JPH0473607A - Optical fiber array - Google Patents
Optical fiber arrayInfo
- Publication number
- JPH0473607A JPH0473607A JP18428890A JP18428890A JPH0473607A JP H0473607 A JPH0473607 A JP H0473607A JP 18428890 A JP18428890 A JP 18428890A JP 18428890 A JP18428890 A JP 18428890A JP H0473607 A JPH0473607 A JP H0473607A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- optical
- component
- adhesive
- fiber array
- 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
- 239000013307 optical fiber Substances 0.000 title claims abstract description 86
- 230000003287 optical effect Effects 0.000 claims abstract description 46
- 239000010409 thin film Substances 0.000 claims abstract description 13
- 239000000853 adhesive Substances 0.000 abstract description 33
- 230000001070 adhesive effect Effects 0.000 abstract description 33
- 239000000758 substrate Substances 0.000 abstract description 15
- 230000008878 coupling Effects 0.000 abstract description 6
- 238000010168 coupling process Methods 0.000 abstract description 6
- 238000005859 coupling reaction Methods 0.000 abstract description 6
- 238000005304 joining Methods 0.000 abstract description 6
- 230000002708 enhancing effect Effects 0.000 abstract 2
- 238000012856 packing Methods 0.000 abstract 1
- 238000005498 polishing Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/30—Optical coupling means for use between fibre and thin-film device
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用公費〉
本発明は、光通信公費において用いられる光ファイバア
レイに関し、光ファイバや他の光部品との接着強度の信
頼性を向上するように工夫したものである。[Detailed description of the invention] <Industrial use public funds> The present invention relates to optical fiber arrays used in optical communication public funds, and is an optical fiber array that is devised to improve the reliability of adhesive strength with optical fibers and other optical components. It is something.
〈従来の技術〉
従来、光ファイバと光部品とを結合する場合、まず、光
部品との接続性を考慮した光フマバ保持部品に光ツー・
ヂバを保持して光７〒イバア；、・イとし、この光ファ
イバアレイと光部品とを結合するようにして′、）ろ、
ここで、従来の光ファイバアレイの構造を第６図及び第
７図に示す、両図に示すように、従来の光７アイバア、
イ（よ、彼覆光７−−’バ１の被覆を除去した光ファイ
バｌａに接着剤２を何重し、これを２枚の光ファイバ保
持部品３Ａ、あるいは光）〒イバ保持部品３Ｂにより挾
み込んで固定したものである。光ファイバ保持部品３Ａ
は、光ファイバ１ａを保持するためのＶ溝を形成したも
ので、いわゆるＶ溝基板と呼ばれろものであり、また、
光ファイバ保持部品３Ｂは、光ファイバ１ａを保持する
ための凹溝を形成したものであり、いわゆる凹溝基板と
呼ばれるものである。<Conventional technology> Conventionally, when coupling an optical fiber and an optical component, first, an optical fiber is attached to the optical fiber holding part in consideration of connectivity with the optical component.
Hold the fiber and connect the optical fiber array to the optical component.
Here, the structure of a conventional optical fiber array is shown in FIGS. 6 and 7. As shown in both figures, the conventional optical fiber array
A. Apply several layers of adhesive 2 to the optical fiber la from which the coating of bar 1 has been removed, and attach it to the two optical fiber holding parts 3A, or the optical fiber holding part 3B. It is clamped and fixed. Optical fiber holding part 3A
The substrate has a V-groove for holding the optical fiber 1a, and is called a V-groove substrate.
The optical fiber holding component 3B has a groove formed therein for holding the optical fiber 1a, and is what is called a groove substrate.
そして、従来はこのような光ファイバアレイの光部品と
の接続側端面４を光ファイバ１ａの端面１ｂと共に鏡面
研磨した後、図示しない光部品と接続するようにしてい
た。Conventionally, the end face 4 of such an optical fiber array on the connection side with the optical component was mirror-polished together with the end face 1b of the optical fiber 1a, and then the end face 4 was connected to the optical component (not shown).
