JPS6230603B2 - - Google Patents
Info
- Publication number
- JPS6230603B2 JPS6230603B2 JP1145083A JP1145083A JPS6230603B2 JP S6230603 B2 JPS6230603 B2 JP S6230603B2 JP 1145083 A JP1145083 A JP 1145083A JP 1145083 A JP1145083 A JP 1145083A JP S6230603 B2 JPS6230603 B2 JP S6230603B2
- Authority
- JP
- Japan
- Prior art keywords
- optical
- terminal
- switching connector
- fiber core
- optical cable
- 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
Links
- 230000003287 optical effect Effects 0.000 claims description 72
- 239000013307 optical fiber Substances 0.000 claims description 31
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 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
-
- 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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
-
- 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
- G02B6/35—Optical coupling means having switching means
- G02B6/3502—Optical coupling means having switching means involving direct waveguide displacement, e.g. cantilever type waveguide displacement involving waveguide bending, or displacing an interposed waveguide between stationary waveguides
-
- 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
- G02B6/35—Optical coupling means having switching means
- G02B6/354—Switching arrangements, i.e. number of input/output ports and interconnection types
- G02B6/3562—Switch of the bypass type, i.e. enabling a change of path in a network, e.g. to bypass a failed element in the network
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Electric Cable Installation (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Description
【発明の詳細な説明】
本発明は光ケーブルの切替えを容易に行える切
替接続器を用いた光ケーブル線路に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical cable line using a switching connector that can easily switch optical cables.
市内線路においては、設備更新、分局開始、ユ
ニツト増及び都市整備計画に伴うルート変更等の
整備取替え工事が常時頻繁に発生しており、その
たびにケーブル切替え工事が行われている。ケー
ブルの回線切替えは無瞬断で行う必要があるた
め、切替え時には２重回線をとつて、これに対処
している。メタルケーブルの場合は、絶縁心線の
心線被覆を除去して心線導体を露出させれば、回
線を活かしたまま容易に分岐接続ができ、２重回
線の形成を容易に行うことができた。 On city lines, maintenance and replacement work such as equipment renewal, opening of branch stations, increase in units, and route changes due to urban development plans occurs frequently, and cable switching work is carried out each time. Since cable line switching must be performed without momentary interruptions, double lines are used to cope with this problem. In the case of metal cables, by removing the core sheath of the insulated core wire to expose the core conductor, branch connections can be easily made while keeping the circuit intact, making it easy to form double circuits. Ta.
しかしながら、光ケーブルの場合には、光フア
イバ心線のコアの側面同志を接触させても導通が
得られないので、回線を活かしたまま２重回線を
とることはメタルケーブルのようには簡単にはい
かない。この点が光ケーブルの大きい欠点であ
る。 However, in the case of optical cables, continuity cannot be obtained even if the sides of the cores of the optical fibers are brought into contact with each other, so it is not as easy to create a double line while keeping the line alive as it is with metal cables. It's fleeting. This point is a major drawback of optical cables.
本発明の目的は、光ケーブルの切替えに容易に
対処できる切替接続器を用いた光ケーブル線路を
提供するにある。 An object of the present invention is to provide an optical cable line using a switching connector that can easily handle switching of optical cables.
本発明に係る切替接続器を用いた光ケーブル線
路は、所要のルートに布設された光ケーブルの適
宜長さ毎に該光ケーブルの各光フアイバ心線に対
して予め切替接続器がそれぞれ接続され、前記各
切替接続器は一端側に入力された光信号の一部が
他端側に直接伝達される関係にある第１、第２の
端子と、前記第１の端子に入つた光信号の一部が
分岐されて取出される関係にある第３の端子と、
前記第２の端子に入つた光信号の一部が分岐され
て取出される関係にある第４の端子とをもち、前
記第１、第２の端子には両側の光ケーブルの接続
すべき前記光フアイバ心線がそれぞれ接続され、
前記第３、第４の端子間はジヤンパー光フアイバ
心線で相互に接続されていることを特徴とするも
のである。 In an optical cable line using a switching connector according to the present invention, a switching connector is connected in advance to each optical fiber core of the optical cable for each appropriate length of the optical cable laid on a required route, and each of the above-mentioned The switching connector has first and second terminals in which a part of the optical signal input to one end is directly transmitted to the other end, and a part of the optical signal input to the first terminal is directly transmitted to the other end. a third terminal that is branched and taken out;
It has a fourth terminal in which a part of the optical signal input to the second terminal is branched and taken out, and the optical signal to be connected to the optical cables on both sides is connected to the first and second terminals. The fiber cores are connected to each other,
The third and fourth terminals are connected to each other by a jumper optical fiber.
