JPH0578004B2 - - Google Patents

Info

Publication number
JPH0578004B2
JPH0578004B2 JP58111059A JP11105983A JPH0578004B2 JP H0578004 B2 JPH0578004 B2 JP H0578004B2 JP 58111059 A JP58111059 A JP 58111059A JP 11105983 A JP11105983 A JP 11105983A JP H0578004 B2 JPH0578004 B2 JP H0578004B2
Authority
JP
Japan
Prior art keywords
optical
optical fiber
optical fibers
housing
link
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 - Lifetime
Application number
JP58111059A
Other languages
Japanese (ja)
Other versions
JPS603603A (en
Inventor
Masayoshi Shigihara
Norio Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP58111059A priority Critical patent/JPS603603A/en
Publication of JPS603603A publication Critical patent/JPS603603A/en
Publication of JPH0578004B2 publication Critical patent/JPH0578004B2/ja
Granted legal-status Critical Current

Links

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
    • G02B6/264—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Description

【発明の詳細な説明】 発明の技術分野 本発明は光フアイバを用いた光伝送要素に関
し、特に２つの平行な光伝送路の光入出力端間に
接続して一方の光伝送路からの出力光をほぼ
180°Uターンさせて他方の光伝送路へ入出させる
ための光Ｕリンクに関するものである。DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to an optical transmission element using an optical fiber, and in particular to an optical transmission element that is connected between the optical input and output ends of two parallel optical transmission lines to transmit the output from one optical transmission line. light almost
This relates to an optical U-link that allows a 180° U-turn to enter and exit the other optical transmission line.

技術の背景 第１図の上記のような光Ｕリンクを用いる光回
路の概略構成を示す。この光回路は基本的には回
路パネル１に設けた光源２からの出力光をパネル
後面に接続した光フアイバコード３から矢印Ａ方
向へ送信するものであるが、光源２を光フアイバ
コード３に直結させず、光原２とパネル前面との
間ならびにパネル前面と光フアイバ３との間にそ
れぞれ光フアイバ４，５を並列に配設し、これら
光フアイバ４，５のパネル前面側の光入出力端に
光Ｕリンク６を接続し、光フアイバ４からの出力
光を光Ｕリンク６によつて180°Uターンさせて光
フアイバ５に入力させ、それから光フアイバコー
ド３へ入力させるようにしたものである。TECHNICAL BACKGROUND FIG. 1 shows a schematic configuration of an optical circuit using an optical U-link as described above. This optical circuit basically transmits the output light from a light source 2 provided on a circuit panel 1 in the direction of arrow A from an optical fiber cord 3 connected to the rear surface of the panel. Optical fibers 4 and 5 are arranged in parallel between the light source 2 and the front surface of the panel and between the front surface of the panel and the optical fiber 3, respectively, without being directly connected, and the light input from the front side of the panel of these optical fibers 4 and 5 is An optical U-link 6 is connected to the output end, and the output light from the optical fiber 4 is made a 180° U-turn by the optical U-link 6, inputted to the optical fiber 5, and then inputted to the optical fiber cord 3. It is something.

このような構成を用いるのは、光源２からの光
出力レベル等をパネル前面側にて容易にモニター
可能にすることを目的としたものである。つまり
第２図に示すように、Ｕリンク６を取外して代わ
りに光フアイバ４の出力端にモニター用光フアイ
バコード７を接続すれば、光が矢印Ｂ方向へ出力
されてパネルの装置状態にて容易にモニターする
ことができる。 The purpose of using such a configuration is to make it possible to easily monitor the light output level etc. from the light source 2 on the front side of the panel. In other words, as shown in Fig. 2, if the U-link 6 is removed and the monitor optical fiber cord 7 is connected to the output end of the optical fiber 4 instead, light will be output in the direction of arrow B and the panel will be in the device state. Can be easily monitored.