〈発明が解決しようとする課題〉
しかし、従来においては、光ファイバ１ａとＶ溝基板３
Ａ若しくは凹溝基板３Ｂとを接着する場合、又は製作し
た光ファイバアレイと他の光部品とを接着する場合、構
成材料及び接着剤のＷＩＩ［によって接着強度が十分で
なく、経時変化により接着部分の剥離が生じる可能性が
あり、接着の信頼性に欠けるという問題があった。<Problem to be solved by the invention> However, in the past, the optical fiber 1a and the V-groove substrate 3
When bonding A or the concave groove substrate 3B, or when bonding the fabricated optical fiber array and other optical components, the adhesive strength may not be sufficient due to the constituent materials and adhesive WII, and the bonded portion may deteriorate over time. There was a problem that peeling may occur, and the reliability of adhesion was lacking.
く課題を解決するための手段〉
前記目的を達成する本発明に係る光ファイバアレイ少な
くとも一本の光ファイバ保持用の溝を有する光ファイバ
保持部品に光ファイバを接着固定した光ファイバアレイ
であって、上記光ファイバ保持部品の上記光ファイバ及
び光部品の少なくとも一方との接触する部分に薄膜を被
覆してあることを特徴とする。Means for Solving the Problems> Optical fiber array according to the present invention that achieves the above object An optical fiber array in which optical fibers are adhesively fixed to an optical fiber holding part having at least one optical fiber holding groove, A thin film is coated on a portion of the optical fiber holding component that comes into contact with at least one of the optical fiber and the optical component.
く作 用〉
光ファイバ及び光部品の少なくとも一方と接触する部分
に薄膜を被覆しである光ファイバ保持部品を用いると、
光ファイバや光部品と固定接着する場合、薄膜を介して
接着されるので、接着強度が向上されろ。Function> When using an optical fiber holding part whose part that contacts at least one of the optical fiber and the optical component is coated with a thin film,
When fixedly adhering to optical fibers or optical components, the adhesion is done through a thin film, which improves the adhesion strength.
く実 施 例〉 以下、本発明を実施例に基づいて説明する。Practical example Hereinafter, the present invention will be explained based on examples.
第１図〜第３図は、一実施例に係る光フアイバアレイの
構造を示す。これらの図面中、１１ｉよ被覆光ファイバ
、１ｌａｌ、？？！１ｇを除去した光ファイバ、１２は
接着剤、］３は例えばンリコン基板に所定の精度でＶ溝
加工したファイバ保持部品（以下、■溝基板という）で
あり、光ファイバｌｌａは接着剤１２によ）ＩＶ溝基板
１３のＶ溝１３ａに固着されている。1 to 3 show the structure of an optical fiber array according to one embodiment. In these drawings, 11i, coated optical fiber, 1lal, ? ? ! 1g is removed, 12 is an adhesive, ] 3 is a fiber holding part (hereinafter referred to as ``groove board'') formed by machining a V-groove with a predetermined precision on, for example, an adhesive board, and the optical fiber lla is removed by the adhesive 12. ) It is fixed to the V groove 13a of the IV groove substrate 13.
このような光ファイバアレイを製造するには、まず、■
溝基板１３を所定の寸法、例えば５ ｗｍ Ｘ ５ ｍ
に切断しなければならないが、このとき、光部品と結合
させる光ファイバ１１ａの端面１１ｂ側の光部品接合側
端面１４はカッティングソー等により略垂直に切断する
だけでよい。勿論、ラッピング等を施しても差し支えな
い。To manufacture such an optical fiber array, first
The groove substrate 13 has a predetermined size, for example, 5 wm x 5 m.
However, at this time, the optical component bonding side end surface 14 on the end surface 11b side of the optical fiber 11a to be coupled with the optical component only needs to be cut approximately vertically using a cutting saw or the like. Of course, wrapping or the like may be applied.
ここで、例えば流動性あろい：よ接着剤１２として紫外
′ｓ便化型接着剤を用ｂ）ろことを前文ると、光ファイ
バＩｌａ側の接着には十分な強度が得られるが、■溝基
板１３側の接着には十分な接着強度が得られな５）、シ
たがって、■１基板１３の光ファイバｌｌａとの接着剤
である上面及び光部品接合側端面１４には接着力強度用
薄ｇＩ！１５ ａ、１５ｂが形成されている。Here, for example, if an ultraviolet ray adhesive with good fluidity is used as the adhesive 12, b) sufficient strength can be obtained for adhesion on the optical fiber Ila side, but Sufficient adhesive strength cannot be obtained for bonding on the grooved substrate 13 side5), therefore, the upper surface and the end surface 14 on the optical component bonding side, which is the adhesive for bonding the optical fiber lla of the first substrate 13, have insufficient adhesive strength. For thin gI! 15a and 15b are formed.