以下本発明の実施例を図面を参照して詳細に説
明する。第１図は本発明に係る切替接続器を用い
た光ケーブル線路の第１実施例を示したものであ
る。図示のように所要のルートに布設された光ケ
ーブル１の適宜長さ毎に該光ケーブル１の各光フ
アイバ心線２に対して予め切替接続器３がそれぞ
れ接続されている。各切替接続器３は一端側に入
力された光信号の一部が他端側の直接伝達される
関係にある第１、第２の端子３Ａ，３Ｂと、第１
の端子３Ａに入つた光信号の一部が分岐されて取
出される関係にある第３の端子３Ｃと、第２の端
子３Ｂに入つた光信号の一部が分岐されて取出さ
れる関係にある第４の端子３Ｄとをもつて構成さ
れている。特に、本実施例の切替接続器３は、２
組のＹ字状分岐光フアイバ心線４，５を用い、２
分岐部分を対応する各端子に接続し、幹部分を相
互に接続した構造としている。これら切替接続器
３は、第１、第２の端子３Ａ，３Ｂが両側の光ケ
ーブル１の接続すべき光フアイバ心線２にそれぞ
れ接続され、第３、第４の端子３Ｃ，３Ｄ間はジ
ヤンパー光フアイバ心線６で相互に接続されてい
る。 Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows a first embodiment of an optical cable line using a switching connector according to the present invention. As shown in the figure, a switching connector 3 is connected in advance to each optical fiber core 2 of the optical cable 1 for each appropriate length of the optical cable 1 installed on a required route. Each switching connector 3 has first and second terminals 3A and 3B, which are in a relationship where a part of the optical signal inputted to one end is directly transmitted to the other end, and a first
The third terminal 3C is in a relationship where a part of the optical signal that enters the terminal 3A is branched and taken out, and the third terminal 3C is in a relationship that a part of the optical signal that is entered into the second terminal 3B is branched and taken out. It is configured with a certain fourth terminal 3D. In particular, the switching connector 3 of this embodiment has two
Using a set of Y-shaped branched optical fiber core wires 4 and 5, 2
The branch parts are connected to corresponding terminals, and the trunk parts are connected to each other. These switching connectors 3 have first and second terminals 3A and 3B connected to the optical fiber cores 2 of the optical cables 1 on both sides, respectively, and a jumper light between the third and fourth terminals 3C and 3D. They are interconnected by fiber core wires 6.
このような切替接続器を用いた光ケーブル線路
においては、一方の側の光ケーブル１の光フアイ
バ心線２から第１の端子３Ａに入力された光信号
はＹ字状分岐光フアイバ心線５で２分配されて一
部は他方の側の光ケーブル１の光フアイバ心線２
に直接伝達され、２分配された残りの光信号は第
３の端子３Ｃ、ジヤンパー光フアイバ心線６、第
４の端子３Ｄ、Ｙ字状分岐光フアイバ心線４の分
岐部分を経て他方の側の光ケーブル１の光フアイ
バ心線２に再び２分配されて伝達されることにな
る。このような光信号の伝達の状態を数式で示す
と次のようになる。 In an optical cable line using such a switching connector, an optical signal input from the optical fiber core 2 of the optical cable 1 on one side to the first terminal 3A is split into two by the Y-shaped branch optical fiber core 5. A part of the optical fiber core 2 of the optical cable 1 on the other side is distributed.
The remaining optical signal, which has been divided into two, passes through the third terminal 3C, the jumper optical fiber core 6, the fourth terminal 3D, and the branch part of the Y-shaped branch optical fiber core 4 to the other side. The signal is again divided into two parts and transmitted to the optical fiber core 2 of the optical cable 1. The state of transmission of such an optical signal can be expressed mathematically as follows.
