JPH0363007B2 - - Google Patents
Info
- Publication number
- JPH0363007B2 JPH0363007B2 JP7290282A JP7290282A JPH0363007B2 JP H0363007 B2 JPH0363007 B2 JP H0363007B2 JP 7290282 A JP7290282 A JP 7290282A JP 7290282 A JP7290282 A JP 7290282A JP H0363007 B2 JPH0363007 B2 JP H0363007B2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- holder
- light
- connector
- detector
- 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
- 239000013307 optical fiber Substances 0.000 claims description 39
- 239000000919 ceramic Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- CPBQJMYROZQQJC-UHFFFAOYSA-N helium neon Chemical compound [He].[Ne] CPBQJMYROZQQJC-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010979 ruby Substances 0.000 description 2
- 229910001750 ruby Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
- G01M11/35—Testing of optical devices, constituted by fibre optics or optical waveguides in which light is transversely coupled into or out of the fibre or waveguide, e.g. using integrating spheres
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Description
【発明の詳細な説明】
(a) 発明の技術分野
本発明は光フアイバを使用した信号伝送系にお
いて特に光フアイバ用コネクタ内における破断を
検知する検知器に関するものである。DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to a detector for detecting a break in an optical fiber connector, particularly in a signal transmission system using an optical fiber.
(b) 技術の背景
光フアイバを使用した伝送系では機器装置の接
続箇所に光フアイバコネクタにより系を分離、接
続するが、コネクタ内には例えば外径0.125mmの
光フアイバが金属性部品の内部に接着固定されて
いる。この光フアイバが極めて細いため加工の過
誤、不適切な使用に加えて、温度変化による金属
との熱膨張率の差で伸縮を繰り返し、このために
破断を生ずる場合があり、破断部による信号の減
衰が発生する。機器装置の設置時の他、保全状態
においてもこの破断を監視する必要がある。(b) Background of the technology In transmission systems using optical fibers, the systems are separated and connected using optical fiber connectors at the connection points of devices and devices. It is fixed with adhesive. Because this optical fiber is extremely thin, in addition to incorrect processing or improper use, it can repeatedly expand and contract due to the difference in thermal expansion coefficient with metal due to temperature changes, which can cause it to break, causing signal interference due to the broken part. Attenuation occurs. It is necessary to monitor this breakage not only during equipment installation but also during maintenance.
(c) 従来技術と問題点
第１図は従来の光フアイバコネクタの断面図で
ある。点線は挿入結合時を示す。一対の光フアイ
バケーブル１は一対の保持体２の軸孔中に夫々固
定され、プラスチツク製の保護被覆を除いた外径
0.125mmの光フアイバ５は保持体２の軸心孔６に
固着された後、保持体２の端面２ａにおいて研摩
仕上げ加工が施されている。結合体３は両方向の
保持体２と嵌合する貫通孔４が設けられているた
め、対向する光フアイバ５の端面５ａ同士が一致
する。保持体２は袋状ナツト７により締め付けら
れ、保持体２の端面２ａが相互に接触する迄締め
付けられる。この様な構造において断面変化の大
きい光フアイバ５の露出部の根元５ｂには応力が
集中し易く、又金属性の保持体２と接着されてい
るため、両者の熱膨張の差による引張力を受け易
い。(c) Prior art and problems Figure 1 is a sectional view of a conventional optical fiber connector. The dotted line indicates insertion and coupling. A pair of optical fiber cables 1 are respectively fixed in the shaft holes of a pair of holders 2, and the outer diameter excluding the plastic protective coating is
After the 0.125 mm optical fiber 5 is fixed in the axial hole 6 of the holder 2, the end face 2a of the holder 2 is polished and finished. Since the combined body 3 is provided with through holes 4 that fit into the holders 2 in both directions, the end surfaces 5a of the opposing optical fibers 5 coincide with each other. The holder 2 is tightened with a bag nut 7 until the end surfaces 2a of the holder 2 come into contact with each other. In such a structure, stress tends to concentrate at the exposed root 5b of the optical fiber 5, which has a large cross-sectional change, and since it is bonded to the metal holder 2, the tensile force due to the difference in thermal expansion between the two is easily concentrated. Easy to accept.
光フアイバ５が前記の部分で破断した場合保持
体２が不透明な金属であるため、外観から知るこ
とは出来ない。又破断を生じても、破断部が密接
していて光の導通があるため信号系の切断にはな
らず検知が困難である。 If the optical fiber 5 breaks at the above-mentioned portion, it cannot be known from the appearance because the holder 2 is made of opaque metal. Furthermore, even if a break occurs, the breakage portions are close together and there is light conduction, so the signal system is not cut off and detection is difficult.
