JPS60185907A - Optical fiber protection member - Google Patents
Optical fiber protection memberInfo
- Publication number
- JPS60185907A JPS60185907A JP59041670A JP4167084A JPS60185907A JP S60185907 A JPS60185907 A JP S60185907A JP 59041670 A JP59041670 A JP 59041670A JP 4167084 A JP4167084 A JP 4167084A JP S60185907 A JPS60185907 A JP S60185907A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- optical
- protection member
- fiber cable
- 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.)
- Pending
Links
- 239000013307 optical fiber Substances 0.000 title claims description 38
- 230000003287 optical effect Effects 0.000 claims description 19
- 239000000463 material Substances 0.000 description 8
- 239000000835 fiber Substances 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00163—Optical arrangements
- A61B1/00165—Optical arrangements with light-conductive means, e.g. fibre optics
-
- 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
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2552—Splicing of light guides, e.g. by fusion or bonding reshaping or reforming of light guides for coupling using thermal heating, e.g. tapering, forming of a lens on light guide ends
-
- 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
- G02B6/3887—Anchoring optical cables to connector housings, e.g. strain relief features
- G02B6/38875—Protection from bending or twisting
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Animal Behavior & Ethology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Radiology & Medical Imaging (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Plasma & Fusion (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は光フアイバケーブルと光デバイストノ接続部を
保強するために使用される光ファイバ保苧−−ｄ
膜部材に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical fiber protective film member used for reinforcing the connection between an optical fiber cable and an optical device.
近年、レーザおよび光ファイバの実用化により、光フア
イバ通信は急速な進歩を遂げ、この進歩と共に発光およ
び受光モジュール、光分波器、光分岐器、元スイッチ、
光減衰器、光コネクタ等′の光デバイスも多数実用化、
商品化されている。これら光デバイスおよび光ファイバ
の高品質化、高信頼性化が進むにつれ、光デバイスと光
フアイバケーブルとの接続部の信頼性も重要な問題とな
ってきている。In recent years, with the practical application of lasers and optical fibers, optical fiber communication has made rapid progress, and along with this progress, light emitting and receiving modules, optical demultiplexers, optical splitters, switches,
Many optical devices such as optical attenuators and optical connectors have been put into practical use.
It has been commercialized. As the quality and reliability of these optical devices and optical fibers continues to improve, the reliability of the connection between the optical device and the optical fiber cable has become an important issue.
従来の光デバイスと光フアイバケーブルとの接続状態お
よび光フアイバケーブル保護部材を第１図罠よシ説明す
る。第１図は光コネクタプラグに使用されているフェル
ール１と光フアイバケーブル４の接続状態の１例を示す
断面図である。図示のように、光フアイバケーブルの外
部被覆４、補強繊維３、心線被覆となるガラス毛細管２
を接着あるいは圧着等によシフエルールｌに固定する。A conventional connection state between an optical device and an optical fiber cable and an optical fiber cable protection member will be explained with reference to FIG. FIG. 1 is a sectional view showing an example of a connection state between a ferrule 1 and an optical fiber cable 4 used in an optical connector plug. As shown in the figure, an outer coating 4 of an optical fiber cable, reinforcing fibers 3, and a glass capillary tube 2 serving as a core coating
is fixed to the shifter rule l by gluing or crimping.
一方、ファイバ素線５は、ガラス毛細管２を介して接着
等によりフェルール１に固定する。On the other hand, the fiber wire 5 is fixed to the ferrule 1 via the glass capillary tube 2 by adhesive or the like.
