertion port) 4, a thermosetting epoxy adhesive is injected through the adhesive injection opening 2, and the adhesive is cured at a high temperature of about 80 ° C. An optical connector is manufactured by fixing to the ferrule 1 and polishing the end face.
【０００３】使用される接着剤は、光ファイバ孔４まで
きれいに充填されるように低粘度である必要があり、研
磨時にファイバをしっかりと固定し、動かないよう高硬
度である必要がある。また、耐薬品性等の信頼性の面を
考慮し、従来は熱硬化型のエポキシ系接着剤が使用され
ていた（「オプトロニクス」第３号、１０３〜１０６
頁、１９９１年発行）。The adhesive used must have a low viscosity so that it can be filled up to the optical fiber hole 4 neatly, and must have a high hardness so that the fiber is firmly fixed during polishing and does not move. Further, in consideration of reliability such as chemical resistance, a thermosetting epoxy adhesive has been conventionally used ("Optronics" No. 3, 103-106).
Page, 1991).
【０００４】[0004]
【発明が解決しようとする課題】従来の接着剤を用いた
場合に、硬化温度から常温に冷却する際の収縮におい
て、接着剤の線膨張係数がフェルール材料の線膨張係数
よりもかなり大きいために、接着剤の収縮力によってフ
ェルールを変形させたり、光ファイバに応力を与えロス
が増大するといった問題があった。When a conventional adhesive is used, the shrinkage when cooling from the curing temperature to room temperature is because the coefficient of linear expansion of the adhesive is much larger than the coefficient of linear expansion of the ferrule material. In addition, there has been a problem that the ferrule is deformed by the contraction force of the adhesive or a stress is applied to the optical fiber to increase the loss.
【０００５】[0005]
【課題を解決するための手段】本発明者らは、以上のよ
うな課題を種々検討した結果、接着剤に含まれるフィラ
の粒径、含有量及び接着剤の粘度を最適化すると共に、
接着剤の線膨張係数、ヤング率、硬化温度と常温との温
度差を特定値、即ち特定のパラメータ値としたことによ
って、接着剤の線膨張係数とヤング率をともに小さくす
ることができ、接着剤によって発生する応力を受けるフ
ェルールの変形を抑え、光ファイバに与える応力を小さ
くするうえで有効であることを見出し、本発明を完成す
るに至った。Means for Solving the Problems The present inventors have conducted various studies on the above problems, and as a result, have found that the filler contained in the adhesive is not required.
While optimizing the particle size, content and viscosity of the adhesive,
Adhesive linear expansion coefficient, Young's modulus, curing temperature and temperature at room temperature
By setting the difference as a specific value, that is, a specific parameter value,
We, the linear expansion coefficient and the Young's modulus of the adhesive together can be reduced, suppressing the deformation of the full <br/> ferrule which receives the stress generated by the adhesive, effective to reduce the stress applied to the optical fiber And completed the present invention.
【０００６】すなわち、本発明は： 光コネクタフェ
ルールに光ファイバを取りつけ固定するための接着剤に
おいて、該接着剤が０．１μｍ以上１．０μｍ以下の粒
径を有するフィラを２０ｗｔ％以上７０ｗｔ％以下の含
有量で含み、且つ該接着剤の硬化温度における粘度 が５
０ｃｐｓ以上２０００ｃｐｓ以下であり、該接着剤の線
膨張係数（℃-1）×硬化温度と常温の温度差（℃）×ヤ
ング率（ｋｇ／ｍｍ2 ）の値が２．５以下である、光コ
ネクタ用接着剤を提供する。また、 接着剤の線膨張
係数が４．０×１０-5以下である点にも特徴を有する。
また、 接着剤のヤング率が１００ｋｇ／ｍｍ2 以上
１０００ｋｇ／ｍｍ2 以下である点にも特徴を有する。
また、 〜 のいずれかに記載の接着剤を用いて、
光コネクタのフェルールに光ファイバーを取付け、固定
した光コネクタを提供する。That is, the present invention provides:
Adhesive for attaching and fixing optical fiber to the rule
AndThe adhesive has a particle size of 0.1 μm or more and 1.0 μm or less.
