JPH046507A - Elastic sleeve for optical adapter - Google Patents
Elastic sleeve for optical adapterInfo
- Publication number
- JPH046507A JPH046507A JP10829690A JP10829690A JPH046507A JP H046507 A JPH046507 A JP H046507A JP 10829690 A JP10829690 A JP 10829690A JP 10829690 A JP10829690 A JP 10829690A JP H046507 A JPH046507 A JP H046507A
- Authority
- JP
- Japan
- Prior art keywords
- ferrules
- sleeve
- elastic sleeve
- optical
- slits
- 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 21
- 239000013307 optical fiber Substances 0.000 claims abstract description 20
- 238000003780 insertion Methods 0.000 claims abstract description 18
- 230000037431 insertion Effects 0.000 claims abstract description 18
- 101700004678 SLIT3 Proteins 0.000 claims abstract description 9
- 102100027339 Slit homolog 3 protein Human genes 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000001902 propagating effect Effects 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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
- G02B6/3874—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using tubes, sleeves to align ferrules
- G02B6/3877—Split sleeves
-
- 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
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3825—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres with an intermediate part, e.g. adapter, receptacle, linking two plugs
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は例えばガラスファイバ用単心光ファイバコネク
クに使用される光アダプタ用の弾性スリーブに関するも
のである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an elastic sleeve for an optical adapter used, for example, in a single optical fiber connector for glass fiber.
（従来の技術）
従来、二本の光ファイバＡを接続する光フアイバアダプ
タとしては、第７図に示すようなものがあった。これは
、光ファイバＡが挿通された二つの光プラグＦのフェル
ールＢ、Ｃを弾性スリーブＥ内にその両端から差込んで
突合わせると、第８図のように両光ファイバＡが突き合
わされて接続されるようにしたものである。(Prior Art) Conventionally, there has been an optical fiber adapter for connecting two optical fibers A as shown in FIG. This is because when the ferrules B and C of two optical plugs F with optical fibers A inserted through them are inserted into the elastic sleeve E from both ends and butted together, both optical fibers A are butted together as shown in Figure 8. It is designed to be connected.
前記弾性スリーブＥは第６図のように金属パイプＦに、
一連のスリットＧが一本だけ形成されて同バイブＥに弾
性が付与されており、その弾性により同スリーブ本体に
差込まれたフェルールＢ、Ｃが挟着されるようにしであ
る６ちなみに、フェル一ルＢ、Ｃの外径と弾性スリーブ
Ｅの内径とはサブミクロンの精度に仕上げられている。The elastic sleeve E is attached to the metal pipe F as shown in FIG.
Only one series of slits G is formed to give elasticity to the vibrator E, and this elasticity allows the ferrules B and C inserted into the sleeve body to be sandwiched together. The outer diameters of the tubes B and C and the inner diameter of the elastic sleeve E are finished to submicron precision.
（発明が解決しようとする課題）
前記のようにフェルールＢ、Ｃの外径寸法は厳しく規定
されてはいるものの、実際にはごく僅かながら誤差があ
り、外径の大きいフェルールＢと外径の小さいフェルー
ルＣとがある。(Problem to be Solved by the Invention) Although the outer diameter dimensions of ferrules B and C are strictly specified as mentioned above, in reality there are very small errors, and ferrules B and C have a large outer diameter. There is a small ferrule C.
また、この弾性スリーブＥではフェルールＢ、Ｃを差込
むとスリット３の近傍が他の部分よりも変形し易い。し
かも、従来の伸性スリーブＥはスリット３が一本だけし
か形成されていないので、外径の異なるフェルールＢ、
Ｃが弾性スリーブＥの両端から差込まれると同スリーブ
Ｅは径の大きなフェルールＢにより拡げられる。このた
め、外径の大きいフェルールＢの軸すは第５図のように
弾性スリーブＥの中心に位置するが、外径の小さいフェ
ルールＣは第５図のように同スリーブＥの底側に位置す
るためその軸ＣはフェルールＢの軸すからずれる。この
軸ずれの影響は、光ファイバＡ内を伝播する光がシング
ルモードである場合に特に大きく、数μｍの軸ずれによ
りｏ’＝０．２ｄＢ程度の光伝送損失が生じてしまう。Further, in this elastic sleeve E, when the ferrules B and C are inserted, the vicinity of the slit 3 is more easily deformed than other parts. Moreover, since the conventional elastic sleeve E has only one slit 3 formed, ferrules B with different outer diameters,
When C is inserted from both ends of the elastic sleeve E, the sleeve E is expanded by the ferrule B having a large diameter. Therefore, the shaft of the ferrule B with a large outer diameter is located at the center of the elastic sleeve E as shown in Fig. 5, but the ferrule C with a small outer diameter is located on the bottom side of the sleeve E as shown in Fig. 5. Therefore, its axis C deviates from the axis of ferrule B. The influence of this axis shift is particularly large when the light propagating in the optical fiber A is in a single mode, and an axis shift of several μm causes an optical transmission loss of about o'=0.2 dB.