このような従来の光ファイバケーブル固定方法罠おいて
は、第１図のようにファイバケーブル４を折シ曲げて引
張ると、フェルール１の開口部１ａにおいて光フアイバ
ケーブル４が最大許容曲げ半径以上に曲げられ、損傷し
たり断線したりする欠れているが、従来の保護部材は材
質の硬度が全部分にわたってほぼ一定であるため、材質
が硬い場合には第２図の６ａの部分において光ファイバ
が鋭角に曲げられ損傷し、一方、材質がやわらかい場合
には第１図の１ａの部分において光ファイバの損傷がお
こる。このように、従来の光フアイバ保護部材では、光
フアイバケーブルを極度に曲げた状態で引張シカを加え
ると、光ファイバが損傷したシ破断する恐れがあり、光
ファイバケーブル付き光デバイスの取シ扱いが困難とい
う欠点があった。In such a conventional optical fiber cable fixing method, when the fiber cable 4 is bent and pulled as shown in FIG. However, in conventional protection members, the hardness of the material is almost constant over the entire part, so if the material is hard, the optical fiber will break at the part 6a in Figure 2. On the other hand, if the material is soft, the optical fiber will be damaged at the portion 1a in FIG. 1. In this way, with conventional optical fiber protection members, if tensile stress is applied to the optical fiber cable while it is extremely bent, the optical fiber may be damaged and break, so it is difficult to handle optical devices with optical fiber cables. The disadvantage was that it was difficult to
本発明の目的は、光デバイスと光フアイバケーブルとの
接続部に対し、光フアイバケーブルの曲げ応力が作用し
たとき光ファイバの損傷や破断を有効に防止し得る光フ
アイバ保護部材を提供することにある。An object of the present invention is to provide an optical fiber protection member that can effectively prevent damage or breakage of the optical fiber when bending stress of the optical fiber cable is applied to the connection between an optical device and the optical fiber cable. be.
この目的のために本発明は、光フアイバケーブルが接続
されている光コネクタ等の光デバイスにおいて、前記ケ
ーブルとデバイスとの接続部を覆いかつデバイスを覆っ
ている部分からケーブルの長手方向に向かって剛性を段
階的又は連続的に低くせしめた構成としたものである。For this purpose, the present invention provides an optical device such as an optical connector to which an optical fiber cable is connected, which covers the connecting portion between the cable and the device, and extends from the portion covering the device in the longitudinal direction of the cable. The structure is such that the rigidity is lowered stepwise or continuously.
以下、本発明を図面を参照しながら実施例につき詳細に
説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to embodiments with reference to the drawings.
第３図は本発明を説明するだめの部分断面図である。こ
の図において、保護部材６は、６ｂから６ａの部分に向
かって材質剛性が段階的あるいは連続的に低くなってお
り、従って第３図のように光フアイバケーブルを曲げた
状態で引張っても、光フアイバケーブルは第１図のよう
に完全に屈曲せず、曲げ半径Ｒで曲がる。ここで、半径
Ｒが光フアイバケーブルの最大許容曲げ半径以上になる
よう保護部材の材質を選定しておけば、光ファイバは、
曲げられた状態において引張られても、損傷や破断をお
こすことはない。FIG. 3 is a partial cross-sectional view for explaining the present invention. In this figure, the material rigidity of the protective member 6 decreases stepwise or continuously from 6b to 6a, so even if the optical fiber cable is pulled in a bent state as shown in FIG. The optical fiber cable does not bend completely as shown in FIG. 1, but bends with a bending radius R. Here, if the material of the protective member is selected so that the radius R is greater than or equal to the maximum allowable bending radius of the optical fiber cable, the optical fiber can be
Even if it is stretched in a bent state, it will not be damaged or break.
保護部材６の材質剛性を段階的あるいは連続的に低くす
るには、材質がゴムの場合、局部的に加硫条件を変えた
り、また材質が金属の場合には、熱処理条件を局部的に
変化させることで達成できる。あるいは他の手段として
、第４図のように、・イルバネ７においてその径キーを
ｉ〆からはの部分に向かって段階的あるいは連続的に小
さくするか、又は第５図のように、前記コイルばね７を
ゴム製の保護部材８に埋めこむことでもよい。To lower the material rigidity of the protective member 6 stepwise or continuously, if the material is rubber, locally change the vulcanization conditions, or if the material is metal, locally change the heat treatment conditions. This can be achieved by letting Alternatively, as shown in FIG. 4, the diameter key of the coil spring 7 is made smaller stepwise or continuously from the i end to the i end, or as shown in FIG. The spring 7 may also be embedded in a protective member 8 made of rubber.
あるいは１だ、第６図のように、保護部材８の中に、厚
さが９ａから９ｂの部分へ向かって段階的、あるいは連
続的に小さくなるバネ部材９を埋め込んでも良い。さら
に第も図のようＫ、バネ部材９′を一様な厚さ又は直径
をもつものにかえ、この部材９′ヲ内蔵した部材８′の
厚さをケーブル長手方向に向って薄くしておけば、保護
部材全体としての剛性が長手方向に向って低くなる。Alternatively, as shown in FIG. 6, a spring member 9 whose thickness gradually or continuously decreases from 9a to 9b may be embedded in the protective member 8. Furthermore, as shown in Figure 1, the spring member 9' should be changed to one with a uniform thickness or diameter, and the thickness of the member 8' built into this member 9' should be made thinner in the longitudinal direction of the cable. For example, the rigidity of the protection member as a whole decreases in the longitudinal direction.