P1＝P0｛１／２＋（１／２）２＋（１／２）３＋……
｝
P2＝P1｛１／２＋（１／２）２＋（１／２）３＋……
｝
なお、P0は第１図で左側の切替接続器３に入力
される光信号、P1はこの左側の切替接続器３から
出力されて右側の切替接続器３に入力される光信
号、P2は右側の切替接続器３から出力される光信
号である。 P 1 =P 0 {1/2+(1/2) 2 +(1/2) 3 +...
} P 2 = P 1 {1/2+(1/2) 2 +(1/2) 3 +...
} In addition, P 0 is an optical signal input to the switching connector 3 on the left side in FIG. 1, P 1 is an optical signal output from this switching connector 3 on the left side and input to the switching connector 3 on the right side, P 2 is an optical signal output from the switching connector 3 on the right side.
かかる光ケーブル線路において、図示の左右の
切替接続器３の間の光ケーブル１のルート変更の
必要が生じた場合には、第２図に示すように先ず
各切替接続器３の第３、第４の端子３Ｃ，３Ｄか
らジヤンパー光フアイバ心線６を外す。このよう
にしても各切替接続器３内で２分配された信号の
一部が光ケーブル１の光フアイバ心線２に送り込
まれているので、光信号の大きさは減少されるが
瞬断されることはなく、通信が途絶えることはな
い。次いで、一方の切替接続器３の第３の端子３
Ｃと他方の切替接続器３の第４の端子３Ｄとの間
を新しい光ケーブル７の光フアイバ心線８で相互
に接続する。 In such an optical cable line, if it becomes necessary to change the route of the optical cable 1 between the left and right switching connectors 3 shown in the figure, first change the route of the optical cable 1 between the left and right switching connectors 3 as shown in FIG. Remove the jumper optical fiber core wire 6 from the terminals 3C and 3D. Even in this case, a part of the signal divided into two in each switching connector 3 is sent to the optical fiber core 2 of the optical cable 1, so the magnitude of the optical signal is reduced, but it is momentarily interrupted. There is no interruption in communication. Next, the third terminal 3 of one switching connector 3
C and the fourth terminal 3D of the other switching connector 3 are interconnected using the optical fiber core wire 8 of the new optical cable 7.
次に、第３図に示すように隣接する切替接続器
３間の光ケーブル１の光フアイバ心線２を一方の
切替接続器３の第２の端子３Ｂと他方の切替接続
器３の第１の端子３Ａから外し、次いで、一方の
切替接続器３は第２の端子３Ｂと第４の端子３Ｄ
間をジヤンパー光フアイバ心線６で相互に接続
し、他方の切替接続器３は第１の端子３Ａと第３
の端子３Ｃ間をジヤンパー光フアイバ心線６で相
互に接続する。 Next, as shown in FIG. 3, the optical fiber core 2 of the optical cable 1 between adjacent switching connectors 3 is connected between the second terminal 3B of one switching connector 3 and the first terminal 3B of the other switching connector 3. from the terminal 3A, then one switching connector 3 connects the second terminal 3B and the fourth terminal 3D.
The other switching connector 3 connects the first terminal 3A and the third terminal 3A with a jumper optical fiber core 6.
The terminals 3C of the two terminals 3C are mutually connected by a jumper optical fiber core wire 6.
この第３図に示す光ケーブル線路においては、
左側にある一方の切替接続器３は第３の端子３Ｃ
を第２の端子と考え、第２の端子３Ｂを第３の端
子と考えると、第１図に示す光ケーブル線路の一
方の切替接続器３と同じになる。また、第３図に
示す光ケーブル線路においては、右側にある他方
の切替接続器３は第４の端子３Ｄを第１の端子と
考え、第１の端子３Ａを第４の端子と考えると、
第１図に示す光ケーブル線路の他方の切替接続器
３と同じになる。 In the optical cable line shown in Fig. 3,
One switching connector 3 on the left side is the third terminal 3C
If we consider the terminal 3B to be the second terminal and the second terminal 3B to be the third terminal, it will be the same as the switching connector 3 on one side of the optical cable line shown in FIG. Further, in the optical cable line shown in FIG. 3, if the other switching connector 3 on the right side considers the fourth terminal 3D to be the first terminal and the first terminal 3A to be the fourth terminal, then
This is the same as the other switching connector 3 of the optical cable line shown in FIG.