薄！！！１５ ａ、 １５ ｂｌよ例えば０．１μｍ程
度の酸化物膜であり、接着剤１２との接着力を高めるも
のであれば特に限定されない。また、シリコンの場合、
例えば酸素雰囲気中で熱処理を行えば良質な薄膜１５ａ
、１５ｂが得られるが、勿論、形成の方法も特に限定さ
れない。Thin! ! ! 15 a and 15 bl are oxide films with a thickness of, for example, about 0.1 μm, and are not particularly limited as long as they enhance adhesive strength with the adhesive 12 . Also, in the case of silicon,
For example, if heat treatment is performed in an oxygen atmosphere, a high quality thin film 15a can be obtained.
, 15b are obtained, but of course the method of formation is not particularly limited.
次に、このＶ溝基板１３のＶ溝り３ａ内に、応力破断等
により端面１１ｂを所定の形状とした光ファイバｌｌａ
を設置する。そして、微動装置等を用いて光ファイバｌ
ｌａの端面１１ｂとＶ溝基板１３の光部品接合側端面１
４とをほぼ一致させる。Next, an optical fiber lla whose end face 11b has been made into a predetermined shape by stress rupture or the like is inserted into the V groove 3a of this V groove substrate 13.
Set up. Then, using a fine movement device etc., the optical fiber l is
end face 11b of la and optical component bonding side end face 1 of V-groove board 13
4 should almost match.
ここで、端面１１ｂと光部品接合側端面１４との位置ず
れ量ｄ（端面１１ｂが光部品接合側端面１４より突出し
ていても引込んでいてもよい）による光部品との結合損
失は、光ファイバｌｌａのモードフィールド半径を例え
ば９μｍとすると、第４図に示すような特性となる。す
なわち、損失量を例えば０．５ｄＢ以下にする位置ずれ
量ｄは３０μｍ程度であり、１００倍程度の！Ｉ［黴鏡
を用いて容易に得ることができる位置精度である。また
、偏波保持ファイバのように光ファイバｌｌａに方向性
がある場合、光ファイバｌｌａの端面１１ｂを見ながら
回転調整することが可能となる。Here, the coupling loss with the optical component due to the amount of misalignment d between the end surface 11b and the optical component bonding side end surface 14 (the end surface 11b may protrude or retract from the optical component bonding side end surface 14) is If the mode field radius of lla is, for example, 9 μm, the characteristics will be as shown in FIG. That is, the amount of positional deviation d that reduces the amount of loss to, for example, 0.5 dB or less is about 30 μm, which is about 100 times larger! I [This is a positional accuracy that can be easily obtained using a mirror. Further, when the optical fiber lla has directionality, such as a polarization-maintaining fiber, it is possible to perform rotational adjustment while looking at the end face 11b of the optical fiber lla.
このように位置調整を行った光ファイバ１１ａを上から
押え付けてＶ溝基板１３のＶ溝１３ｍの側面に接触させ
、その後、隙間に流動性の接着剤１２、例えば紫外線硬
化型接着剤を充填し、紫外線の照射等により固定接着し
て光ファイバアＬ！１６とする。このように形成された
光ファイバアレイ１６は光ファイバｌｌａとの接着の信
頼性が高いものである。The optical fiber 11a whose position has been adjusted in this way is pressed down from above and brought into contact with the side surface of the V-groove 13m of the V-groove substrate 13, and then the gap is filled with a fluid adhesive 12, such as an ultraviolet curing adhesive. Then, fix the optical fiber by irradiating it with ultraviolet rays, etc. to make the optical fiber L! 16. The optical fiber array 16 formed in this manner has high reliability in adhesion to the optical fibers lla.
次に、このようにして作製した光ファイバアレイ１６を
光部品と結合して光ファイバアレイ付光部品とする場合
について説明する。Next, a case will be described in which the optical fiber array 16 produced in this manner is combined with an optical component to form an optical component with an optical fiber array.
