JPS6227707A - Production of optical distributor - Google Patents
Production of optical distributorInfo
- Publication number
- JPS6227707A JPS6227707A JP16823885A JP16823885A JPS6227707A JP S6227707 A JPS6227707 A JP S6227707A JP 16823885 A JP16823885 A JP 16823885A JP 16823885 A JP16823885 A JP 16823885A JP S6227707 A JPS6227707 A JP S6227707A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- optical
- strands
- contact
- close
- 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 description 36
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000013307 optical fiber Substances 0.000 claims abstract description 101
- 238000005253 cladding Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims 1
- 239000011247 coating layer Substances 0.000 abstract description 7
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 230000004927 fusion Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 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
- G02B6/2856—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 formed or shaped by thermal heating means, e.g. splitting, branching and/or combining elements
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】
（発明の技術分野）
未発明は、光ファイバ通信に用いられる光分配器の製造
方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a method of manufacturing an optical splitter used in optical fiber communications.
（発明の技術的背景）
光分配器として、複数の光ファイバ心線を束ねて各心線
から伸長する光ファイバ素線を側面接触させ、かつこれ
ら光ファイバ素線を側面融着してテーパ引きすることに
より形成したテーパ状融着部を有するものが知られてお
り、このテーパ状融着部に入射ファイバ若しくは他のテ
ーパ状融着部を光結合し、これにより多ボート光分配器
として光通信に利用している。(Technical Background of the Invention) As an optical distributor, a plurality of optical fibers are bundled and the optical fibers extending from each core are brought into side contact, and these optical fibers are laterally fused and tapered. It is known to have a tapered fused part formed by this process, and an input fiber or other tapered fused part is optically coupled to this tapered fused part, thereby making it possible to use it as a multi-boat optical distributor. It is used for communication.
ところで、７ポートや１３ボートの光分配器を製造する
場合には、通常、７本若しくは１３木の光ファイバ心線
を最密充填すべく六方稠密に並べて東ね、かつ各光ファ
イ／へ心線から伸長するそれぞれの光ファイバ素線も六
方稠密に側面接触させた上でＬ述のテーパ状融着部を形
成している。そして、このように光ファイバ素線を六方
稠密に側面接触させると、光ファイバ素線の配列を崩す
ことなく側面融着及びテーパ引きを行うことができるの
で、断面円形のテーパ状融着部を得ることができる。従
って、この融着部を有する光分配器においては、融着部
が断面円形であることから、入射光ファイノ＜やテーパ
状融着部と同軸的に光結合することができる。よって、
入射されてきた光を均等に分配することができる上に光
接続損失の小さい光分配器が得られる。By the way, when manufacturing a 7-port or 13-boat optical splitter, normally 7 or 13 optical fibers are lined up in a hexagonal pattern for closest packing, and each optical fiber is connected to the center. The respective optical fiber strands extending from the wire are also brought into side contact in a hexagonal dense manner to form a tapered fused portion as described in L. When the optical fibers are brought into hexagonal dense side contact in this way, side fusion and tapering can be performed without disrupting the arrangement of the optical fibers, so a tapered fused portion with a circular cross section can be formed. Obtainable. Therefore, in the optical distributor having this fused portion, since the fused portion has a circular cross section, it is possible to optically couple the incident optical fiber coaxially with the incident optical fiber and the tapered fused portion. Therefore,
An optical distributor that can evenly distribute incident light and has low optical connection loss can be obtained.
（背景技術の問題点）
これに対して、６ポートや９ボート若しくは１０ボート
の光分配器では、６木、９本若しくは１０本の光ファイ
バ心線が用いられるので、これらの各心線から伸長する
光ファイバ素線を最密に側面接触させることは不可能で
ある。従って、光ファイバ素線の側面融着時及びテーパ
引き作業時には素線の配列が崩れ又それに伴って素線に
捩れや曲げが加わってしまうことがある。このため、機
械的強度が劣るだけでなく、変形したテーパ状融着部が
形成されることから、光接続損失の大きい光分配器が得
られてしまう。(Problems in the Background Art) On the other hand, in a 6-port, 9-boat, or 10-boat optical splitter, 6, 9, or 10 optical fibers are used, so that It is impossible to bring the elongated optical fibers into close side contact. Therefore, during side fusion of optical fiber strands and tapering operations, the alignment of the strands may be disrupted, and the strands may be twisted or bent accordingly. For this reason, not only is the mechanical strength inferior, but also a deformed tapered fused portion is formed, resulting in an optical distributor with a large optical connection loss.
