JPS58153916A - Production for optical distributor - Google Patents
Production for optical distributorInfo
- Publication number
- JPS58153916A JPS58153916A JP3625582A JP3625582A JPS58153916A JP S58153916 A JPS58153916 A JP S58153916A JP 3625582 A JP3625582 A JP 3625582A JP 3625582 A JP3625582 A JP 3625582A JP S58153916 A JPS58153916 A JP S58153916A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- optical
- shape
- heat
- cross
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000013307 optical fiber Substances 0.000 claims abstract description 38
- 239000000835 fiber Substances 0.000 claims abstract description 5
- 238000009826 distribution Methods 0.000 abstract description 13
- 238000000465 moulding Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000013459 approach Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000007500 overflow downdraw method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding 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
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2808—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using a mixing element which evenly distributes an input signal over a number of outputs
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】 本発明は、光分配器の製造方法に係る。[Detailed description of the invention] The present invention relates to a method of manufacturing an optical distributor.
熱融着法を用いて光分配器を製造するに当り、分配数が
１対３以上の場合、各党ファイバのコア形状を中心に対
して対称な形に製造するのは国難である。When manufacturing an optical distributor using a thermal fusion method, it is a national problem to manufacture the core shapes of each fiber in a symmetrical shape with respect to the center when the distribution ratio is 1:3 or more.
本発明は、上記の事情に基づきなされたもので、熱融着
させるべき光ファイバの端部な分配数に応じてあらかじ
め所定の中心角を有するように成形加工しておき、次い
で上記端部を組み合せて熱融着させ、中心に対してコア
形状が対称になるようにし、所期の分配比が得られるよ
うにした光分配器の製造方法を提供することを目的とす
る。The present invention has been made based on the above-mentioned circumstances.The ends of the optical fibers to be heat-sealed are formed in advance to have a predetermined central angle according to the number of distributions, and then the ends are The object of the present invention is to provide a method for manufacturing an optical distributor in which a desired distribution ratio can be obtained by combining and heat-sealing the components so that the core shape is symmetrical with respect to the center.
以下に、本発明の実施例を図面を参照にして説明する。Embodiments of the present invention will be described below with reference to the drawings.
第１図ないし第４図は、本発明の第１の実施例を示すも
ので、１対４の光分配器を製作する場合に先ず、光ファ
イバ１の単線をＶブロック２に載せ、端末を所定の中心
角を有する形状に加工する。1 to 4 show a first embodiment of the present invention. When manufacturing a 1:4 optical splitter, first, a single optical fiber 1 is placed on a V block 2, and the terminal is Process into a shape with a predetermined central angle.
すなわち、■ブロック２の表面の長手方向には、先端か
ら後端に向って漸次深さが浅くなるＶＩＩ１３が形成さ
れ、最先端のＶ溝３の深さは、光ファイバ１が表面より
、十分没する深さとし、最後端は深さ零になるように形
成される。In other words, VII 13 is formed in the longitudinal direction of the surface of the block 2, the depth of which gradually becomes shallower from the tip to the rear end, and the depth of the V-groove 3 at the tip is such that the optical fiber 1 is sufficiently deep than the surface. The depth is such that the depth is zero at the rearmost end.
また、■溝３の角度は９０°とする。Also, the angle of the groove 3 is 90°.
上記のＶブロック２のＶ溝３に光ファイバ１の端部な載
せ、第１図に示すようにヒータ４によって加熱する。な
お、加熱温度は、９００℃程度から多成分ガラスファイ
バの溶融源である約１２００℃まで約６時間程度かけて
徐々に加熱を行なう。The end of the optical fiber 1 is placed in the V-groove 3 of the V-block 2, and heated by a heater 4 as shown in FIG. Note that the heating temperature is gradually increased from about 900° C. to about 1200° C., which is the melting source of the multicomponent glass fiber, over about 6 hours.
上記の操作により光ファイバ１は、第３図のように変形
する。By the above operation, the optical fiber 1 is deformed as shown in FIG.
すなわち、■ブロック２に載置されない部分は第３図Ａ
−Ａ断面図に示すように円形断面でなんら変形されない
か、■ブロック２に載置されたｔ区間は、最後端近傍が
Ｂ−Ｂ断°面のごとく、また、最先端近傍では、Ｃ−Ｃ
断面に示すごとく頂角６０°の正三角形の形状に成形さ
れる。In other words, ■The parts that are not placed on block 2 are shown in Figure 3A.