以上のように、本発明の光フアイバ保護部材を光デバイ
スと光フアイバケーブルの接続部に適用することによシ
、光フアイバケーブルを引張った状態において曲げ力を
加えた場合でも、光フ５アイバが損傷や破断をおこさな
い効果がある。したがって本発明の光フアイバ保護部材
を使用することによシ、光デバイスと光フアイバケーブ
ルとの接続部の信頼性は向上し、光ファイバケーブル付
光デバイスの取シ扱いが容易になる。As described above, by applying the optical fiber protection member of the present invention to the connection portion between an optical device and an optical fiber cable, even when a bending force is applied to the optical fiber cable in a pulled state, the optical fiber protection member can be It has the effect of not causing damage or breakage. Therefore, by using the optical fiber protection member of the present invention, the reliability of the connection between the optical device and the optical fiber cable is improved, and the handling of the optical device with the optical fiber cable is facilitated.
第１図および第２図は、それぞれ従来の光フアイバ保護
部材の縦断面図、第３図は本発明に係る保護部材の縦断
面図、第４図〜第７図はそれぞれ本発明の各種実施例を
示す縦断面図である。
１・・・フェルール、 ２・・・ガラス毛細管、３・・
・補強繊維、 ４・・・ファイバケーブル、５・・・フ
ァイバ素線、６・・費泰台保護部材、７・・・コイル、
８，８′・・・光フアイバ保護部材９．９′・・・バ
ネ部材。
代理人 弁理士 染川利吉
第１図
第う図
第４図
第６図
ソ
第７図1 and 2 are longitudinal sectional views of a conventional optical fiber protection member, FIG. 3 is a longitudinal sectional view of a protection member according to the present invention, and FIGS. 4 to 7 are respective views of various embodiments of the present invention. It is a longitudinal cross-sectional view showing an example. 1... Ferrule, 2... Glass capillary, 3...
・Reinforcement fiber, 4... Fiber cable, 5... Fiber wire, 6... Fiber protection member, 7... Coil,
8, 8'... Optical fiber protection member 9.9'... Spring member. Agent Patent Attorney Rikichi Somekawa Figure 1 Figure U Figure 4 Figure 6 Figure So Figure 7
Claims (1)
デバイスにおいて、前記ケーブルとデバイスの接合部を
覆い、デバイスを覆っている部分からケーブルの長手方
向に向って剛性を段階的又は連続的に低くせしめたこと
を特徴とする光フアイバ保護部材。In an optical device such as an optical connector to which an optical fiber cable is connected, the joint between the cable and the device is covered, and the rigidity is lowered stepwise or continuously in the longitudinal direction of the cable from the part that covers the device. An optical fiber protection member characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59041670A JPS60185907A (en) | 1984-03-05 | 1984-03-05 | Optical fiber protection member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59041670A JPS60185907A (en) | 1984-03-05 | 1984-03-05 | Optical fiber protection member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60185907A true JPS60185907A (en) | 1985-09-21 |
Family
ID=12614831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59041670A Pending JPS60185907A (en) | 1984-03-05 | 1984-03-05 | Optical fiber protection member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60185907A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63146806U (en) * | 1987-03-18 | 1988-09-28 | ||
| JPS63146805U (en) * | 1987-03-18 | 1988-09-28 | ||
| JPH0262403U (en) * | 1988-10-28 | 1990-05-10 | ||
| US7144164B2 (en) | 2001-09-19 | 2006-12-05 | Fujitsu Quantum Devices Limited | Optical device and method of manufacturing the same |
| JP2007206220A (en) * | 2006-01-31 | 2007-08-16 | Fibest Ltd | Protective sleeve, optical device, and method of manufacturing optical device |
-
1984
- 1984-03-05 JP JP59041670A patent/JPS60185907A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63146806U (en) * | 1987-03-18 | 1988-09-28 | ||
| JPS63146805U (en) * | 1987-03-18 | 1988-09-28 | ||
| JPH0262403U (en) * | 1988-10-28 | 1990-05-10 | ||
| US7144164B2 (en) | 2001-09-19 | 2006-12-05 | Fujitsu Quantum Devices Limited | Optical device and method of manufacturing the same |
| JP2007206220A (en) * | 2006-01-31 | 2007-08-16 | Fibest Ltd | Protective sleeve, optical device, and method of manufacturing optical device |
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