（発明の目的）
本発明の目的は、機械的強度に優れ、かつ光を低損失で
分配することができる光分配器の製造方法を提供するこ
とにある。(Objective of the Invention) An object of the present invention is to provide a method for manufacturing an optical distributor that has excellent mechanical strength and can distribute light with low loss.
（発明の概要）
本発明は、非最密接触本数の光ファイバ素線の少なくと
も一本にクラッド径のみが相違する密着用光ファイバ素
線を同軸的に熱融着すると共に他の光ファイバ素線と密
着用光ファイバ素線の両者を最密に側面接触させ、側面
融着及びテーパ引きすることを特徴とする。(Summary of the Invention) The present invention coaxially heat-seals a contacting optical fiber strand that differs only in cladding diameter to at least one of the number of optical fiber strands in non-close contact, and at the same time It is characterized in that both the wire and the optical fiber for adhesion are brought into close side contact with each other, and the sides are fused and tapered.
（発明の実施例）
以下、本発明の実施例を図面を参照して詳細に説明する
。(Embodiments of the Invention) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
先ず、第１図（Ａ）、（Ｂ）に示すように、６本の石英
製光ファイバ心線１及び１′を用意する。これらの光フ
ァイバ心線１及び１′は、外径が１５０ｇｍの光ファイ
バ素線２．２′と、各光ファイバ素線２．２′上に２５
０ ｇｍの肉厚で被覆されている一次被覆層３．３′と
一次被覆層上に更に押出被覆されているポリアミド樹脂
から成る二次被覆層４．４′とから成り、０．９ｍｍの
外径を有している。各光ファイバ素線２．２′は、５０
ｇｍの径を有するコア２ａ、２’ａと外径が１５０ ｇ
ｍのクラッド２ｂ、２′ｂから成る。また、第２図（Ａ
）、ＣＢ）に示すように、密着用光ファイ／へ素線５を
用意する。この密着用光ファイバ素線５は５０ｇｍの径
を有するコア５ａと外径が９３ｇｍのクラフト５ｂとか
ら成る。First, as shown in FIGS. 1A and 1B, six quartz optical fiber cores 1 and 1' are prepared. These optical fibers 1 and 1' are composed of an optical fiber strand 2.2' having an outer diameter of 150 gm, and a 250 gm optical fiber strand 2.2' on each optical fiber strand 2.2'.
It consists of a primary coating layer 3.3' coated with a wall thickness of 0 gm and a secondary coating layer 4.4' made of polyamide resin which is further extrusion coated on the primary coating layer, with an external thickness of 0.9 mm. It has a diameter. Each optical fiber strand 2.2' has 50
Cores 2a, 2'a with a diameter of gm and an outer diameter of 150 g
It consists of m claddings 2b and 2'b. In addition, Fig. 2 (A
), CB), a contact optical fiber/strand wire 5 is prepared. This optical fiber strand 5 for adhesion consists of a core 5a having a diameter of 50 gm and a craft 5b having an outer diameter of 93 gm.
次に、各光ファイバ心線１．１′端末の一次被覆層３，
３′及び二次被覆層４．４′を除去し。Next, the primary coating layer 3,
3' and secondary coating layer 4.4' are removed.
第１図（Ａ）に示すように、それぞれの光ファイ八素線
２．２′を露出させる。As shown in FIG. 1(A), each optical fiber 8 strand 2.2' is exposed.
次いで、光ファイバ心線１′から露出して伸長している
光ファイバ素線２′のみを切断して他の光ファイバ心線
ｌの光ファイバ素線２よりも短尺化すると共に、この切
断した光ファイバ素線２′の端面に密着用光ファイバ素
線５の端面を突き合わせ、第３図に示すように、これら
素線２′及び５を同軸的に熱融着する。Next, only the optical fiber strand 2' exposed and extending from the optical fiber core 1' is cut to make it shorter than the optical fiber strand 2 of the other optical fiber core 1', and this cut The end face of the optical fiber strand 5 for adhesion is abutted against the end face of the optical fiber strand 2', and as shown in FIG. 3, these strands 2' and 5 are coaxially heat-sealed.