（発明の目的）
本発明の目的は光ファイバの光軸合わせが容易な光アダ
プタ用弾性スリーブを提供することにある。(Object of the Invention) An object of the present invention is to provide an elastic sleeve for an optical adapter that allows easy alignment of optical axes of optical fibers.
（課題を解決するための手段）
本件発明者は前記諸問題を解決すべく鋭意研究を重ねた
結果、弾性スリーブＥの両端から差込まれる二つのフェ
ルールＢ、Ｃが弾性支持され、且つ両フェルールＢ、Ｃ
の軸が夫々個別に、弾性スリーブ自身の軸と一致すれば
よいことにｌ主目して本発明を開発した。(Means for Solving the Problems) As a result of intensive research to solve the above-mentioned problems, the inventor of the present invention found that two ferrules B and C inserted from both ends of the elastic sleeve E are elastically supported, and both ferrules B, C
The present invention was developed mainly with the aim that the axes of the elastic sleeves only need to coincide with the axes of the elastic sleeves themselves.
即ち、本発明の光アダプタ用弾性スリーブは第１図〜第
４図のように、光ファイバＡが挿通された二つのフェル
ールＢ、Ｃを、スリーブホルダＤ内の弾性スリーブＥ内
にその両端から差込んで突合わせると、前記光ファイバ
Ａが接続されるようにした光アダプタ用弾性スリーブに
おいて、スリーブ本体１の両フェルール差込み側端部２
に、同スリーブ本体ｌの軸に対して対称位置に同形状の
二本一組のスリット３が少なくとも一組以上形成され、
両フェルール差込み側端部２間にスリット３のない筒状
部４が形成されてなることを特徴とするものである。That is, as shown in FIGS. 1 to 4, the elastic sleeve for an optical adapter of the present invention inserts two ferrules B and C into which an optical fiber A is inserted into an elastic sleeve E in a sleeve holder D from both ends thereof. In the elastic sleeve for an optical adapter that connects the optical fiber A when inserted and butted together, both ferrule insertion side ends 2 of the sleeve body 1
At least one set of two slits 3 having the same shape are formed at symmetrical positions with respect to the axis of the sleeve body l,
It is characterized in that a cylindrical portion 4 without a slit 3 is formed between both ferrule insertion side end portions 2.
（作用）
本発明の光アダプタ用弾性スリーブＥでは第１図〜第３
図のように、スリーブ本体Ｉのフェルル差込み側端部２
の夫々に、二本一組のスリット３が形成され、しかも両
フェルール差込み側端部２間にはスリット３のない筒状
部４が形成されているので、長平方向両端からフェルー
ルＢ、Ｃが差込まれたスリーブ本体ｌは別々に拡がり、
二つのフェルールＢ、Ｃが別々に弾性保持されるにのと
き、前記二本一組のスリット３が前記スリーブ本体ｌの
軸に対して対称位置に形成され、しかも同形状であるの
で、同スリット３が形成されている両フェルール差込み
側端部２は軸対称に拡がる。このため、各フェルールＢ
、Ｃは夫々個別にスリーブ本体ｌの中心に差込まれて各
フェルールＢ、Ｃの軸とスリーブ本体ｌの軸とが一致し
、両光ファイバＡの光軸も一致する。(Function) In the elastic sleeve E for an optical adapter of the present invention, FIGS.