- As shown in the cross-sectional view A, the section t placed on block 2 has a circular cross section and is not deformed in any way. C
As shown in the cross section, it is formed into an equilateral triangular shape with an apex angle of 60°.
上記のように４本の光ファイバ１の端部をそれぞれ加工
し、第４図（イ）、（ロ）に示すように成形した端部１
ａを互に密着させて突き合せ熱融着させる。The ends of the four optical fibers 1 are processed as described above, and the end parts 1 are formed as shown in FIGS. 4(a) and 4(b).
A are brought into close contact with each other, butted and heat-sealed.
この場合、互いに密着させる部分は、上記の成形加工し
た端部の一部であり、この実施例では、約１０ｃＩｎと
した。In this case, the portions to be brought into close contact with each other are part of the above-mentioned molded ends, and in this example, the thickness was about 10 cIn.
そして、この密着部分に成形加工した部分が、再度変形
しな−い程度の温度にして加熱し、かつ所定の引張力を
加えて最先端の外径が接続すべき光ファイバの外径に近
くなるようにテーパ状に加工法に、第５図に示すように
、接続すべき光ファイバ５の端部とテーパ状に加工した
光ファイバ１の端部１ａとを突き合せ、熱融着させ、１
対４の光分配器６を形成する。Then, the molded part is heated to a temperature that will not deform again, and a predetermined tensile force is applied so that the outer diameter of the leading edge approaches the outer diameter of the optical fiber to be connected. According to the tapered processing method, as shown in FIG. 5, the end of the optical fiber 5 to be connected and the end 1a of the tapered optical fiber 1 are butted together and thermally fused. 1
A pair of four optical distributors 6 is formed.
なお、上記光分配器６の各部分の断面形状は、それぞれ
Ａ−Ａ、Ｂ−Ｂ、Ｃ−Ｃ及びＤ−Ｄ線に沿う形状となる
。Ｄ−Ｄ線については右方を見た断面と左方を見た断面
とを図示した。Note that the cross-sectional shapes of each portion of the optical distributor 6 are along lines AA, BB, CC, and DD, respectively. Regarding the DD line, a cross section looking to the right and a cross section looking to the left are illustrated.
ここで、１本のファイバを図の上方から見れば、Ａ−Ａ
、Ｂ−Ｂ断面部分からＣ−Ｃ断面部分に至るまで外径が
見かけ上拡大し、Ｃ−Ｃ断面部分からＤ−Ｄ断面部分に
至るまで外径が縮少するよう構成されている。Here, if you look at one fiber from the top of the diagram, A-A
, the outer diameter apparently increases from the BB cross section to the CC cross section, and decreases from the CC cross section to the D-D cross section.
本発明者等の実験によれば、この最大径のＣ−Ｃ断面外
径が、最小径のＤ−Ｄ断面に対して１．１から１．５倍
、好ましくは１．２から１．３倍のとき接続損失が最も
少ないこ”′：とが判明した。According to experiments conducted by the present inventors, the outer diameter of the C-C cross section of the maximum diameter is 1.1 to 1.5 times, preferably 1.2 to 1.3 times, the outer diameter of the C-C cross section of the minimum diameter. It was found that the connection loss is the lowest when the
従って、Ｃ−Ｃ部分は最終的にこのような条件に添うよ
う加熱して引伸（ズす−ようにする。Therefore, the C--C portion is finally heated and stretched to meet these conditions.
第６図は、本発明の第２の実施例を示すもので、光ファ
イバ１の端部を加工するＶブロック２のＶ溝３の底部形
状をやや丸みをおびさせたものである。FIG. 6 shows a second embodiment of the present invention, in which the bottom shape of the V-groove 3 of the V-block 2 for processing the end of the optical fiber 1 is slightly rounded.
この実施例では、第７図（イ）に示すごとく、やや配列
がくずれやすく、かつ融着後も同図←）に示すごとく中
心に対して正確な対称形にならなｔ・カー、損失は第１
の実施例とほとんど便らな（・。し力・も分配器を製作
する場合に引張力を加えてテーノ（状にする際に破断し
にくいという利点がある。In this example, as shown in Fig. 7 (a), the arrangement tends to be slightly distorted, and even after welding, the shape is not exactly symmetrical with respect to the center as shown in the same figure ←). 1st
This embodiment has the advantage that it is difficult to break when applying tensile force to form a shape when manufacturing a force distributor.