そして、次に、第１図（Ａ）、（Ｂ）に示すように、光
ファイバ心線１′を中央に位置させてその周面に他の光
フフイ／へ心線１を配設し、各光ファイアへ心線ｌ及び
１′の二次被覆層４．４′を相互に固着する。二次被覆
層４．４′相互の固着はエポキシ樹脂等の接着剤を用い
又は加熱融着により行う。Then, as shown in FIGS. 1(A) and 1(B), the optical fiber core 1' is positioned at the center, and the core wire 1 is arranged around the circumferential surface of the optical fiber 1' to other optical fibers. The secondary coatings 4.4' of the cores 1 and 1' are bonded to each other to each optical fire. The secondary coating layers 4, 4' are fixed to each other using an adhesive such as an epoxy resin or by heat fusing.
光ファイバ心線ｌ及び１′を固着した後には、第４図（
Ａ）、（Ｂ）に示すように、光ファイバ素線２′に接続
した密着用光ファイバ素線５を中央に位置させた状態で
当該密着用光ファイバ素線５及び各光ファイバ素線２を
紐等により束ね、相互に密着させる。ところで、密着用
光ファイバ素線５は９３ｇｍの外径を有し、他の光ファ
イバ素線２（又は２′）よりも小径である。従って、こ
の密着用光ファイバ素線５を中央に位置させて他の光フ
ァイバ素線２と共に束ねると、第４図（Ｂ）に示すよう
に、これらの光ファイバ素線５及び２は最密に側面接触
する。尚、密着用光ファイバ素線５を中央に位置させて
他の光ファイバ素ｖｊ、２と共に紐により端末側を緩く
束ね、これら素線に振動を付与した後紐により強く束ね
ると、上述したように、これら素線５及び２が最密に側
面接触する。After fixing the optical fibers l and 1', as shown in Fig. 4 (
As shown in A) and (B), the contact optical fiber 5 and each optical fiber 2 are placed in the center with the contact optical fiber 5 connected to the optical fiber 2' Bundle them with string or the like and make them stick to each other. By the way, the optical fiber strand 5 for adhesion has an outer diameter of 93 gm, which is smaller in diameter than the other optical fiber strands 2 (or 2'). Therefore, when this optical fiber strand 5 for adhesion is placed in the center and bundled together with other optical fiber strands 2, these optical fiber strands 5 and 2 will be in the closest density as shown in FIG. 4(B). side contact. In addition, if the optical fiber strand 5 for adhesion is located in the center and the terminal side is loosely bundled together with other optical fiber elements vj, 2 with a string, and after applying vibration to these strands, they are tightly bundled with the string, as described above. These strands 5 and 2 are in close side contact with each other.
このように、密着用光ファイバ素線５を介して光ファイ
バ素線２を最密に密着させた後には、これら素線の端末
周面を加熱して側面融着する。そして、側面融着した端
末をクランプし、加熱しながら軸方向にテーパ引きして
徐々に小径化し、第５図（Ａ）に示すように、テーパ状
融着部６を形成する。After the optical fiber strands 2 are brought into close contact with each other through the contact optical fiber strand 5 in this way, the peripheral surfaces of the ends of these strands are heated to perform side fusion bonding. Then, the side fused end is clamped and tapered in the axial direction while heating to gradually reduce the diameter, thereby forming a tapered fused portion 6 as shown in FIG. 5(A).
最後に、テーパ状融着部６を適当な直径位置で切断して
入射光ファイバ素線７と同径の端面を設け、第５図（Ａ
）に示すように、このテーパ状融着部６と入射光ファイ
バ素線７とを突き合わせ接続し、これにより６ボートの
光分配器を得る。Finally, the tapered fused portion 6 is cut at an appropriate diameter position to provide an end face with the same diameter as the input optical fiber strand 7, as shown in FIG.
), the tapered fused portion 6 and the input optical fiber strand 7 are butt-connected, thereby obtaining a six-boat optical distributor.