尚、以上は送信の例であるが、同様の構成にお
いて光源２の代わりに受光器を用いて受信を行う
場合は、光フアイバコード３に矢印Ａと反対方向
から入力してきた光フアイバ５、Ｕリンク６、光
フアイバ４を介して受光器２で受信される。そし
てこの場合にはＵリンク６を外し、モニター用光
フアイバ７を光フアイバ５の出力端に接続（図示
せず）すれば、光入力レベルを容易にモニターで
きる。 The above is an example of transmission, but when receiving using a receiver instead of the light source 2 in a similar configuration, the optical fibers 5 and U input into the optical fiber cord 3 from the direction opposite to the arrow A. It is received by the optical receiver 2 via the link 6 and the optical fiber 4. In this case, the optical input level can be easily monitored by removing the U-link 6 and connecting the monitoring optical fiber 7 to the output end of the optical fiber 5 (not shown).

しかるに従来の光Ｕリンクには後述するような
問題があり、その対策が要望されている。 However, conventional optical U-links have problems as described below, and countermeasures are desired.

従来技術と問題点 第３図は従来の光Ｕリンクの一例を示し、符号
６は光Ｕリンク、符号８はＵリンク６を接続すべ
き装置本側のアダプタを示す。Ｕリンク６は、ア
ダプタ８に挿入される２つの光フアイバ位置決め
用フエルール９を互いに平行にしてハウジング１
０にばね１１でフローテイング状態に取り付け、
ハウジング１０内において１本の光フアイバ１２
をＵ字状に彎曲させてその両端をフエルール９に
それぞれ挿入固定してある。Prior Art and Problems FIG. 3 shows an example of a conventional optical U-link, in which reference numeral 6 indicates an optical U-link and reference numeral 8 indicates an adapter on the main side of the apparatus to which the U-link 6 is to be connected. The U-link 6 connects the housing 1 with two optical fiber positioning ferrules 9 inserted into the adapter 8 parallel to each other.
0 in a floating state with spring 11,
One optical fiber 12 within the housing 10
is bent into a U-shape, and both ends thereof are inserted and fixed into the ferrules 9, respectively.

しかるにこの構成では、光フアイバ１２の曲げ
半径Ｒは約10mmが限界であり、従つてハウジング
長さｌを最小にしてフエルール９間のピツチＬを
20mm以下とすることができない。このためアダプ
タ８のピツチ、つまり装置本体側の光伝送路のピ
ツチもこれに合わせて20mm以上とする必要があ
り、光伝送回路の小形化が制限されるという問題
がある。 However, in this configuration, the bending radius R of the optical fiber 12 is limited to about 10 mm, so the pitch L between the ferrules 9 is minimized by minimizing the housing length l.
It cannot be less than 20mm. For this reason, the pitch of the adapter 8, that is, the pitch of the optical transmission line on the device main body side, must also be set to 20 mm or more, which poses a problem in that miniaturization of the optical transmission circuit is restricted.

発明の目的 本発明の第１の目的は上記従来技術の問題点を
解決すること、即ちフエルール間のピツチを光フ
アイバの限界曲げの直径以下になし得る光Ｕリン
クを提供することである。OBJECTS OF THE INVENTION The first object of the present invention is to solve the problems of the prior art described above, that is, to provide an optical U-link in which the pitch between ferrules can be made less than the critical bending diameter of the optical fiber.

また、本発明の第２の目的は上述したような光
Ｕリンクであつて、その全長を可及的に短くし得
るように構成された光Ｕリンクを提供することで
ある。 A second object of the present invention is to provide an optical U-link as described above, which is configured so that its overall length can be made as short as possible.

発明の構成 本発明によれば、その第１の目的を達成するた
めに、光フアイバ位置決め用の一対のフエルール
を互に平行にハウジングに設け、このハウジング
内に一対の光フアイバを収容し、これら光フアイ
バの一端をそれぞれ前記フエルールに挿入固定
し、該光フアイバの光路方向を反転させるように
該光フアイバの他端部を光偏向手段でもつて互に
接続させる光Ｕリンクにおいて、前記光フアイバ
間のピツチを可及的に小さくするために、前記光
偏向手段が該光フアイバの双方の他端部に適用さ
れた反射要素からなり、これら反射要素が該双方
の他端部を互に平行に接合させてそれぞれの光軸
に対して45°の角度で互に逆向きに面取りした端
面に施された光全反射膜からなることを特徴とさ
れる。According to the present invention, in order to achieve the first object, a pair of ferrules for positioning optical fibers are provided in a housing parallel to each other, a pair of optical fibers are housed in the housing, and In an optical U-link, one end of each optical fiber is inserted and fixed into the ferrule, and the other end of the optical fiber is connected to each other using an optical deflection means so as to reverse the optical path direction of the optical fiber. In order to make the pitch as small as possible, the light deflection means comprises reflective elements applied to both other ends of the optical fiber, and these reflective elements extend the two other ends parallel to each other. It is characterized by a total reflection film applied to the end faces that are joined together and chamfered in opposite directions at an angle of 45° with respect to the respective optical axes.