第８図ないし第１２図は、本発明の第３の実施例な示す
もので、■ブロック２のＶ溝３の形状を先端部から一定
長さだけ同−深さの部分ｙｅする形成し、かつ光ファイ
ノ脣１の外径よりも浅（・深さとし、また、この部分ｍ
ｌに続いて後端部まで漸次浅さくなる部分ｍ２を形成し
たものである。なお、この実施例においてもＶ溝３の開
口度は、９０°とする。FIGS. 8 to 12 show a third embodiment of the present invention, in which: (1) the shape of the V-groove 3 of the block 2 is formed so that a portion of the same depth is formed by a certain length from the tip; and is shallower than the outer diameter of the optical fiber (depth 1), and this part m
1, a portion m2 is formed which gradually becomes shallower to the rear end. In this embodiment as well, the opening degree of the V-groove 3 is 90°.
上記のＶブロック２を用いて第８図のように光ファイバ
ｌを載置し、ヒータ４により徐々に加熱すると、溶融時
の表面張力により、第９図に示すように光ファイバ１の
端部が一定長さに亘って扇形に形成される。When the optical fiber 1 is placed on the V-block 2 as shown in FIG. 8 and gradually heated by the heater 4, the end of the optical fiber 1 is heated as shown in FIG. is formed in a fan shape over a certain length.
なお、各部の断面形状及び端面形状は第１１図（イ）、
（ロ）に示すようになる。The cross-sectional shape and end face shape of each part are shown in Figure 11 (a),
It becomes as shown in (b).
上記のように成形加工された光ファイ・（１を用いて光
分配器６を形成するには、第１２図に示すように、先ず
、４本の光ファイノ（１の端末のｍ３部分を互いに密着
させ、所定温度で加熱し、一定の引張力を加えて、接続
すべき光ファイ・（５の外・径に近ずくまでテーパ状に
引き伸ばす。次いで、前記の光ファイバ５の端面と突き
合せ、所定温度に加熱し、両者を融着させる。To form the optical distributor 6 using the optical fibers (1) molded as described above, first, as shown in FIG. The fibers are brought into close contact with each other, heated at a predetermined temperature, and a certain tensile force is applied to stretch them in a tapered shape until they approach the outer diameter of the optical fiber 5 to be connected. , heated to a predetermined temperature to fuse the two.
以上の方法によって形成された光分配器は、集合させる
個々の光ファイノく１の端部が一定の範囲に亘って所定
の中心角を有する扇形に形成されているので、溶融時に
表面張力により中心に対してより正確に対称形となりや
すく、分配比を均等にすることができる。In the light distributor formed by the above method, the ends of the individual optical fibers 1 to be assembled are formed into a fan shape having a predetermined center angle over a certain range, so that the center of the light splitter is caused by surface tension when melted. It is easier to form a more accurately symmetrical shape, and the distribution ratio can be made equal.
第１３図及び第１４図は、本発明の第４の実施例を示す
もので、光ファイバ１の端部を扇形に形成するのに熱伝
導率の大きい材料、たとえばセラミック、石英等で形成
した比較的長尺の治具７を用いたものである。13 and 14 show a fourth embodiment of the present invention, in which the end of the optical fiber 1 is formed into a fan shape using a material with high thermal conductivity, such as ceramic or quartz. A relatively long jig 7 is used.
この治比７には、その長手方向に亘って一定の深さで、
開口度約９０°のＶ溝８が形成されており、このＶ溝８
に光ファイバーの端部を載置し、ヒータ９により、先端
部を加熱する。In this ratio 7, at a constant depth along its longitudinal direction,
A V-groove 8 with an opening degree of about 90° is formed, and this V-groove 8
The end of the optical fiber is placed on the holder, and the tip is heated by the heater 9.
この実施例では、加熱手緩が゛少ｔｘ ＜て済み経済性
に優れている等の特徴を有する。This embodiment has features such as less heating time and excellent economical efficiency.