」二足製造方法においては、クラッド径の小さい密着用
光ファイバ素線５を中央に位置させているので、北記し
たように、当該素線５及び他の三木の光ファイバ素線２
は相互に最密に側面接触する。従って、その後に側面融
着及びテーパ引き作業を行っても光ファイバ素線２に配
列崩れが生じることがない。従って、テーパ状融着部６
は、第５図（Ｂ）に示すように、確実に断面円形に形成
される。また、クラッド径の小さい密着用光ファイバ素
線５を用いているので、テーパ状融着部６でのコア占有
率が白土する。よって、光接続損失の小さい光分配器が
得られる。更に、光ファイバ素線２に捩れや曲げが加わ
ることがないので、傷笠が付与されても簡単にクラック
や破断が生じることがない。In the two-leg manufacturing method, since the adhesion optical fiber strand 5 with a small cladding diameter is located in the center, as mentioned above, the strand 5 and other Miki optical fiber strands 2
are in close lateral contact with each other. Therefore, even if side fusion bonding and tapering operations are performed thereafter, the alignment of the optical fiber strands 2 will not be disrupted. Therefore, the tapered fused portion 6
As shown in FIG. 5(B), the cross section is reliably formed into a circular shape. Furthermore, since the adhesion optical fiber strand 5 having a small cladding diameter is used, the core occupation rate in the tapered fused portion 6 is small. Therefore, an optical splitter with low optical connection loss can be obtained. Furthermore, since the optical fiber strand 2 is not twisted or bent, it will not easily crack or break even if it is damaged.
ところで、上記製造方法により得た光分配器を５個試料
として用い、これら試料の光接続損失を測定した。この
測定には光源として波長８６０ｎｍのＬＥＤと光パワー
メータを用いた。測定結果を下記表に示す。Incidentally, five optical distributors obtained by the above manufacturing method were used as samples, and the optical connection loss of these samples was measured. In this measurement, an LED with a wavelength of 860 nm and an optical power meter were used as a light source. The measurement results are shown in the table below.
比較のために、従来の製造方法、即ち、第１図に示す六
本の光ファイバ素線を直接的に束ね、側面融着及びテー
パ引きにより製作した光分配器を試料として５個用意し
、これら試料の光接続損失を同様に測定した。この測定
結果も下記表に示す。For comparison, we prepared five samples of optical distributors manufactured using the conventional manufacturing method, that is, by directly bundling six optical fiber strands shown in FIG. 1, side fusion welding, and tapering. The optical connection loss of these samples was measured in the same manner. The measurement results are also shown in the table below.
表
栄位（ｄＢ）
丘記表から明らかなように、比較例の光分配器は・Ｖ均
の光接続損失が９．５ｄＢ、損失ばらつき幅（置火光接
続損失と最小光接続損失の差）が１゜３ｄＢであった。Table of Contents (dB) As is clear from the table, the optical splitter of the comparative example has a V average optical connection loss of 9.5 dB, and loss variation width (difference between optical connection loss and minimum optical connection loss). was 1°3dB.
これに対して、本実施例の光分配器は平均の光接続損失
が８．６ｄＢ、損失ばらつきが０．６ｄＢであった。こ
のように、本発明の光分配器は光接続損失が小さく、又
特性的にも安定している。On the other hand, the optical splitter of this example had an average optical connection loss of 8.6 dB and a loss variation of 0.6 dB. As described above, the optical distributor of the present invention has low optical connection loss and stable characteristics.
第６図には９ボートの光分配器の製造例が示されている
。即ち、この場合には、三本の光ファイバ素線２′ （
第３図参照）にそれぞれクラッド径が８１ルｍの密着用
光ファイバ素線５′を同軸的に接続し、これら三木の密
着用光ファイバ素線５′を中央に位置させた状態で当該
東線５′及び他の六本の光ファイバ素線２を相互に密着
させる。FIG. 6 shows an example of manufacturing a nine-boat optical distributor. That is, in this case, three optical fiber strands 2' (
(See Fig. 3) are coaxially connected to the contact optical fibers 5' with a cladding diameter of 81 lm, and with these Miki contact optical fibers 5' located in the center, The wire 5' and the other six optical fiber strands 2 are brought into close contact with each other.