また、本発明によれば、その第１および第２の
目的を達成するために、光フアイバ位置決め用の
一対のフエルールを互に平行にハウジングに設
け、このハウジング内に一対の光フアイバを収容
し、これら光フアイバの一端をそれぞれ前記フエ
ルールに挿入固定し、該光フアイバの光路方向を
反転させるように該光フアイバの他端部を光偏向
手段でもつて互に接続される光Ｕリンクにおい
て、前記光フアイバ間のピツチを可及的に小さく
するために、前記光偏向手段が該光フアイバの双
方の他端部に適用された反射要素からなり、光Ｕ
リンクの全長を可及的に短くするために、該光フ
アイバが前記ハウジング内でその長さ方向に対し
て共に同じ向きに90°の角度で彎曲させれて収容
されることを特徴とされる。 Further, according to the present invention, in order to achieve the first and second objects, a pair of ferrules for positioning the optical fibers are provided in the housing in parallel with each other, and the pair of optical fibers are accommodated in the housing. , in the optical U-link in which one end of each of these optical fibers is inserted and fixed into the ferrule, and the other end of the optical fiber is connected to each other by an optical deflection means so as to reverse the optical path direction of the optical fiber; In order to make the pitch between the optical fibers as small as possible, the light deflection means consists of reflective elements applied to both other ends of the optical fibers, so that the light U
In order to make the overall length of the link as short as possible, the optical fibers are accommodated in the housing bent at an angle of 90° in the same direction with respect to the length direction of the optical fibers. .

更に、本発明によれば、その第１および第２の
目的を達成するために、光フアイバ位置決め用の
一対のフエルールを互に平行にハウジングに設
け、このハウジング内に一対の光フアイバを収容
し、これら光フアイバの一端をそれぞれ前記フエ
ルールに挿入固定し、該光フアイバの光路方向を
反転させるように該光フアイバの他端部を光偏向
手段でもつて互に接続させる光Ｕリンクにおい
て、前記光フアイバ間のピツチを可及的に小さく
するために、前記光偏向手段が前記ハウジング内
に収容された中継光フアイバと、この中継光フア
イバの一端部と該光フアイバの一方の他端部とに
適用された反射要素と、該中継光フアイバの他端
部と該光フアイバの他方の他端部とに適用された
反射要素とからなり、光Ｕリンクの全長を可及的
に小さくするために、前記光フアイバが該ハウジ
ング内でその長さ方向に対して互に反対の向きに
90°の角度で彎曲させられて収容されると共に前
記中継光フアイバが該ハウジング内でその長さ方
向に対して直角に延在するように収容されること
を特徴とされる。 Furthermore, according to the present invention, in order to achieve the first and second objects, a pair of ferrules for positioning the optical fibers are provided in a housing parallel to each other, and the pair of optical fibers are accommodated in the housing. , an optical U-link in which one end of each of these optical fibers is inserted and fixed into the ferrule, and the other ends of the optical fibers are connected to each other by an optical deflection means so as to reverse the optical path direction of the optical fiber. In order to reduce the pitch between fibers as much as possible, the optical deflection means is connected to a relay optical fiber housed in the housing, one end of the relay optical fiber, and one other end of the optical fiber. and a reflective element applied to the other end of the relay optical fiber and the other end of the optical fiber, in order to make the overall length of the optical U-link as small as possible. , the optical fibers are oriented in opposite directions along their length within the housing.
The housing is curved at an angle of 90° and the relay optical fiber is housed within the housing so as to extend perpendicularly to its length.