このとき、上述した光ファイバアレイ１６は光部品接合
側端面１４は鏡面研磨等せず、そのまま用いる。そして
、第５図に示すように、光ファイバアレイ１６を光部品
１７の接合端面１８と当接させ、光部品１６の光導波路
１９と光ファイバｌｌａとの光結合効率が最大となるよ
うに位置合わせを行った後、上述した光ファイバアレイ
１６の作製と同様に接着剤１２を光ファイバ保持部品１
３と光部品１２との隙間に充填し、固定接着する。At this time, the optical fiber array 16 described above is used as it is without mirror polishing the end surface 14 on the optical component joining side. Then, as shown in FIG. 5, the optical fiber array 16 is brought into contact with the joint end surface 18 of the optical component 17, and positioned so that the optical coupling efficiency between the optical waveguide 19 of the optical component 16 and the optical fiber lla is maximized. After the alignment, the adhesive 12 is applied to the optical fiber holding part 1 in the same manner as in the production of the optical fiber array 16 described above.
3 and the optical component 12 and fixedly adhered.
以上説明したように、本発明方法によると、■溝基板１
３のＶ溝１３ａの側面及び光部品接合側端面１４に接着
力強化用の薄膜１５ａ１１５ｂが形成されているので、
接着剤１２により接着強度を十分に高めることができる
。As explained above, according to the method of the present invention, ■Groove substrate 1
Since the thin film 15a115b for reinforcing adhesive strength is formed on the side surface of the V-groove 13a of No. 3 and the end surface 14 on the optical component joining side,
The adhesive 12 can sufficiently increase adhesive strength.
なお、光部品１７どの接続を行う場合、光部品１７側の
接着力が不十分なときはその接合端面１８にも同様な接
着力強化用薄膜を形成しておくのが好ましいことは言う
までもない。It goes without saying that when connecting the optical components 17, if the adhesive force on the optical component 17 side is insufficient, it is preferable to form a similar adhesive strength strengthening thin film on the joining end surface 18 as well.
また、上記実施例では光ファイバアレイ１６の製造工程
が少なく、製造が容易であり、薄膜１５ａ、１５ｂの形
成も予め行えるという利点がある。しかも、光ファイバ
アレイ１６の端面には鏡面研磨を施していないので、光
ファイバｌｌａの端面１１ｂが顕微鏡等で容易に識別で
き、大まかな位置合せが簡単で、光結合を行う作業性が
良好になる。Further, the above embodiment has the advantage that the number of manufacturing steps for the optical fiber array 16 is small, the manufacturing is easy, and the thin films 15a and 15b can be formed in advance. Moreover, since the end face of the optical fiber array 16 is not mirror-polished, the end face 11b of the optical fiber lla can be easily identified with a microscope, etc., and rough positioning is easy and the workability of optical coupling is good. Become.
さらに、上述したような光ファイバアレイ１６では、光
ファイバｌ１ｍの固定後に光ファイバｌｌａを押えてい
た力が除去されてしまうため、不要な応力が小さくなる
。したがって、光ファイバｌｌａが偏波保持ファイバの
場合、クロストークの劣化が少ない光ファイバアレイを
、結きした光部品が実現できろ。Furthermore, in the optical fiber array 16 as described above, the force that was holding down the optical fibers lla is removed after the optical fibers l1m are fixed, so that unnecessary stress is reduced. Therefore, if the optical fiber lla is a polarization-maintaining fiber, it is possible to realize an optical component that connects an optical fiber array with less deterioration due to crosstalk.
なお、上述した実施例では、光ファイバ保持部品として
ノリコシのＶ、１４基板を例に挙げて説明したが、金萬
、ガラス、プラスチック等の所定の加工精度を有する材
料を用いて光ファイバが慄持てきる構造の溝を形成した
ものであれば特に限定されない。また、流動性のある接
着剤として紫外線硬化型接着剤を例示したが、金属ハレ
ダ等の他の流動性接着剤を用いても同様の効果が得られ
る。さらに、光ファノバの端面を応力破断て形成した例
を説明したが、垂直研磨や斜め研磨、又は球面研磨して
形成した光ファイバを用いても同様の効果が得られる。In the above-mentioned embodiments, Norikoshi's V, 14 board was used as an example of the optical fiber holding part. It is not particularly limited as long as it has a groove that allows it to be held. Further, although an ultraviolet curable adhesive is exemplified as a fluid adhesive, similar effects can be obtained by using other fluid adhesives such as metal solder. Further, although an example has been described in which the end face of the optical fannova is formed by stress-rupturing, the same effect can be obtained by using an optical fiber formed by vertical polishing, diagonal polishing, or spherical polishing.