第４図はＹ字状分岐光フアイバ心線４，５を用
いた切替接続器３の具体例を示したものである。
本実施例では、第１〜第４の端子３Ａ〜３Ｄは光
コネクタで形成し、これらをケーシング９に取付
け、ケーシング９内には前述した２組のＹ字状分
岐光フアイバ心線４，５を内蔵させ、そのまわり
をケーシング９内に充填した樹脂１０で固定した
構造としている。これに対応して光ケーブル１の
光フアイバ心線２の端部にも光コネクタ１１を接
続している。 FIG. 4 shows a specific example of the switching connector 3 using Y-shaped branched optical fiber core wires 4, 5.
In this embodiment, the first to fourth terminals 3A to 3D are formed of optical connectors and are attached to a casing 9, and inside the casing 9 are the two sets of Y-shaped branched optical fiber core wires 4, 5. is built in, and its surroundings are fixed with a resin 10 filled in a casing 9. Correspondingly, an optical connector 11 is also connected to the end of the optical fiber core 2 of the optical cable 1.
第５図は本発明に係る切替接続器を用いた光ケ
ーブル線路の第２の実施例を示したものである。
本実施例の光ケーブル線路では、切替接続器３と
してハーフミラー１２を用いたものを使用した点
で第１の実施例と相違しているが、その他の点は
同様の構成となつている。なお、第１実施例と対
応する部分には同一符号を付して示している。接
続の仕方は第１実施例と同じである。 FIG. 5 shows a second embodiment of an optical cable line using a switching connector according to the present invention.
The optical cable line of this embodiment differs from the first embodiment in that a half mirror 12 is used as the switching connector 3, but the other points have the same configuration. Note that parts corresponding to those in the first embodiment are designated by the same reference numerals. The connection method is the same as in the first embodiment.
第６図は隣接する切替接続器３の間の光ケーブ
ル１を徹去し、新しい光ケーブル７にルートを変
更した例を示したものである。ルートの変更を無
瞬断で行うやり方については第１実施例と同じで
ある。 FIG. 6 shows an example in which the optical cable 1 between adjacent switching connectors 3 is removed and the route is changed to a new optical cable 7. The method of changing the route without interruption is the same as in the first embodiment.
第７図乃至第９図はハーフミラー１２を用いた
切替接続器３の具体例を示したものである。本実
施例では、ケーシング９内の中央に断面正方形状
の角筒よりなるミラーホルダー１３をこのケーシ
ング９のボス部９Ａの嵌合により支持させ、この
ミラーホルダー１３の同一周上の４つの面に対向
させて光コネクタよりなる第１〜第４の端子３Ａ
〜３Ｄをケーシング９に貫通させて取付け、これ
ら端子３Ａ〜３Ｄに対向するケーシング９の各面
には孔１４Ａ〜１４Ｄを設け、且つこれら孔の部
分にはそれぞれレンズ１５Ａ〜１５Ｄを取付け、
且つミラーホルダー１３内には孔１４Ａと１４Ｂ
との間を横切る向きで対角線状にハーフミラー１
２を支持させた構造になつている。 7 to 9 show specific examples of the switching connector 3 using the half mirror 12. FIG. In this embodiment, a mirror holder 13 made of a rectangular tube with a square cross section is supported at the center of the casing 9 by fitting the boss portion 9A of the casing 9, and four surfaces of the mirror holder 13 on the same circumference are supported. First to fourth terminals 3A made of optical connectors facing each other
- 3D are attached to the casing 9 by penetrating them, holes 14A to 14D are provided on each surface of the casing 9 facing the terminals 3A to 3D, and lenses 15A to 15D are attached to the portions of these holes, respectively.
In addition, holes 14A and 14B are provided in the mirror holder 13.
Half mirror 1 diagonally across the
It has a structure that supports 2.