発明の実施例 以下、本発明の実施例につき図面を参照して説
明する。Embodiments of the Invention Hereinafter, embodiments of the present invention will be described with reference to the drawings.

第４図、第５図及び第６は本発明により光Ｕリ
ンクの一実施例を示す。第４図において符号２０
はハウジングを示し、これに２つのフエルール２
１，２２を互に平行に且つばね２３，２４によつ
てフローテイング状態に取り付けてある。ハウジ
ング２０内には２本の光フアイバ２５，２６が並
列に収容され、これらの光フアイバの各一端はそ
れぞれフエルール２１，２２に挿入固定されてい
る。そして光フアイバ２５，２６の他端部どうし
は接続部Ｃにおいて接続されている。この光フア
イバ接続部Ｃの構造は、第５図及び第６図に明示
する如く、光フアイバ２５，２６の他端部を互に
平行に同じ向に揃えて接着剤２７で接着し、また
光フアイハ２５，２６の各端面を光軸に対し45°
の角度で且つ互に逆向きに面取りし、これらの傾
斜端面に光全反射膜２８，２９をそれぞれコーテ
イングしてある。符号２５ａ，２６ａは光フアイ
バ２５，２６のコアを示す。これにより、例えば
光フアイバコア２５ａを送られてきた光Ｏは、そ
の出力端面の光反射膜２８で90°に反射偏光され、
更に光反射膜２９で90°に反射偏光されて光フア
イバコア２６の入射端面に入射する。尚、光フア
イバクラツド層の外周において光損失が生じない
ように、接着剤２７はクラツド層の屈折率に近似
した屈折率を有するものを用い、光フアイバ２
５，２６の周囲全体に充填するのが望ましい。 4, 5 and 6 illustrate one embodiment of an optical U-link according to the present invention. Reference numeral 20 in Figure 4
indicates the housing, which has two ferrules 2
1 and 22 are mounted parallel to each other and in a floating state by springs 23 and 24. Two optical fibers 25 and 26 are housed in parallel in the housing 20, and one end of each of these optical fibers is inserted and fixed into the ferrules 21 and 22, respectively. The other ends of the optical fibers 25 and 26 are connected at a connecting portion C. As clearly shown in FIGS. 5 and 6, the structure of this optical fiber connection part C is such that the other ends of the optical fibers 25 and 26 are aligned parallel to each other in the same direction and bonded with an adhesive 27, and Each end face of the fibers 25 and 26 is set at 45° to the optical axis.
These inclined end faces are chamfered at angles such as , and in opposite directions, and are coated with total light reflection films 28 and 29, respectively. Reference numerals 25a and 26a indicate the cores of the optical fibers 25 and 26. As a result, for example, the light O transmitted through the optical fiber core 25a is reflected and polarized at 90° by the light reflection film 28 on the output end face.
Further, the light is reflected and polarized at 90° by the light reflecting film 29 and enters the incident end face of the optical fiber core 26 . In order to prevent optical loss from occurring at the outer periphery of the optical fiber cladding layer, the adhesive 27 has a refractive index close to that of the cladding layer.
It is desirable to fill the entire periphery of parts 5 and 26.

上記の構成によれば、光フアイバ２５，２６を
小さな曲げ半径で曲げる必要がなく、従つてフエ
ルール２１，２２間のピツチL1を光フアイバの
限界曲げ半径以下まで小さくすることが可能であ
る。 According to the above configuration, it is not necessary to bend the optical fibers 25, 26 with a small bending radius, and therefore it is possible to reduce the pitch L1 between the ferrules 21, 22 to below the limit bending radius of the optical fibers.

しかるに上述の第１の実施例の構成において
は、フエルール間ピツチL1を小さくすることが
できるものの、光フアイバ接続部Ｃの接続処理の
ため、ならびにフエルール２１，２２のフローテ
イング動作による光フアイバ２５，２６の曲げを
許容するために光フアイバ２５，２６に余裕長を
持たせる必要があることから、Ｕリンクの全長l1
は従来の長さｌ（第３図）よりもむしろ長くなる。
このような光Ｕリンクを装置前面に接続した場
合、装置前面からの突出量が大きく、種々の不都
合が生ずる場合がある。 However, in the configuration of the first embodiment described above, although the pitch L1 between the ferrules can be reduced, the optical fiber 25 due to the connection process of the optical fiber connection portion C and the floating operation of the ferrules 21 and 22 is , 26, it is necessary to give the optical fibers 25 and 26 an extra length, so the total length of the U link l 1
is rather longer than the conventional length l (FIG. 3).
When such an optical U-link is connected to the front of the device, the amount of protrusion from the front of the device is large, which may cause various problems.