Filler having a diameter of not less than 20 wt% and not more than 70 wt%
Included in large quantities,andViscosity of the adhesive at the curing temperature Is 5
0 cps or more and 2000 cps or less, The adhesive wire
Expansion coefficient (℃-1) X temperature difference between curing temperature and normal temperature (℃) x
Rate (kg / mmTwo) Is 2.5 or less.
An adhesive for a connector is provided. Also, the linear expansion of the adhesive
Coefficient is 4.0 × 10-FiveThe following points are also characteristic.
The adhesive has a Young's modulus of 100 kg / mmTwothat's all
1000kg / mmTwoThe following points are also characteristic.
Also, ~ Using the adhesive according to any of
Attach optical fiber to ferrule of optical connector and fix
An optical connector is provided.
【０００７】以下、本発明を詳細に説明する。本発明に
おいて、光コネクタ用接着剤が、線膨張係数（℃-1）×
硬化温度と常温の温度差（℃）×ヤング率（ｋｇ／ｍｍ
2 ）の値が２．５以下と言う特定のパラメータ値のもの
が必要である。特に、該接着剤の線膨張係数はフェルー
ル材料の線膨張係数（１×１０-5〜２×１０-5）に近く
小さいことが好ましく、４．０×１０-5以下が好適であ
る。Hereinafter, the present invention will be described in detail. In the present invention, the adhesive for an optical connector has a coefficient of linear expansion (° C. −1 ) ×
Temperature difference between curing temperature and normal temperature (° C) × Young's modulus (kg / mm
2 ) It is necessary to have a specific parameter value of 2.5 or less. In particular, the linear expansion coefficient of the adhesive is close to the linear expansion coefficient (1 × 10 −5 to 2 × 10 −5 ) of the ferrule material.
It is preferably small, and more preferably 4.0 × 10 −5 or less.
【０００８】該接着剤の線膨張係数を小さくするために
は、フィラを含有させるのが有効な手段であるが、フィ
ラを含有させることにより粘度が上昇し、接着剤の流れ
性が悪くなるという問題がある。そこで、フィラ含有量
は２０ｗｔ％以上７０ｗｔ％以下とし、光ファイバを取
り付ける時の温度での粘度を５０ｃｐｓ以上２０００ｃ
ｐｓ以下にすることが必要である。フィラを含有させか
つ粘度を小さくするためには、細径のフィラを用いるの
が必要であって、フィラの粒径が０．１μｍ以上１．０
μｍ以下とする必要がある。In order to reduce the coefficient of linear expansion of the adhesive, it is effective to include a filler. However, the inclusion of the filler increases the viscosity and deteriorates the flowability of the adhesive. There's a problem. Therefore, the filler content is set to 20 wt% or more and 70 wt% or less, and the viscosity at the time of attaching the optical fiber is set to 50 cps to 2000 cps.
It is necessary to set it to ps or less. In order to contain the filler and reduce the viscosity, it is necessary to use a filler having a small diameter , and the particle diameter of the filler is 0.1 μm or more and 1.0 μm or more.
It is necessary to be less than μm.
【０００９】本発明の接着剤では、上記特定のパラメー
タ値として線膨張係数とヤング率を小さくしているの
で、接着剤を硬化させた後、常温へ冷却する際の収縮力
により、フェルールが変形したり、ファイバに応力がか
かり損失が増加するといった現象が起りにくい。In the adhesive of the present invention, the above specific parameters
Since the coefficient of linear expansion and the Young's modulus are reduced as data values, after the adhesive is cured, the shrinkage force when cooling to room temperature may cause the ferrule to deform or increase the loss due to stress on the fiber. The phenomenon does not easily occur.