以上説明したように本発明に係る切替接続器を
用いた光ケーブル線路においては、所要のルート
に布設された光ケーブルの適宜長さ毎に該光ケー
ブルの各光フアイバ心線に対して予め切替接続器
を接続し、各切替接続器は一端側に入力された光
信号の一部が他端側に直接伝達される関係にある
第１、第２の端子と、前記第１の端子に入つた光
信号の一部が分岐されて取出される関係にある第
３の端子と、前記第２の端子に入つた光信号の一
部が分岐されて取出される関係にある第４の端子
をもつ構造としたので、隣接する切替接続器の各
ら４つの端子を使用することにより光ケーブルの
切替えを無瞬断で容易に行うことができる。ま
た、第３及び第４の端子間は通常はジヤンパー光
フアイバ心線で接続しているので、各切替接続器
での光信号の分岐損失を防止することができる。 As explained above, in the optical cable line using the switching connector according to the present invention, the switching connector is installed in advance for each optical fiber core wire of the optical cable for each appropriate length of the optical cable laid on the required route. and each switching connector has first and second terminals in which a part of the optical signal input to one end is directly transmitted to the other end, and the optical signal input to the first terminal. A structure having a third terminal in which a part of the optical signal is branched and taken out, and a fourth terminal in which a part of the optical signal inputted to the second terminal is branched and taken out. Therefore, by using each of the four terminals of adjacent switching connectors, it is possible to easily switch optical cables without momentary interruption. Furthermore, since the third and fourth terminals are usually connected by a jumper optical fiber, branching loss of the optical signal at each switching connector can be prevented.
第１図は本発明に係る切替接続器を用いた光ケ
ーブル線路の第１実施例の概略構成図、第２図及
び第３図は第１図に示す光ケーブル線路における
ルートの切替え手順を示す図、第４図は第１実施
例で用いている切替接続器の一部破断側面図、第
５図は本発明に係る切替接続器を用いた光ケーブ
ル線路の第２実施例の概略構成図、第６図は第５
図に示す光ケーブル線路におけるルートの切替え
後の状態を示す図、第７図は第２実施例で用いて
いる切替接続器の横断面図、第８図は第７図のＸ
−Ｘ線断面図、第９図はこの切替接続器で用いて
いるミラーホルダーの斜視図である。
１……光ケーブル、２……光フアイバ心線、３
……切替接続器、３Ａ……第１の端子、３Ｂ……
第２の端子、３Ｃ……第３の端子、３Ｄ……第４
の端子、４，５……Ｙ字状分岐光フアイバ心線、
６……ジヤンパー光フアイバ心線、７……光フア
イバケーブル、８……光フアイバ心線、１２……
ハーフミラー。
FIG. 1 is a schematic configuration diagram of a first embodiment of an optical cable line using a switching connector according to the present invention, FIGS. 2 and 3 are diagrams showing route switching procedures in the optical cable line shown in FIG. 1, FIG. 4 is a partially cutaway side view of the switching connector used in the first embodiment, FIG. 5 is a schematic configuration diagram of the second embodiment of the optical cable line using the switching connector according to the present invention, and FIG. The figure is number 5
Figure 7 is a cross-sectional view of the switching connector used in the second embodiment, and Figure 8 is the X in Figure 7.
- An X-ray sectional view and FIG. 9 are perspective views of a mirror holder used in this switching connector. 1... Optical cable, 2... Optical fiber core wire, 3
...Switching connector, 3A...First terminal, 3B...
Second terminal, 3C...Third terminal, 3D...Fourth terminal
terminals, 4, 5... Y-shaped branch optical fiber core wire,
6... Jumper optical fiber core wire, 7... Optical fiber cable, 8... Optical fiber core wire, 12...
Half mirror.