第７図および第８図を参照すると、かかる問題
を解決し得る第２の実施例が示される。この実施
例では、光フアイバ２５，２６の一端部は共にフ
エルール２１，２２に挿入固定されるが、光フア
イバ２５，２６の接続部C1の構造は第８図に示
すようなものとされる。詳述すると、光フアイバ
２５，２６の他端部は互に並列に揃えられ、例え
ばセルフオツクレンズ（商標）等の収束形レンズ
３１の一端面に突き当て接続され、そして該収束
形レンズ３１の他端面には光全反射膜３２がコー
テイングされる。収束形レンズ３１の長さを適当
（ｎ×λ／４、但しｎは整数、λは波長）に選択
すれば、例えば光フアイバ２５からの光は収束形
レンズ３１内でその屈折率に従つた光路を通り、
反射面３２で反射偏向した後に光フアイバ２６に
入射し得る。 Referring to FIGS. 7 and 8, a second embodiment is shown that may solve this problem. In this embodiment, one ends of the optical fibers 25, 26 are both inserted and fixed into the ferrules 21, 22, and the structure of the connecting portion C1 of the optical fibers 25, 26 is as shown in FIG. . Specifically, the other ends of the optical fibers 25 and 26 are aligned parallel to each other, and are connected to one end surface of a convergent lens 31 such as a self-occurring lens (trademark), and A total light reflection film 32 is coated on the other end surface. If the length of the converging lens 31 is selected appropriately (n×λ/4, where n is an integer and λ is the wavelength), for example, the light from the optical fiber 25 will follow its refractive index within the converging lens 31. Pass through the light path,
After being reflected and deflected by the reflective surface 32, it can enter the optical fiber 26.

図７から明らかなように、本実施例では、光フ
アイバ２５，２６がハウジング３３内でその長さ
方向に対して共に互に同じ向きに90°の角度で彎
曲させられて収容される。このような構成によれ
ば、光フアイバ２５，２６が曲げ部を有するもの
の、フエルール間ピツチL1は光フアイバの限界
曲げＲ以下とすることができるだけでなく、光Ｕ
リンクの長さl2を従来の長さｌ（第３図）と同等
かあるいはそれいより少し長い程度とすることが
できる。 As is clear from FIG. 7, in this embodiment, the optical fibers 25 and 26 are accommodated in the housing 33 by being bent in the same direction at an angle of 90° with respect to the length direction of the housing 33. According to such a configuration, although the optical fibers 25 and 26 have bent portions, not only can the pitch L1 between the ferrules be less than or equal to the limit bending R of the optical fibers, but also the optical fibers U
The length l 2 of the link can be equal to or slightly longer than the conventional length l (FIG. 3).

なお、第７図に示す実施例では、セルフオツク
レンズ（商標）等の収束形レンズ３１を用いて一
方の光フアイバから他方の光フアイバへの反射偏
向を行つているが、しかしかかる反射偏向を第４
図ないし第６図に示すような態様で行うことも可
能である。 In the embodiment shown in FIG. 7, a converging lens 31 such as a self-occurring lens (trademark) is used to deflect the reflection from one optical fiber to the other. Fourth
It is also possible to carry out the process as shown in FIGS.