なお、本発明は従来技術の項で説明した構造の光ファイ
バアレイにも通用できろ。すなわち、例えば第６図に示
すように、鏡面研磨した後のＶ溝基板接続側端面４に、
例えば真空蒸着等により薄膜を被覆すれば、光部品と接
着固定する場合の信頼性を向上することができる。Incidentally, the present invention can also be applied to an optical fiber array having the structure described in the section of the prior art. That is, as shown in FIG. 6, for example, on the V-groove substrate connection side end surface 4 after mirror polishing,
For example, if a thin film is coated by vacuum evaporation or the like, reliability when adhesively fixing to an optical component can be improved.
〈発明の効果〉
以上説明したように、本発明に係る光フアイバアレイ（
よ、光ファイバ保持部品に接着力強化用の薄膜が形成さ
れているので、光ファイバや光部品を固定する場合、接
着強度が増大し、信頼性の高いものである。<Effects of the Invention> As explained above, the optical fiber array (
Since a thin film for reinforcing adhesive strength is formed on the optical fiber holding component, the adhesive strength is increased and reliability is high when fixing optical fibers or optical components.
第１図は一実施例に係る光ファイバアレイを示す斜視図
、第２図及び第３図はそのＩＩ−ＩＩ線及びｌ−１１［
断面図、第４図は光ファイバの光軸方向の結合損失性を
示すグラフ、第５図Ｃよ一実施例に係る光ファイバアレ
イ付光部品を示す側面図、第６図及び第７図ζよ従来技
術に係る光ファイバアレイを示す斜視図である。
図面中、
１１は被覆付光ファイバ、
１１ａは光ファイバ、
１ｂは端面、
２は接着剤、
３はＶ溝基板、
４は光部品接合側端面、
５ｍ、１５ｂは薄膜、
６は光ファイバアレイ、
７は光部品、
８は接合端面、
９は光導波路である。FIG. 1 is a perspective view showing an optical fiber array according to one embodiment, and FIGS. 2 and 3 are line II-II and l-11 [
4 is a graph showing coupling loss in the optical axis direction of an optical fiber, FIG. 5C is a side view showing an optical component with an optical fiber array according to an embodiment, and FIGS. 6 and 7 1 is a perspective view showing an optical fiber array according to the prior art; FIG. In the drawings, 11 is a coated optical fiber, 11a is an optical fiber, 1b is an end face, 2 is an adhesive, 3 is a V-groove substrate, 4 is an end face on the optical component joining side, 5m, 15b is a thin film, 6 is an optical fiber array, 7 is an optical component, 8 is a joint end face, and 9 is an optical waveguide.
Claims (1)
イバ保持部品に光ファイバを接着固定した光ファイバア
レイであって、上記光ファイバ保持部品の上記光ファイ
バ及び光部品の少なくとも一方との接触する部分に薄膜
を被覆してあることを特徴とする光ファイバアレイ。An optical fiber array in which optical fibers are adhesively fixed to an optical fiber holding part having at least one optical fiber holding groove, the part of the optical fiber holding part coming into contact with at least one of the optical fiber and the optical component. An optical fiber array characterized by being coated with a thin film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18428890A JPH0473607A (en) | 1990-07-13 | 1990-07-13 | Optical fiber array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18428890A JPH0473607A (en) | 1990-07-13 | 1990-07-13 | Optical fiber array |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0473607A true JPH0473607A (en) | 1992-03-09 |
Family
ID=16150705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18428890A Pending JPH0473607A (en) | 1990-07-13 | 1990-07-13 | Optical fiber array |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0473607A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002023239A1 (en) * | 2000-09-04 | 2002-03-21 | Ngk Insulators, Ltd | Optical fiber array and its production method |
-
1990
- 1990-07-13 JP JP18428890A patent/JPH0473607A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002023239A1 (en) * | 2000-09-04 | 2002-03-21 | Ngk Insulators, Ltd | Optical fiber array and its production method |
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