Claims (1)
長さ毎に該光ケーブルの各光フアイバ心線に対し
て予め切替接続器がそれぞれ接続され、前記各切
替接続器は一端側に入力された光信号の一部が他
端側に直接伝達される関係にある第１、第２の端
子と、前記第１の端子に入つた光信号の一部が分
岐されて取出される関係にある第３の端子と、前
記第２の端子に入つた光信号の一部が分岐されて
取出される関係にある第４の端子とをもち、前記
第１、第２の端子には両側の光ケーブルの接続す
べき前記光フアイバ心線がそれぞれ接続され、前
記第３、第４の端子間はジヤンパー光フアイバ心
線で相互に接続されていることを特徴とする切替
接続器を用いた光ケーブル線路。1. A switching connector is connected in advance to each optical fiber core of the optical cable for each appropriate length of the optical cable installed on a required route, and each switching connector is connected to the optical signal input to one end of the optical cable. first and second terminals in which a portion of the optical signal is directly transmitted to the other end; and a third terminal in which a portion of the optical signal that has entered the first terminal is branched and extracted. and a fourth terminal in which a part of the optical signal inputted to the second terminal is branched and taken out, and the optical cables on both sides are connected to the first and second terminals. An optical cable line using a switching connector, characterized in that the optical fiber core wires are connected to each other, and the third and fourth terminals are mutually connected by a jumper optical fiber core wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58011450A JPS59137922A (en) | 1983-01-28 | 1983-01-28 | Switching connector and optical cable line using switching connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58011450A JPS59137922A (en) | 1983-01-28 | 1983-01-28 | Switching connector and optical cable line using switching connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59137922A JPS59137922A (en) | 1984-08-08 |
| JPS6230603B2 true JPS6230603B2 (en) | 1987-07-03 |
Family
ID=11778429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58011450A Granted JPS59137922A (en) | 1983-01-28 | 1983-01-28 | Switching connector and optical cable line using switching connector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59137922A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2514646B2 (en) * | 1987-01-23 | 1996-07-10 | 株式会社フジクラ | Optical fiber cable switching connection method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS472573U (en) * | 1971-01-27 | 1972-08-29 | ||
| JPS53125854A (en) * | 1977-04-08 | 1978-11-02 | Matsushita Electric Ind Co Ltd | Optical transmission system and production therefor |
| JPS53133305A (en) * | 1977-04-27 | 1978-11-21 | Nippon Telegr & Teleph Corp <Ntt> | Optical communication system |
-
1983
- 1983-01-28 JP JP58011450A patent/JPS59137922A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS472573U (en) * | 1971-01-27 | 1972-08-29 | ||
| JPS53125854A (en) * | 1977-04-08 | 1978-11-02 | Matsushita Electric Ind Co Ltd | Optical transmission system and production therefor |
| JPS53133305A (en) * | 1977-04-27 | 1978-11-21 | Nippon Telegr & Teleph Corp <Ntt> | Optical communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59137922A (en) | 1984-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5004315A (en) | Optical cable and optical cable line | |
| US4941720A (en) | Optical cable network with an excess number of leads in reserve | |
| JPS6254204A (en) | Branch connecting construction method for optical cable | |
| ATE22759T1 (en) | CONNECTOR FOR WIRE CONNECTION AND METHOD. | |
| CN100356719C (en) | Connection of add-drop nodes | |
| JPH046137B2 (en) | ||
| JPS6230603B2 (en) | ||
| US4871225A (en) | Fiber optic distribution network | |
| US7171125B1 (en) | Power feed arrangement using aggregate segments | |
| JPS6290043A (en) | Optical submarine repeater | |
| JPH0223312A (en) | Method and switch for route switching | |
| JPS6298932A (en) | Method for non-hit switching of optical line | |
| JPH03143209A (en) | Method of connecting multiconductor cable for multiple-signal transmission | |
| JP3906528B2 (en) | Optical communication system | |
| JPS6281819A (en) | Connection system for emergency communication line | |
| RU2052882C1 (en) | Special branch sleeve | |
| JP2004341298A (en) | Optical fiber wiring method | |
| JPS5884552A (en) | Connecting system between transmission communication system and exchange system | |
| JPS6281825A (en) | Hitless switching method for optical line | |
| JPH1054921A (en) | Method for branching and connecting optical fibers | |
| JPS61234130A (en) | Method for restoring telephone line using optical cable by redundancy system | |
| JPS632178B2 (en) | ||
| JPH0954217A (en) | Method for branching and wiring optical fiber cable | |
| JPH0746182A (en) | Optical cable line network | |
| JPS62257107A (en) | Optical fiber cable |