第１５図及び第１６図は、本発明の第５の実施例を示す
もので、治具７を互いに熱伝導率の異なる材料、たとえ
ばセラミックとステンレス等により形成し、ヒータ９を
治具９の長手方向に沿って、きわめて低速、たとえば約
６時間程度かけて移動させ、第１６図に示すような形状
に変形させたものである。15 and 16 show a fifth embodiment of the present invention, in which the jig 7 is made of materials having different thermal conductivities, such as ceramic and stainless steel, and the heater 9 is connected to the jig 9. It was moved along the longitudinal direction at a very low speed, for example, over about 6 hours, and deformed into the shape shown in FIG. 16.
この場合、治具７に載置しない部分は、Ａ−Ａ１
及びＢ−Ｂ線に沿う断面図のように変形されず、断面形
状円形であるが、光分配器を製作する一場合には、図示
ｍ４の部分を切り捨てて、扇形端面部分を集合させて、
互いに融着させ、テーバ加工して他方の光ファイバと熱
融着させる。In this case, the portion that is not placed on the jig 7 is not deformed and has a circular cross-sectional shape as shown in the cross-sectional view taken along lines A-A1 and B-B. Cut off the part of m4 shown in the figure and collect the fan-shaped end face parts,
They are fused together, tapered, and heat fused to the other optical fiber.
この実施例では、治具７を熱伝導率の異なる材料を組み
合せて形成したので、長手方向に沿って異なる断面形状
をより形成し易いという利点がある。In this embodiment, since the jig 7 is formed by combining materials with different thermal conductivities, there is an advantage that it is easier to form different cross-sectional shapes along the longitudinal direction.
第１７図は、本発明の第６の実施例を示すもので、異な
る分配比の光分配器を製作する場合の例を示し、一層目
の光ファイバー１とこの光ファイバー１の周囲に配列す
る光ファイバー２の端部成形用のＶブロック２又は治具
７に異なる溝形状を有するものを使用して、熱融着させ
たものである。FIG. 17 shows a sixth embodiment of the present invention, and shows an example in which optical splitters with different distribution ratios are manufactured. The V-block 2 or the jig 7 for forming the end portions having different groove shapes are used and heat-sealed.
この実施例では、異なる分配比の光分配器が正確に、か
つ効率良く製作することができる。なお、このような断
面形状であっても、この分配器に入射するガウス分布状
の光のパワー分布を考慮して、外層はど断面積を大きく
とりガウス分布と反比例漬
するようにすれば、等分配比を得ることができる。In this embodiment, optical splitters with different distribution ratios can be manufactured accurately and efficiently. Even with such a cross-sectional shape, if the outer layer has a large cross-sectional area and is inversely proportional to the Gaussian distribution, taking into consideration the Gaussian power distribution of the light incident on the distributor, Equal distribution ratios can be obtained.
本発明は、上記の説明から明らかなように光分配器を製
作する場合に、集合させる光ファイバの端部をあらかじ
め扇形あるいは、三角形等これに近似した形状に形成し
ておくために、配列が容易であり、かつそれらを熱融着
させた場合に中心に対して、はぼ正確に対称形状を形成
することが可能となり、所期の分配比の光分□配器を効
率良く製作することができる。As is clear from the above description, when manufacturing an optical splitter, the present invention is advantageous in that the ends of the optical fibers to be assembled are formed in advance into a fan shape or a shape similar to this, such as a triangle. It is easy to use, and when they are heat-fused, it is possible to form a shape that is almost exactly symmetrical about the center, and it is possible to efficiently manufacture a light distributor with the desired distribution ratio. can.
なお、本発明の実施例では１対４の光分配器を製作する
場合について説明したが、勿論これに限定されるもので
はなく、■ブロックあるいは治具のＶ溝の角度を適宜選
択することにより種々の分配比の光分配器を正確にかつ
効率良く製作することが可能である。In the embodiments of the present invention, a case was explained in which a 1:4 optical splitter was manufactured, but the invention is of course not limited to this. It is possible to accurately and efficiently manufacture optical distributors with various distribution ratios.