As shown in the figure, the ferrule insertion side end 2 of the sleeve body I
A pair of slits 3 are formed in each of the ferrules, and a cylindrical portion 4 without a slit 3 is formed between the insertion side ends 2 of both ferrules, so that the ferrules B and C can be inserted from both ends in the longitudinal direction. The inserted sleeve body l expands separately,
When the two ferrules B and C are elastically held separately, the pair of slits 3 are formed at symmetrical positions with respect to the axis of the sleeve body l and have the same shape, so that the slits 3 are the same. Both ferrule insertion side ends 2, on which the numbers 3 are formed, expand axially symmetrically. For this reason, each ferrule B
, C are individually inserted into the center of the sleeve body 1, and the axes of each ferrule B and C coincide with the axis of the sleeve body 1, and the optical axes of both optical fibers A also coincide.
（実施例）
第１図〜第４図は本発明の光アダプタ用弾性スリーブの
各種実施例である。(Embodiments) FIGS. 1 to 4 show various embodiments of the elastic sleeve for an optical adapter of the present invention.
第１図に示す弾性スリーブはりん青銅等のバネ性のある
金属製円筒のスリーブ本体１から構成されている。そし
て、スリーブ本体ｌの両フェルル差込み側端部２の夫々
には、同スリーブ本体１の軸に対して対称位置に同形状
の二本一組のスリット３が一組以上形成され、両フェル
ール差込み側端部２間にスリット３のない筒状部４が形
成されている。The elastic sleeve shown in FIG. 1 is composed of a cylindrical sleeve body 1 made of a resilient metal such as phosphor bronze. One or more sets of two slits 3 having the same shape are formed in each of the ferrule insertion side ends 2 of the sleeve body 1 at symmetrical positions with respect to the axis of the sleeve body 1. A cylindrical portion 4 without a slit 3 is formed between the side ends 2.
第２図の弾性スリーブＥは、第１図の弾性スリーブＥの
前記筒状部４の内周に凹陥部１３が形成されている。こ
れにより、第２図に仮想線で示すように、二つのフェル
ールＢ、Ｃは前記筒状部４の内周には接触せず、前記ス
リット３が形成された両フェルール差込み側端部２だけ
で保持されるため、両フェルールＢ、Ｃの軸がスリーブ
本体ｌの軸と一致し易くなる。In the elastic sleeve E shown in FIG. 2, a concave portion 13 is formed on the inner periphery of the cylindrical portion 4 of the elastic sleeve E shown in FIG. As a result, as shown by the imaginary lines in FIG. 2, the two ferrules B and C do not contact the inner circumference of the cylindrical portion 4, but only the insertion side ends 2 of both ferrules where the slit 3 is formed. Therefore, the axes of both ferrules B and C are easily aligned with the axis of the sleeve body l.
第３図の弾性スリーブＥは、第２図の弾性スリーブＥの
スリット３がスリーブ本体ｌの両口縁部１０には形成さ
れておらず、更に同口縁部１０の内壁に凹陥部１４が形
成されている。これにより、フェルールＢ、Ｃの外径が
スリーブ本体ｌの内径よりも大きい場合にも同口縁部ｌ
Ｏが拡がりにくくなる。In the elastic sleeve E shown in FIG. 3, the slits 3 of the elastic sleeve E shown in FIG. It is formed. As a result, even if the outer diameter of the ferrules B and C is larger than the inner diameter of the sleeve body l, the opening edge l
O becomes difficult to spread.
第４図の弾性スリーブは、スリーブ本体１のフェルール
差込み側端部の夫々に、同形状の四本二組のスリット３
が、各組毎にスリーブ本体１の軸に対して対称位置に形
成されている。更にこの実施例では前記筒状部４に前記
スリット３とは別のスリット１５が形成されて、同筒状
部４にも弾性が付与されている。The elastic sleeve shown in FIG.
are formed at symmetrical positions with respect to the axis of the sleeve body 1 for each set. Further, in this embodiment, a slit 15 separate from the slit 3 is formed in the cylindrical portion 4, and elasticity is imparted to the cylindrical portion 4 as well.
（発明の効果）
本発明の光アダプタ用弾性スリーブは以下のような効果
がある。(Effects of the Invention) The elastic sleeve for an optical adapter of the present invention has the following effects.