第９図は、第７図に示した実施例の変形実施例
が示され、この実施例では、光フアイバ２５，２
６が光フアイバ２５，２６がハウジング３３内で
その長さ方向に対して共に逆向きに90°の角度で
彎曲させられて収容されると共に、第３の中継フ
アイバ３５が光フアイバ２５，２６の彎曲部と並
列されて収容される。光フアイバ２５，２６の一
端部はそれぞれフエルール２１，２２に挿入固定
される。光フアイバ２６の他端部は中継光フアイ
バ３５の一端部と共に接続部C2を形成し、また
光フアイバ２５の他端部は中継光フアイバ３５の
他端部と接続部C3を形成する。接続部C2および
C3は第８図に示した接続部C1と同様なものであ
るが、しかし第４図ないし第６図に示した接続部
Ｃとすることもできる。このような構成によつて
も、フエルール間ピツチL1は光フアイバの限界
曲げＲ以下とすることができるだけでなく、光Ｕ
リンクの長さl2を従来の長さｌ（第３図）と同等
かあるいはそれいより少し長い程度とすることが
できる。 FIG. 9 shows a modified embodiment of the embodiment shown in FIG. 7, in which optical fibers 25, 2
The optical fibers 25 and 26 are accommodated in the housing 33 with the optical fibers 25 and 26 bent at an angle of 90 degrees in opposite directions with respect to the length direction thereof, and a third relay fiber 35 is inserted between the optical fibers 25 and 26. It is accommodated in parallel with the curved section. One ends of the optical fibers 25 and 26 are inserted and fixed into the ferrules 21 and 22, respectively. The other end of the optical fiber 26 forms a connection C 2 with one end of the relay optical fiber 35 , and the other end of the optical fiber 25 forms a connection C 3 with the other end of the relay optical fiber 35 . Connection C 2 and
C 3 is similar to the connection C 1 shown in FIG. 8, but could also be the connection C shown in FIGS. 4 to 6. Even with this configuration, not only can the pitch L1 between ferrules be less than the bending limit R of the optical fiber, but also the optical fiber
The length l 2 of the link can be equal to or slightly longer than the conventional length l (FIG. 3).

発明の効果 以上の如く本発明によれば、フエルール間ピツ
チの極めて小さい、或いはそれに加えて外形全長
も従来程度に小さな光Ｕリンクが得られ、光伝送
回路の高密度化ひいては小型化への寄与は非常に
大きい。Effects of the Invention As described above, according to the present invention, it is possible to obtain an optical U-link in which the pitch between ferrules is extremely small, and in addition, the total external length is also small compared to conventional ones, which contributes to higher density and further miniaturization of optical transmission circuits. is very large.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図及び第２図は光Ｕリンクを用いる光回路
の概略構成及び光Ｕリンクの使用方法を示す図、
第３図は従来の光Ｕリンクの構成図、第４図から
第６図は本発明の光Ｕリンクの一実施例を示すも
ので第４図はその構成図、第５図及び第６図はそ
れぞれ光フアイバ接続部の側面図及び横断面図、
第７図は本発明による光Ｕリンクの別の実施例の
構成図、第８図は光フアイバの接続部の側面図、
第９図は第７図の実施例の変形実施例を示す構成
図である。 ２０……ハウジング、２１，２２……フエルー
ル、２３，２４……ばね、２５，２６……光フア
イバ、２８，２９……光全反射膜、３１……集束
形レンズ、３２……光全反射膜、３３，３４……
ハウジング、３５……中継光フアイバ、C1，C2，
C3……光フアイバ接続部。 1 and 2 are diagrams showing a schematic configuration of an optical circuit using an optical U-link and a method of using the optical U-link,
FIG. 3 is a block diagram of a conventional optical U-link, and FIGS. 4 to 6 show an embodiment of the optical U-link of the present invention. FIG. 4 is a block diagram of the same, and FIGS. 5 and 6 are a side view and a cross-sectional view of the optical fiber connection, respectively;
FIG. 7 is a configuration diagram of another embodiment of the optical U-link according to the present invention, FIG. 8 is a side view of the optical fiber connection part,
FIG. 9 is a block diagram showing a modification of the embodiment shown in FIG. 7. 20... Housing, 21, 22... Ferrule, 23, 24... Spring, 25, 26... Optical fiber, 28, 29... Total light reflection film, 31... Focusing lens, 32... Total light reflection Membrane, 33, 34...
Housing, 35... Relay optical fiber, C 1 , C 2 ,
C 3 ...Optical fiber connection.