従って、この場合にもこれらのファイバ素線２及び５′
が最密に側面接触するの゛で、東線間で配列崩れを生じ
させることなくテーパ状融着部を形成することができる
。Therefore, in this case as well, these fiber strands 2 and 5'
Since the sides are in close contact with each other, it is possible to form a tapered fused portion without causing any alignment collapse between the east lines.
第７図には９ポートの光分配器の他の製造例が示されて
いる。この場合には、二本の光ファイバ素線２′ （第
３図参照）に、上記小径の密着用光ファイバ素線５′及
びクラッド径が２２５ｇｍの大径の密着用光ファイバ素
線８をそれぞれ同軸的に接続する。そして、大径の密着
用光ファイバ素線８を中央に位置させた状態で当該素線
８．小径の密着用光ファイ／へ素線５′及び他の七本の
光ファイバ素線２を相互に密着させる。従って、この場
合にもこれらの光ファイバ素線がｆＩｌ密に側面接触す
る。FIG. 7 shows another manufacturing example of a 9-port optical distributor. In this case, the small-diameter contact optical fiber 5' and the large-diameter contact optical fiber 8 with a cladding diameter of 225 gm are attached to the two optical fibers 2' (see Figure 3). Each is connected coaxially. Then, with the large-diameter contact optical fiber strand 8 positioned at the center, the strand 8. The small-diameter optical fiber/strand strand 5' for contacting and the other seven optical fiber strands 2 are brought into close contact with each other. Therefore, in this case as well, these optical fiber strands are in close side contact with each other.
尚、他の非＠密接触本数の光ファイ／へ素線であっても
クラッド径の相違する密着用光ファイバ素線を適宜組み
合わせることで素線相互を最密に側面接触させ得るのは
勿論である。It is of course possible to bring the strands into close side contact with each other by appropriately combining optical fiber strands with different cladding diameters, even for other optical fibers/strands with non-close contact numbers. It is.
（発明の効果）
本発明によれば、＃−最密接触の不可能な本数の光ファ
イバ素線を、クラッド径の異なる密着用光ファイバ東線
を用いて相互に最密に側面接触させるようにしたことで
、密着用光ファイバ素線を含む光ファイバ素線を配列崩
れを生じさせることなく側面融着及びテーパ引きするこ
とができる。(Effects of the Invention) According to the present invention, a number of optical fiber strands for which close contact is not possible are brought into close side contact with each other using close optical fiber east wires having different cladding diameters. By doing so, it is possible to side-fuse and taper the optical fiber strands including the optical fiber strands for adhesion without causing any arrangement collapse.
従って、光接続損失が少なく、しかも機械的強度の優れ
た光分配器を提供することができる。Therefore, it is possible to provide an optical distributor with low optical connection loss and excellent mechanical strength.
第１図（Ａ）、（Ｂ）は光ファイバ心線を固着した状態
を示す正面図とそのＡ−Ａ線断面図、第２図（Ａ）、（
Ｂ）は密着用光ファイバ素線の正面図と断面図、第３図
は光ファイバ素線に第２図の密着用光ファイ／へ素線を
接続した状態を示す正面図、第４図（Ａ）、（Ｂ）は光
ファイバ素線の側面接触状態を示す正面図と端面図、第
５図（Ａ）、（Ｂ）は本発明方法により製造した光分配
器の正面図とそのＢ−Ｂ線断面図、第６図及び第７図は
本発明の他の実施例における光ファイバ素線の側面接触
状態をそれぞれ示す端面図である。
１．１′−−−−−一光ファイバ心線、２．２ ′−−
−−−−光ファイハ素線、５．５’、８−−−一密着用
光ファイバ素線、６−−−−−−−−−テーパ状融着部
。
第１ス
（Ａ）
（Ｂ）
第２図
ｓｂ−＠−５０
５−−−−−一密着用光７アイ八素線
第３図
１′
第４図
（Ａ）
第５図
（〜
（Ｂ）
ＷＥ ６ ｒＡＨ７ｒＸＪ
手 続 補 正 書 （瞳
昭和２ρ年ヲ月２乙日
特許庁長官 宇買 退部 殿 へ。
［
１事件の表示
昭和６０年特許願第１６８２３８号
２発明の名称
光分配器の製造方法
３補正をする者
事件との関係 特許出願人
川崎市川崎区小田栄２丁目１番１号
（２２５）昭和電線電纜株式会社
代表者 吉 雄 稔 彦
４代 理 人
川崎市川崎区小田栄２丁目１番１号
６補正の対象
明細書の発明の詳細な説明の欄。
７補正の内容
明細書の第２頁第８行および第９行の「１３」を「１９
」と補正する。
以 上Figures 1 (A) and (B) are a front view and a cross-sectional view taken along the line A-A of the optical fiber core, and Figures 2 (A) and (
B) is a front view and a sectional view of the optical fiber for adhesion, FIG. 3 is a front view showing the state in which the optical fiber is connected to the optical fiber for adhesion in FIG. A) and (B) are a front view and an end view showing the side contact state of the optical fiber strands, and FIGS. 5A and 5B are a front view and its B- A sectional view taken along the line B, and FIGS. 6 and 7 are end views respectively showing the side surface contact state of the optical fiber strand in other embodiments of the present invention. 1.1'-----One optical fiber, 2.2'--