■、スリーブ本体ｌのフェルール差込み側端部２の夫々
に、二本一組のスリット３が同スリーブ本体１の軸に対
して対称位置に同形状に形成され、両フェルール差込み
側端部２間に筒状部４が形成されているので、同スリー
ブ本体１に差込まれた二つのフェルールＢ、Ｃは両フェ
ルール差込み側端部２に個別に弾性保持され、しかも夫
々単独でスリーブ本体ｌの中心に差込まれるため、両フ
ェルールＢ、Ｃ内の光ファイバＡが容易に光軸合わせさ
れる。(2) A set of two slits 3 are formed in each of the ferrule insertion side ends 2 of the sleeve body 1 in the same shape at symmetrical positions with respect to the axis of the sleeve body 1, and between both ferrule insertion side ends 2. Since the cylindrical portion 4 is formed in the sleeve body 1, the two ferrules B and C inserted into the sleeve body 1 are individually elastically held at both ferrule insertion side ends 2, and each can be independently attached to the sleeve body L. Since it is inserted centrally, the optical axes of the optical fibers A in both ferrules B and C can be easily aligned.
■、第２図のようにスリーブ本体ｌの筒状部４の内周に
凹陥部１３を形成すれば、二つのフェルールＢ、Ｃは同
筒状部４の内周には接触せず、前記スリット３が形成さ
れた両フェルール差込み側端部２だけで保持されるため
、両フェルールＢ、Ｃの外径の差異がスリーブ本体ｌに
は全く影響せず、より一層両フェルールＢ、Ｃがスリー
ブ本体１の中心に位置し易くなって光ファイバＡの光軸
合わせが確実になる。(2) If a concave portion 13 is formed on the inner periphery of the cylindrical portion 4 of the sleeve body l as shown in FIG. 2, the two ferrules B and C will not contact the inner periphery of the cylindrical portion 4, and the Since both ferrules are held only by the insertion side ends 2 in which the slits 3 are formed, the difference in the outer diameter of both ferrules B and C does not affect the sleeve body l at all, and both ferrules B and C are The optical fiber A can be easily positioned at the center of the main body 1, and the optical axis of the optical fiber A can be reliably aligned.
■、第３図のようにスリット３をスリーブ本体Ｉの両口
縁部１０には形成せず、更に同日縁部１０の内壁に凹陥
部１４を形成すれば、フェルールＢ、Ｃの外径がスリー
ブ本体ｌの内径よりも大きい場合にも間両フェルール差
込み側端部１０が拡がりにくくなる。(2) If the slits 3 are not formed on both edges 10 of the sleeve body I as shown in FIG. Even when the inner diameter is larger than the inner diameter of the sleeve body l, the ferrule insertion side ends 10 are difficult to expand.
■、第４図のようにスリーブ本体ｌの長手方向中央部の
筒状部４に別のスリット１５を形成すれば、同筒状部４
にも弾性が付与されて拡がり易（なる。(2) If another slit 15 is formed in the cylindrical part 4 at the longitudinal center of the sleeve body l as shown in FIG.
It is also given elasticity, making it easier to spread.