Claims (1)

【特許請求の範囲】 １ 光フアイバ位置決め用の一対のフエルール２
１，２２を互に平行にハウジング２０に設け、こ
のハウジング２０内に一対の光フアイバ２５，２
６を収容し、これら光フアイバの一端をそれぞれ
前記フエルールに挿入固定し、該光フアイバの光
路方向を反転させるように該光フアイバの他端部
を光偏向手段でもつて互に接続させる光Ｕリンク
において、 前記光フアイバ２５，２６間のピツチL1を可
及的に小さくするために、前記光偏向手段が該光
フアイバの双方の他端部に適用された反射要素か
らなり、これら反射要素が該双方の他端部を互に
平行に接合させてそれぞれの光軸に対して45°の
角度で互に逆向きに面取りした端面に施された光
全反射膜２８，２９からなることを特徴とする光
Ｕリンク。 ２ 光フアイバ位置決め用の一対のフエルール２
１，２２を互に平行にハウジング２０に設け、こ
のハウジング２０内に一対の光フアイバ２５，２
６を収容し、これら光フアイバの一端をそれぞれ
前記フエルールに挿入固定し、該光フアイバの光
路方向を反転させるように該光フアイバの他端部
を光偏向手段でもつて互に接続させる光Ｕリンク
において、 前記光フアイバ２５，２６間のピツチL1を可
及的に小さくするために、前記光偏向手段が該光
フアイバの双方の他端部に適用された反射要素２
８，２９；C2からなり、光Ｕリンクの全長l1を可
及的に短くするために、前記光フアイバ２５，２
６が前記ハウジング２０内でその長さ方向に対し
て共に同じ向きに90°の角度で彎曲させれて収容
されることを特徴とする光Ｕリンク。 ３ 光フアイバ位置決め用の一対のフエルール２
１，２２を互に平行にハウジング２０に設け、こ
のハウジング２０内に一対の光フアイバ２５，２
６を収容し、これら光フアイバの一端をそれぞれ
前記フエルールに挿入固定し、該光フアイバの光
路方向を反転させるように該光フアイバの他端部
を光偏向手段でもつて互に接続させる光Ｕリンク
において、 前記光フアイバ２５，２６間のピツチL1を可
及的に小さくするために、前記光偏向手段が前記
ハウジング２０内に収容された中継光フアイバ３
５と、この中継光フアイバ３５の一端部と該光フ
アイバの一方２６の他端部とに適用された反射要
素２８，２９；C3と、該中継光フアイバ３５の
他端部と該光フアイバの他方２５の他端部とに適
用された反射要素２８，２９；C4とからなり、
光Ｕリンクの全長l1を可及的に小さくするため
に、前記光フアイバ２５，２６が該ハウジング２
０内でその長さ方向に対して互に反対の向きに
90°の角度で彎曲させられて収容されると共に前
記中継光フアイバ３５が前記ハウジング２０内で
その長さ方向に対して直角に延在するように収容
されることを特徴とする光Ｕリンク。[Claims] 1. A pair of ferrules for positioning an optical fiber 2
1 and 22 are provided in a housing 20 in parallel with each other, and a pair of optical fibers 25 and 2 are provided in the housing 20.
6, one end of each of these optical fibers is inserted and fixed into the ferrule, and the other ends of the optical fibers are connected to each other by an optical deflection means so as to reverse the optical path direction of the optical fiber. In order to reduce the pitch L 1 between the optical fibers 25 and 26 as much as possible, the light deflection means consists of reflective elements applied to both other ends of the optical fibers, and these reflective elements The other end portions of both sides are joined in parallel to each other and are chamfered in opposite directions at an angle of 45° with respect to the respective optical axes. Light U link. 2 Pair of ferrules 2 for optical fiber positioning
1 and 22 are provided in a housing 20 in parallel with each other, and a pair of optical fibers 25 and 2 are provided in the housing 20.
6, one end of each of these optical fibers is inserted and fixed into the ferrule, and the other ends of the optical fibers are connected to each other by an optical deflection means so as to reverse the optical path direction of the optical fiber. In order to make the pitch L 1 between the optical fibers 25, 26 as small as possible, the optical deflection means are applied to the reflective elements 2 at both other ends of the optical fibers.
8, 29; C 2 and in order to shorten the total length l 1 of the optical U-link as much as possible, the optical fibers 25, 2
6 are accommodated in the housing 20 by being curved at an angle of 90 degrees in the same direction with respect to the length direction of the optical U-link. 3 Pair of ferrules 2 for optical fiber positioning
1 and 22 are provided in a housing 20 in parallel with each other, and a pair of optical fibers 25 and 2 are provided in the housing 20.
6, one end of each of these optical fibers is inserted and fixed into the ferrule, and the other ends of the optical fibers are connected to each other by an optical deflection means so as to reverse the optical path direction of the optical fiber. In order to make the pitch L 1 between the optical fibers 25 and 26 as small as possible, the optical deflection means is a relay optical fiber 3 housed in the housing 20.
5, reflective elements 28, 29 applied to one end of the relay optical fiber 35 and the other end of the one optical fiber 26; C3 , the other end of the relay optical fiber 35 and the other end of the optical fiber reflective elements 28, 29 applied to the other end of the other 25;
In order to make the total length l1 of the optical U-link as small as possible, the optical fibers 25, 26 are connected to the housing 2.
0 in opposite directions along its length
An optical U-link characterized in that the optical U-link is curved at an angle of 90° and accommodated, and the relay optical fiber 35 is accommodated within the housing 20 so as to extend perpendicularly to its length.
JP58111059A 1983-06-22 1983-06-22 Optical u-link Granted JPS603603A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58111059A JPS603603A (en) 1983-06-22 1983-06-22 Optical u-link