--- Optical fiber wire, 5.5', 8 --- Optical fiber wire for close contact, 6 --- Tapered fused portion. 1st stage (A) (B) Fig. 2 sb-@-50 5-----One contact light 7-eye 8 element wire Fig. 3 1' Fig. 4 (A) Fig. 5 (~ (B ) WE 6 rAH7rXJ Procedural Amendment (To Mr. Hitomi Uchibe, Commissioner of the Japan Patent Office, April 2, 1949. [1. Display of the case 1985 Patent Application No. 168238 2. Name of the invention Optical distributor Relationship with the case of the person making the amendment to manufacturing method 3 Patent applicant 2-1-1 Oda Sakae, Kawasaki-ku, Kawasaki City (225) Showa Electric Wire and Wire Co., Ltd. Representative Minoru Yoshiko 4th generation Director Oda Sakae, Kawasaki-ku, Kawasaki City 2-chome-1-1 No. 6 Detailed description of the invention in the specification subject to amendment
” he corrected. that's all
Claims (1)
せて側面融着し、テーパ引きしてテーパ状融着部を形成
する光分配器の製造方法において、前記少なくとも一本
の光ファイバ素線にクラッド径のみが異なる密着用光フ
ァイバ素線を同軸的に熱融着し、該他の各光ファイバ素
線を該密着用光ファイバ素線を介して最密に側面接触さ
せた後これら他の各光ファイバ素線及び密着用光ファイ
バ素線を一体的に側面融着し、テーパ引きすることを特
徴とする光分配器の製造方法。In the method for manufacturing an optical distributor, the at least one optical fiber is brought into side contact with each other, side fused, and tapered to form a tapered fused portion. After coaxially heat-sealing the optical fiber strands for adhesion with different cladding diameters to the strands, and bringing the other optical fibers into close side contact via the strands of optical fibers for adhesion, A method for manufacturing an optical distributor, characterized in that each of these other optical fiber strands and the adhesion optical fiber strand are integrally fused on the sides and tapered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16823885A JPS6227707A (en) | 1985-07-30 | 1985-07-30 | Production of optical distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16823885A JPS6227707A (en) | 1985-07-30 | 1985-07-30 | Production of optical distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6227707A true JPS6227707A (en) | 1987-02-05 |
Family
ID=15864328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16823885A Pending JPS6227707A (en) | 1985-07-30 | 1985-07-30 | Production of optical distributor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6227707A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0694174A1 (en) * | 1993-04-06 | 1996-01-31 | Porta Systems Corporation | Fiberoptic coupling |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5525063A (en) * | 1978-08-11 | 1980-02-22 | Mitsubishi Electric Corp | Photo multiple distributing device |
| JPS58153916A (en) * | 1982-03-08 | 1983-09-13 | Showa Electric Wire & Cable Co Ltd | Production for optical distributor |
-
1985
- 1985-07-30 JP JP16823885A patent/JPS6227707A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5525063A (en) * | 1978-08-11 | 1980-02-22 | Mitsubishi Electric Corp | Photo multiple distributing device |
| JPS58153916A (en) * | 1982-03-08 | 1983-09-13 | Showa Electric Wire & Cable Co Ltd | Production for optical distributor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0694174A1 (en) * | 1993-04-06 | 1996-01-31 | Porta Systems Corporation | Fiberoptic coupling |
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