【００１０】本発明の接着剤では、上記パラメータ値と
するためにパラメータを構成する線膨張係数自体を小さ
くすることが必要であり、そのためには、特定の粒径を
有するフィラを２０ｗｔ％以上７０ｗｔ％以下の一定量
含有させる必要がある。含有量２０ｗｔ％未満では線膨
張係数を低減する効果が殆んどなく、７０ｗｔ％を超え
て配合した場合には、流動性が殆ど無くなってしまう。In the adhesive of the present invention, the above parameter values and
In order to achieve this, it is necessary to reduce the linear expansion coefficient itself , which constitutes the parameter , and for that purpose, a specific particle size must be reduced.
It is necessary to a certain amount <br/> content of 20wt% or less than 70 wt% of filler having. If the content is less than 20 wt%, there is almost no effect of reducing the linear expansion coefficient, and the content exceeds 70 wt% .
When mixed, the fluidity is almost lost.
【００１１】しかし、フィラを配合した場合に粘度が増
大し、十分な流動性が得られない恐れがある。そこで、
粒径０．１μｍ以上１．０μｍ以下といった特定の粒径
の細かい、例えば球状のフィラを用いることによって流
動性が良くなり、光ファイバ挿入穴の先端まできれいに
接着剤を充填することができる。フィラの粒径１．０μ
ｍを超えると充分な低粘度化の効果がなく、０．１μｍ
未満の場合には、フィラが凝集し易く充分な効果が得ら
れない。However, when the filler is blended, the viscosity increases, and there is a possibility that sufficient fluidity cannot be obtained. Therefore,
By using a fine, for example, spherical filler having a specific particle diameter of 0.1 μm or more and 1.0 μm or less, the fluidity is improved, and the adhesive can be filled up to the tip of the optical fiber insertion hole neatly. Filler particle size 1.0μ
If it exceeds 0.1 m, there is no sufficient effect of lowering the viscosity.
If it is less than 3 , the filler is liable to aggregate, and a sufficient effect cannot be obtained.
【００１２】接着剤に配合するフィラとしては、シリ
カ、炭酸カルシウム、アルミナ、マイカ等が好適であ
る。該接着剤の粘度としては、硬化温度時での粘度が５
０ｃｐｓ以上２０００ｃｐｓ以下である必要がある。５
０ｃｐｓ未満の場合には流れすぎて作業性が悪いし、２
０００ｃｐｓを超えると端面まで接着剤が流れ込まな
い。[0012] As filler used in the adhesive, silica, calcium carbonate, alumina, mica and the like are suitable. The viscosity of the adhesive, the viscosity at the time of curing temperature 5
2000cps there is a need to be inclusive 0cps. 5
When the flow rate is less than 0 cps, the flow is excessive and the workability is poor.
If it exceeds 000 cps , the adhesive does not flow to the end face.
【００１３】さらに、接着剤のヤング率は１００ｋｇ／
ｍｍ2 以上１０００ｋｇ／ｍｍ2 以下が好ましい。ヤン
グ率１０００ｋｇ／ｍｍ2 を超えると、接着剤の収縮に
よりフェルール材料や光ファイバに与える応力が大きく
なり、変形しやすく、ロス増も起こり易い。また、１０
０ｋｇ／ｍｍ2 未満では、軟らかすぎて、研磨時に充分
にファイバを保持することができない。Further, the adhesive has a Young's modulus of 100 kg /
It is preferably not less than mm 2 and not more than 1000 kg / mm 2 . If the Young's modulus exceeds 1000 kg / mm 2 , the stress applied to the ferrule material or the optical fiber due to the shrinkage of the adhesive increases, which tends to cause deformation and loss. Also, 10
If it is less than 0 kg / mm 2, it is too soft and cannot hold the fiber sufficiently during polishing.
【００１４】本発明に使用する接着剤としては、例え
ば、エポキシ系、シリコーン系、アクリル系、ウレタン
系等の接着剤が好適である。本発明の光コネクタ用接着
剤を製造するには、例えばエポテック（エポキシテクノ
ロジー社製）のような所定の粘度のエポキシ樹脂に、所
定の線膨張係数、粘度、ヤング率になるように、細径の
無機フィラーや増粘剤、揺変剤、キチソトロフェー剤、
種々の安定剤を適宜添加すれば良い。As the adhesive used in the present invention, for example, an epoxy-based, silicone-based, acrylic-based, urethane-based adhesive or the like is suitable. In order to manufacture the optical connector adhesive of the present invention, for example, an epoxy resin having a predetermined viscosity, such as Epotech (manufactured by Epoxy Technology Co., Ltd.), is coated with a small-diameter resin having a predetermined linear expansion coefficient, viscosity, and Young's modulus. Inorganic fillers, thickeners, thixotropic agents, thixotrope agents,
Various stabilizers may be appropriately added.