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58111059A JPS603603A (en) 1983-06-22 1983-06-22 Optical u-link

Publications (2)

Publication Number Publication Date
JPS603603A JPS603603A (en) 1985-01-10
JPH0578004B2 true JPH0578004B2 (en) 1993-10-27

Family

ID=14551356

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58111059A Granted JPS603603A (en) 1983-06-22 1983-06-22 Optical u-link

Country Status (1)

Country Link
JP (1) JPS603603A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015198562A2 (en) 2014-06-26 2015-12-30 Sony Corporation Imaging device and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160139337A1 (en) * 2013-10-17 2016-05-19 Ofs Fitel, Llc Dual-Ended Optical Fiber Pathway

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS561909A (en) * 1979-06-20 1981-01-10 Hitachi Cable Ltd Connecting method of optical fiber
JPS5697310A (en) * 1980-01-08 1981-08-06 Nec Corp Optical connector connecting system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015198562A2 (en) 2014-06-26 2015-12-30 Sony Corporation Imaging device and method

Also Published As

Publication number Publication date
JPS603603A (en) 1985-01-10

Similar Documents

Publication Publication Date Title
US5692081A (en) Four polarization maintaining optical fiber ferrule and optical coupler using same
US4296995A (en) Optical fiber beam splitter couplers employing coatings with dichroic properties
US4807954A (en) Optical coupling device
US5499309A (en) Method of fabricating optical component including first and second optical waveguide chips having opposed inclined surfaces
EP0271177B1 (en) Optical fibre coupler
KR20040015330A (en) High power expanded beam connector and methods for using and making the high power expanded beam connector
JPH08248266A (en) Optical fiber ferrule and optical coupler formed by using this optical fiber ferrule
US3967877A (en) Coupler for coupling optical energy transmitted by optical fiber to optical waveguide and method of manufacture
JPS60239701A (en) Star-shaped coupler monitor and manufacture thereof
JPH11133261A5 (en)
JPH02188706A (en) Optical fiber coupler
US5822478A (en) Optical device with means for preventing remaining scattered light rays from being fed back to the signal line and method for fabricating it
JP2976591B2 (en) Line monitor
JP3229142B2 (en) Optical device
JPH0578004B2 (en)
US5011255A (en) Holographic optical fiber coupler
JPS6075806A (en) Optical coupler
JPH03269505A (en) Optical fiber connector
CN115113336B (en) Polarization coupler and method for manufacturing the same
JPH01227108A (en) Optical branching circuit
JPH05203829A (en) Loopback optical connector device
JP3112030B2 (en) Waveguide type optical coupler
US20030108266A1 (en) Optical isolator
JPS5913723B2 (en) fiber optic connector
JPS62269909A (en) Light-receiving device