第１図ないし第５図は、本発明の第１の実施例を示し、
第１図は、光ファイバの端部の加工方法を示す図、第２
図は、上記端部を載置するＶブロックの斜視図、第３図
は、光ファイバの端部の加工後の平面図及びＡ−Ａ、Ｂ
−Ｂ、Ｃ−Ｃ線に沿う断面図、第４図（イ）、（ロ）は
、４本の光ファイバの端部な集合させ、熱融着させた状
態の平面図及び端面図、第５図は、光分配器を形成した
場合の平面図及びＡ−Ａ、 Ｂ−Ｂ、 Ｃ−Ｃ，Ｄ−Ｄ
線に沿う断面図、第６図及び第７図（イ）、（ロ）は、
本発明の第２の実施例を示し、第６図は、光ファイバの
端部の加工方法を示す図、第７図囚は、上記端部の配列
状態を示す図、同図（Ｂ）は、溶融後の状態を示す図、
第８図ないし第１２図（イ）、（ロ）は、本発明の第３
の実施例を示すもので、第８図は、光ファイバの端部の
加工方法を示す図、第９図は、前記加５工後の端面図、
第１０図は、前記の加工をする場合のＶブロックの斜視
図、第１１図（イ）は、前記加工後の光ファイバの端部
を示す平面図及びＡ−Ａ。
Ｂ−Ｂ、Ｃ−Ｃ線に沿う断面図、同図（ロ）は、前記光
ファイバの端面図、第１２図（イ）、（ロ）は、加工後
の光ファイバの端部を集合させ、熱融着させた状態の平
面図及び同図（ロ）は、その端面図、第１３図及び第１
４図は、本発明の第４の実施例を示すもので、第１３図
は、光ファイバの端部を熱伝導率の大きな材料で形成し
た治具に載置し、ヒータによって所定形状に加工する状
態の図、第１４図は、Ｆ記加工後の光ファイバめ端部の
平面図及びＡ−Ａ、Ｂ−Ｂ、Ｃ−Ｃ線に沿う断面図、第
１５図及び第１６図は、本発明の第５の実施例を示すも
ので、第１５図は、光ファイバを熱伝導率の異なる材料
を組み合せて形成した治゛具に載置し、ヒータな移動さ
せ所定形状に加工する状態を示す図、第１６図は、前記
加工後の光フフイバの端部を示す平面図及びＡ−Ａ、Ｂ
−Ｂ、Ｃ−Ｃ，Ｄ−Ｄ線に沿う断面図、第１７図（イ）
、（ロ）は、本発明の第６の実施例を示し、同図（イ）
は、光ファイバの端部の配列状態を示す端面図、同図（
ロ）は、熱融着後の端面図な示す。
１、５．１０．１１−・・光ファイバ、１ａ・・・端
部、 ２・・Ｖブロック、３．８・・・Ｖ 溝、
４．９ ゛°°ヒータ、７・・・治 具
出願代理人 弁理士 菊 池・・五 部間 山田明信
Ｊｌｙ ｔｏ 図
（イ） ｃａ
）４ １４ 図
％ １５ 關1 to 5 show a first embodiment of the present invention,
Figure 1 is a diagram showing a method of processing the end of an optical fiber, Figure 2
The figure is a perspective view of the V block on which the end part is placed, and FIG. 3 is a plan view of the end part of the optical fiber after processing, and A-A, B
4 (A) and 4 (B) are cross-sectional views taken along the lines B and C-C. Figure 5 is a plan view and A-A, B-B, C-C, D-D when a light distributor is formed.
The cross-sectional views along the line, Figures 6 and 7 (a) and (b), are
Embodiment 2 of the present invention is shown, FIG. 6 is a diagram showing a method of processing the end of an optical fiber, FIG. 7 is a diagram showing the arrangement of the end, and FIG. , a diagram showing the state after melting,
Figures 8 to 12 (a) and (b) show the third embodiment of the present invention.
FIG. 8 is a diagram showing a method of processing the end portion of an optical fiber, and FIG. 9 is an end view after the above-mentioned processing.
FIG. 10 is a perspective view of the V block when the above processing is performed, and FIG. 11(a) is a plan view and A-A showing the end of the optical fiber after the processing. 12 (a) and (b) are cross-sectional views taken along lines B-B and C-C, FIG. 12 (b) is an end view of the optical fiber, and FIGS. , a plan view of the heat-sealed state, and the same figure (b) is an end view, FIG. 13, and FIG.
Figure 4 shows a fourth embodiment of the present invention, and Figure 13 shows the end of an optical fiber placed on a jig made of a material with high thermal conductivity and processed into a predetermined shape by a heater. FIG. 14 is a plan view of the female end of the optical fiber after processing F, and sectional views taken along lines A-A, B-B, and C-C, and FIGS. 15 and 16 are This shows the fifth embodiment of the present invention, and FIG. 15 shows a state in which an optical fiber is placed on a jig made of a combination of materials with different thermal conductivities and processed into a predetermined shape by moving it using a heater. FIG. 16 is a plan view showing the end of the optical fiber after the processing, and A-A and B--B.