【００１５】[0015]
【実施例】以下、本発明を実施例に基づき具体的に説明
するが、これらは本発明の範囲を制限しない。トランス
ファ成形により図１に示したような形態の４心光コネク
タフェルールを製造した。これにシングルモードファイ
バを４心並列にならべたテープ心線を挿入し、接着剤注
入用開口部から、フィラとして粒径０．１〜１．０μｍ
のシリカ２０〜７０重量％を含有するエポキシ接着剤
（２液性熱硬化型エポキシ接着剤、硬化剤；芳香族アミ
ン）を注入し、８０℃１時間で硬化させ、図３に示した
形態の光コネクタを得た。接着剤としては表１に示した
８種類の接着剤を用い、接着剤硬化時の変形量及び波長
１．３μｍの光でロスモニタをし、接着剤硬化時の損失
増を測定した。その結果を表１に示した。EXAMPLES The present invention will now be described specifically with reference to examples, but these do not limit the scope of the present invention. A four-core optical connector ferrule having a configuration as shown in FIG. 1 was manufactured by transfer molding. A single-mode fiber is inserted into a 4-core parallel tape ribbon, and the particle size is 0.1 to 1.0 μm as a filler through the adhesive injection opening.
An epoxy adhesive (two-component thermosetting epoxy adhesive, curing agent; aromatic amine) containing 20 to 70% by weight of silica is injected and cured at 80 ° C. for 1 hour to obtain the form shown in FIG. An optical connector was obtained. As the adhesive, eight kinds of adhesives shown in Table 1 were used, and the amount of deformation at the time of curing the adhesive and the loss monitor with light having a wavelength of 1.3 μm were monitored, and the increase in loss at the time of curing the adhesive was measured. The results are shown in Table 1.
【００１６】[0016]
【表１】 （注）接着剤の線膨張係数（℃ -1 ）×硬化温度と常温の
温度差（℃）×ヤング率（ｋｇ／ｍｍ 2 ）のパラメータ
について、表１では、「常温」とは夫々以下の値と算出
される。 [Table 1] (Note) The coefficient of linear expansion of the adhesive (℃ -1 ) × curing temperature and normal temperature
Temperature difference (° C) x Young's modulus (kg / mm 2 ) parameters
In Table 1, “normal temperature” is calculated as the following value, respectively.
Is done.
【００１７】本発明の接着剤を作製するに当り、粘度を
５０ｃｐｓ以下にした場合は、流動性が良すぎてうまく
ファイバの固定ができなかった。また、粘度を２０００
ｃｐｓ以上にすると、ファイバ穴先端まで接着剤が流れ
込まなかった。線膨張係数を４．０×１０-5以下としか
つ粘度を２０００ｃｐｓ以下に調整するために、フィラ
径が０．１μｍ以上１．０μｍ以下の範囲で分布してい
るフィラを含有する接着剤を用いた場合に、接着剤硬化
後の変形量、損失増の殆んどない光コネクタフェルール
が得られた。In preparing the adhesive of the present invention, when the viscosity was set to 50 cps or less, the fluidity was too good to fix the fiber well. In addition, the viscosity is 2000
At more than cps, the adhesive did not flow to the tip of the fiber hole. In order to adjust the coefficient of linear expansion to 4.0 × 10 −5 or less and adjust the viscosity to 2000 cps or less, use an adhesive containing a filler whose filler diameter is distributed in a range of 0.1 μm to 1.0 μm. In this case, an optical connector ferrule with almost no increase in deformation and loss after curing of the adhesive was obtained.