第１図は本発明の弾性スリーブの一実施例を示す斜視図
、第２図は本発明の伸性スリーブの他の実施例を示す縦
断面図、第３図は本発明の弾性スリーブの更に他の実施
例を示す縦断面図、第４図は本発明の弾性スリーブのま
た他の実施例を示す斜視図、第５図は従来の弾性スリー
ブにおけるフェルールの軸ずれを示す説明図、第６図は
従来の弾性スリーブを示す斜視図、第７図は光アダプタ
の全体構造を示す縦断面図、第８図は光アダプタを用い
た光ファイバの接続状態を示す縦断面図である。
１はスリーブ本体
２はフェルール差込み側端部
３はスリット
４は°筒状部
Ａは光ファイバ
Ｂ、 Ｃはフェルール
Ｄはスリーブホルダ
Ｅは弾性スリーブ
第１図FIG. 1 is a perspective view showing one embodiment of the elastic sleeve of the present invention, FIG. 2 is a longitudinal sectional view showing another embodiment of the elastic sleeve of the present invention, and FIG. 3 is a further embodiment of the elastic sleeve of the present invention. FIG. 4 is a perspective view showing another embodiment of the elastic sleeve of the present invention; FIG. 5 is an explanatory diagram showing ferrule axis misalignment in a conventional elastic sleeve; FIG. The figure is a perspective view showing a conventional elastic sleeve, FIG. 7 is a longitudinal sectional view showing the overall structure of an optical adapter, and FIG. 8 is a longitudinal sectional view showing how optical fibers are connected using the optical adapter. 1 is the sleeve body 2 is the ferrule insertion side end 3 is the slit 4 is the cylindrical part A is the optical fiber B, C is the ferrule D is the sleeve holder E is the elastic sleeve Fig. 1
Claims (1)
スリーブホルダＤ内の弾性スリーブＥ内にその両端から
差込んで突合わせると、前記光ファイバＡが接続される
ようにした光アダプタ用弾性スリーブにおいて、スリー
ブ本体１の両フェルール差込み側端部２に、同スリーブ
本体１の軸に対して対称位置に同形状の二本一組のスリ
ット３が少なくとも一組以上形成され、両フェルール差
込み側端部２間にスリット３のない筒状部４が形成され
てなることを特徴とする光アダプタ用弾性スリーブ。Two ferrules B and C into which optical fiber A is inserted,
In the elastic sleeve for an optical adapter, the optical fiber A is connected when the elastic sleeve E in the sleeve holder D is inserted from both ends into the elastic sleeve E and abutted against each other. , at least one set of two slits 3 of the same shape are formed at symmetrical positions with respect to the axis of the sleeve main body 1, and a cylindrical part 4 without a slit 3 is formed between both ferrule insertion side ends 2. An elastic sleeve for an optical adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10829690A JPH046507A (en) | 1990-04-24 | 1990-04-24 | Elastic sleeve for optical adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10829690A JPH046507A (en) | 1990-04-24 | 1990-04-24 | Elastic sleeve for optical adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH046507A true JPH046507A (en) | 1992-01-10 |
Family
ID=14481091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10829690A Pending JPH046507A (en) | 1990-04-24 | 1990-04-24 | Elastic sleeve for optical adapter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH046507A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0594806U (en) * | 1992-05-20 | 1993-12-24 | 本多通信工業株式会社 | Optical connector split sleeve |
| EP0863418A1 (en) * | 1997-03-06 | 1998-09-09 | Seiko Instruments Inc. | Optical fibre ferrule sleeve material, split sleeve and method of manufacturing a split sleeve |
| WO2004015473A1 (en) * | 2002-08-09 | 2004-02-19 | Le Savoir Du Gardien Inc. | Optical fiber connector assembly |
| WO2008000149A1 (en) * | 2006-06-22 | 2008-01-03 | Wuhan Telecommunication Devices Co., Ltd. | Ceramic sleeve |
| US7377703B2 (en) | 2003-10-24 | 2008-05-27 | 9134-9001 Quebec Inc. | Flexible ferrule device for connection of optical fiber and use thereof |
-
1990
- 1990-04-24 JP JP10829690A patent/JPH046507A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0594806U (en) * | 1992-05-20 | 1993-12-24 | 本多通信工業株式会社 | Optical connector split sleeve |
| EP0863418A1 (en) * | 1997-03-06 | 1998-09-09 | Seiko Instruments Inc. | Optical fibre ferrule sleeve material, split sleeve and method of manufacturing a split sleeve |
| WO2004015473A1 (en) * | 2002-08-09 | 2004-02-19 | Le Savoir Du Gardien Inc. | Optical fiber connector assembly |
| US7121731B2 (en) | 2002-08-09 | 2006-10-17 | Le Savoir Du Gardien, Inc. | Optical fiber connector assembly |
| KR100844297B1 (en) * | 2002-08-09 | 2008-07-07 | 르 사브아르 뒤 가르디엥 인코퍼레이티드 | Optical fiber connector assembly |
| US7377703B2 (en) | 2003-10-24 | 2008-05-27 | 9134-9001 Quebec Inc. | Flexible ferrule device for connection of optical fiber and use thereof |
| WO2008000149A1 (en) * | 2006-06-22 | 2008-01-03 | Wuhan Telecommunication Devices Co., Ltd. | Ceramic sleeve |
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