- Cross-sectional view along lines B, C-C, and D-D, Figure 17 (A)
, (B) shows the sixth embodiment of the present invention, and (A) of the same figure shows the sixth embodiment of the present invention.
is an end view showing the arrangement of the ends of optical fibers;
B) shows an end view after heat fusion. 1, 5.10.11--Optical fiber, 1a... end
Part, 2...V block, 3.8...V groove,
4.9゛°°Heater, 7...Jig Application agent Patent attorney Kikuchi...5 Department Akinobu Yamada Jly to Figure (A) ca
)4 14 Figure% 15 關
Claims (1)
々の端部なあらかじめ一定の中心角を有するような形状
に成形加工し、とれらの端部を互いに密着するように配
列して熱融着させ、それら全体をテーパ加工した後、接
続すべき他方の光ファイバと接続することを特徴とする
光分配器の製造方法。In manufacturing the light distributor, the ends of the seven eyepieces to be collected are shaped in advance into a shape with a certain central angle, and the ends are arranged so that they are in close contact with each other and heated. 1. A method of manufacturing an optical distributor, which comprises fusing them together, tapering the entire fiber, and then connecting it to the other optical fiber to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3625582A JPS58153916A (en) | 1982-03-08 | 1982-03-08 | Production for optical distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3625582A JPS58153916A (en) | 1982-03-08 | 1982-03-08 | Production for optical distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58153916A true JPS58153916A (en) | 1983-09-13 |
Family
ID=12464658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3625582A Pending JPS58153916A (en) | 1982-03-08 | 1982-03-08 | Production for optical distributor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58153916A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6227707A (en) * | 1985-07-30 | 1987-02-05 | Showa Electric Wire & Cable Co Ltd | Production of optical distributor |
| JPH02144466U (en) * | 1989-05-11 | 1990-12-07 | ||
| JPH03160404A (en) * | 1989-11-20 | 1991-07-10 | Nippon Telegr & Teleph Corp <Ntt> | Apparatus for producing optical fiber coupler |
| US5129021A (en) * | 1988-07-12 | 1992-07-07 | British Telecommunications Public Limited Company | Optical star couplers |
| US5408554A (en) * | 1993-12-17 | 1995-04-18 | Porta System Corporation | Fiber optic coupling |
| EP1067413A1 (en) * | 1999-07-05 | 2001-01-10 | Alps Electric Co., Ltd. | Optical coupling device |
| JP2002531867A (en) * | 1998-12-02 | 2002-09-24 | スリーエム イノベイティブ プロパティズ カンパニー | Illumination device and method of manufacturing the same |
| JP2003524200A (en) * | 2000-02-03 | 2003-08-12 | スリーエム イノベイティブ プロパティズ カンパニー | Coupler that transmits and distributes light to multiple locations with uniform color and intensity |
-
1982
- 1982-03-08 JP JP3625582A patent/JPS58153916A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6227707A (en) * | 1985-07-30 | 1987-02-05 | Showa Electric Wire & Cable Co Ltd | Production of optical distributor |
| US5129021A (en) * | 1988-07-12 | 1992-07-07 | British Telecommunications Public Limited Company | Optical star couplers |
| JPH02144466U (en) * | 1989-05-11 | 1990-12-07 | ||
| JPH03160404A (en) * | 1989-11-20 | 1991-07-10 | Nippon Telegr & Teleph Corp <Ntt> | Apparatus for producing optical fiber coupler |
| US5408554A (en) * | 1993-12-17 | 1995-04-18 | Porta System Corporation | Fiber optic coupling |
| JP2002531867A (en) * | 1998-12-02 | 2002-09-24 | スリーエム イノベイティブ プロパティズ カンパニー | Illumination device and method of manufacturing the same |
| EP1067413A1 (en) * | 1999-07-05 | 2001-01-10 | Alps Electric Co., Ltd. | Optical coupling device |
| JP2003524200A (en) * | 2000-02-03 | 2003-08-12 | スリーエム イノベイティブ プロパティズ カンパニー | Coupler that transmits and distributes light to multiple locations with uniform color and intensity |
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