【００１８】[0018]
【発明の効果】以上説明したように、本発明の光コネク
タ用接着剤は線膨張係数（℃-1）×硬化温度と常温との
温度差（℃）×ヤング率（ｋｇ／ｍｍ2 ）の値が２．５
以下と小さいために、接着剤硬化後のフェルール変形が
小さく、ファイバにかかる応力も小さい。また、本発明
においては、細径のフィラを用い硬化時の粘度を５０ｃ
ｐｓ以上２０００ｃｐｓ以下と小さくしているので、フ
ァイバ穴先端まで十分に接着剤が流れ込むし、十分な硬
度を有しているので、研磨時に光ファイバがかけるとい
った問題もない。As described above, the adhesive for an optical connector of the present invention has a coefficient of linear expansion (° C. −1 ) × the temperature difference between the curing temperature and normal temperature (° C.) × Young's modulus (kg / mm 2 ). Value 2.5
Due to the small value below, the ferrule deformation after curing of the adhesive is small, and the stress applied to the fiber is also small. In the present invention, the viscosity at the time of curing using a small-diameter filler is 50c.
Since it is as small as not less than ps and not more than 2000 cps, the adhesive sufficiently flows to the tip of the fiber hole, and has sufficient hardness, so that there is no problem that the optical fiber is applied during polishing.
【図１】本発明の一実施例に用いる光コネクタフェルー
ルを示す斜視図である。FIG. 1 is a perspective view showing an optical connector ferrule used in an embodiment of the present invention.
【図２】図１の光コネクタフェルールの横断面を示す模
式図である。FIG. 2 is a schematic diagram showing a cross section of the optical connector ferrule of FIG.
【図３】本発明の光コネクタ用接着剤を用いて作製した
光コネクタの一実施例を示す斜視図である。FIG. 3 is a perspective view showing one embodiment of an optical connector manufactured using the optical connector adhesive of the present invention.
１ 光コネクタフェルール ２ 接着剤注入用開口部 ３ 嵌合ピン挿入用穴 ４ 光ファイバ挿入用穴 ５ 光ファイバ挿入口 ６ ブーツ ７ テープ心線 ８ 接着剤 DESCRIPTION OF SYMBOLS 1 Optical connector ferrule 2 Adhesive injection opening 3 Fitting pin insertion hole 4 Optical fiber insertion hole 5 Optical fiber insertion port 6 Boot 7 Tape core wire 8 Adhesive
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山西 徹 神奈川県横浜市栄区田谷町１番地 住友 電気工業株式会社横浜製作所内 (56)参考文献 （論文名）Ｂ−342 ＳＭ多心光コネ クタにおける接着剤の調心効果，（刊行 物名）電子情報通信学会全国大会講演論 文集，Ｂ−１−126，1988年 （論文名）Ｃ−250 ガラスフェルー ルへの光硬化型接着剤適用の検討，（刊 行物名）電子情報通信学会全国大会講演 論文集，４−330，1993年 (58)調査した分野(Int.Cl.7，ＤＢ名) C09J 11/04 C09J 201/00 G02B 6/40 ＪＩＣＳＴファイル（ＪＯＩＳ)──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Toru Yamanishi 1 Taya-cho, Sakae-ku, Yokohama-shi, Kanagawa Prefecture Sumitomo Electric Industries, Ltd. Yokohama Works (56) Reference (Paper name) B-342 Alignment effect of adhesive, (published name) Proceedings of IEICE National Convention, B-1-126, 1988 (paper name) Examination of application of photocurable adhesive to C-250 glass ferrule , (Published title) Proc. Of the IEICE National Convention, 4-330, 1993 (58) Fields surveyed (Int. Cl. 7 , DB name) C09J 11/04 C09J 201/00 G02B 6 / 40 JICST file (JOIS)
Claims (4)
りつけ固定するための接着剤において、該接着剤が０．
１μｍ以上１．０μｍ以下の粒径を有するフィラを２０
ｗｔ％以上７０ｗｔ％以下の含有量で含み、且つ該接着
剤の硬化温度における粘度が５０ｃｐｓ以上２０００ｃ
ｐｓ以下であり、該接着剤の線膨張係数（℃-1）×硬化
温度と常温の温度差（℃）×ヤング率（ｋｇ／ｍｍ2 ）
の値が２．５以下であることを特徴とする、光コネクタ
用接着剤。1. An adhesive for attaching and fixing an optical fiber to an optical connector ferrule, wherein the adhesive is 0.1.
Fillers having a particle size of 1 μm or more and 1.0 μm or less
wherein at a content of more wt% 70 wt% or less, and adhesive
The viscosity at the curing temperature of the agent is 50 cps or more and 2000 c
ps or less, coefficient of linear expansion of the adhesive (° C. −1 ) × temperature difference between curing temperature and normal temperature (° C.) × Young's modulus (kg / mm 2 )
Characterized by having a value of 2.5 or less.
下であることを特徴とする、請求項１記載の光コネクタ
用接着剤。2. The adhesive for an optical connector according to claim 1, wherein a linear expansion coefficient of the adhesive is 4.0 × 10 −5 or less.
以上１０００ｋｇ／ｍｍ2 以下であることを特徴とす
る、請求項１記載の光コネクタ用接着剤。3. The adhesive has a Young's modulus of 100 kg / mm 2.
2. The adhesive for an optical connector according to claim 1, wherein the adhesive is not less than 1000 kg / mm 2 .
を用いて、光コネクタのフェルールに光ファイバーを取
付け、固定したことを特徴とする光コネクタ。4. Using the adhesive according to any one of claims 1 to 3 attached to the optical fiber to the ferrule of the optical connector, an optical connector, characterized in that fixed.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03618793A JP3261786B2 (en) | 1993-02-02 | 1993-02-02 | Adhesive for optical connector and optical connector |
| EP94101480A EP0609841B1 (en) | 1993-02-02 | 1994-02-01 | Optical connector ferrule filled with adhesive |
| DK94101480T DK0609841T3 (en) | 1993-02-02 | 1994-02-01 | Optical connector and adhesive therefor |
| US08/190,351 US5422971A (en) | 1993-02-02 | 1994-02-01 | Optical fiber connector using adhesive |
| DE69420990T DE69420990T2 (en) | 1993-02-02 | 1994-02-01 | Optical plug sleeve with adhesive filling |
| CA002114689A CA2114689C (en) | 1993-02-02 | 1994-02-01 | Optical connector and adhesive therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03618793A JP3261786B2 (en) | 1993-02-02 | 1993-02-02 | Adhesive for optical connector and optical connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06228515A JPH06228515A (en) | 1994-08-16 |
| JP3261786B2 true JP3261786B2 (en) | 2002-03-04 |
Family
ID=12462731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03618793A Expired - Fee Related JP3261786B2 (en) | 1993-02-02 | 1993-02-02 | Adhesive for optical connector and optical connector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3261786B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6444194B1 (en) | 1997-02-14 | 2002-09-03 | Miravant Pharmaceuticals, Inc. | Indium photosensitizers for PDT |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002232056A (en) * | 2001-01-31 | 2002-08-16 | Hamamatsu Photonics Kk | Semiconductor laser device, and fastening method of lens position thereof |
| JP4567213B2 (en) * | 2001-01-31 | 2010-10-20 | 浜松ホトニクス株式会社 | Semiconductor laser device and lens position fixing method of semiconductor laser device |
-
1993
- 1993-02-02 JP JP03618793A patent/JP3261786B2/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| （論文名）Ｂ−３４２ ＳＭ多心光コネクタにおける接着剤の調心効果，（刊行物名）電子情報通信学会全国大会講演論文集，Ｂ−１−１２６，１９８８年 |
| （論文名）Ｃ−２５０ ガラスフェルールへの光硬化型接着剤適用の検討，（刊行物名）電子情報通信学会全国大会講演論文集，４−３３０，１９９３年 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6444194B1 (en) | 1997-02-14 | 2002-09-03 | Miravant Pharmaceuticals, Inc. | Indium photosensitizers for PDT |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06228515A (en) | 1994-08-16 |
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