第２図は従来の光フアイバコネクタの破断検知
装置の原理図である。ヘリウム−ネオンレーザ１
１から光が光フアイバケーブル１３のコネクタ１
２の一端より入射し、被測定コネクタ１４に送ら
れ、出射光１５の光量を検出して変化を検知す
る。この方法はヘリウム−ネオンレーザ１１のた
めの電源を必要とし、多数の機器を設置した場
合、電源の有無、配置による制約を生じ、又操作
も繁雑である。 FIG. 2 is a principle diagram of a conventional optical fiber connector breakage detection device. helium-neon laser 1
1 to the connector 1 of the optical fiber cable 13
The light enters from one end of the light beam 2 and is sent to the connector to be measured 14, and the amount of output light 15 is detected to detect a change. This method requires a power source for the helium-neon laser 11, and when a large number of devices are installed, there are restrictions due to the presence or absence of power sources and their arrangement, and the operation is also complicated.
(d) 発明の目的
本発明は光フアイバコネクタの破断の検知を簡
易な装置のより実現するものである。(d) Object of the Invention The present invention realizes detection of breakage of an optical fiber connector using a simple device.
(e) 発明の構成
本発明は光フアイバコネクタの透光性を有する
保持体の内部において破断した光フアイバの散乱
光を該保持体に嵌合した透光性を有するリングに
接着したセンサーにより該散乱光の光量を捕捉
し、該光量の変化により該光フアイバの破断の有
無を検知することを特徴とするコネクタ内光フア
イバ破断検知器により上記目的を達成するもので
ある。(e) Structure of the Invention The present invention detects scattered light from an optical fiber broken inside a light-transmitting holder of an optical fiber connector using a sensor bonded to a light-transmitting ring fitted to the holder. The above object is achieved by an optical fiber breakage detector in a connector, which is characterized by capturing the amount of scattered light and detecting the presence or absence of breakage of the optical fiber based on a change in the amount of light.
(f) 発明の実施例
第３図は本発明に係るコネクタ光フアイバ破断
検知器を使用する光フアイバコネクタの保持体の
断面図である。尚第３図より第７図迄図中の同一
符号は同一物を示す。本実施例では保持体２１に
透光性のセラミツクを使用している。(f) Embodiments of the Invention FIG. 3 is a sectional view of a holder of an optical fiber connector using the connector optical fiber breakage detector according to the present invention. Note that the same reference numerals in the figures from FIG. 3 to FIG. 7 indicate the same parts. In this embodiment, the holder 21 is made of translucent ceramic.
第４図はこのようなセラミツクの光透光性の波
長と透過損失の関係図である。透過損失（吸収、
散乱損失を含む）は波長の変化に対して比較的少
なく、現在実用化されている波長0.8μmおよび今
後利用される1.3μmの波長に対して十分に透光性
を利用し得る。 FIG. 4 is a diagram showing the relationship between the wavelength of light transmittance and the transmission loss of such a ceramic. Transmission loss (absorption,
(including scattering loss) is relatively small with respect to changes in wavelength, and its translucency can be fully utilized for wavelengths of 0.8 μm, which is currently in practical use, and 1.3 μm, which will be used in the future.
保持体にセラミツクを使用することは他の利点
も多い。例えば第３図の保持体２１の光フアイバ
軸心孔２１ａはレーザ加工により高い精度を得る
ことが出来、金属製に勝る。更に形状の加工にお
いても経済的な量産的加工が可能である。従つて
保持体をセラミツクで置換することは経済的にも
有効である。 The use of ceramic for the carrier has many other advantages as well. For example, the optical fiber shaft center hole 21a of the holder 21 shown in FIG. 3 can be formed with high precision by laser processing, which is superior to metal. Furthermore, economical mass-production processing is also possible in shape processing. Therefore, it is economically effective to replace the holder with ceramic.
以下本発明に係るコネクタ内光フアイバ破断検
知器は透光性のセラミツク使用の保持体を前提と
している。 The optical fiber breakage detector in a connector according to the present invention is based on a holder made of translucent ceramic.
第５図は本発明に係るコネクタ内光フアイバ破
断検知器のシステム構成図である。光源２３に発
光ダイオード（LED）、又はレーザダイオード
（LD）を使用し、光源２３から光フアイバケーブ
ル１３の一端の光フアイバコネクタの保持体２２
に入力光が送り込まれる。被測定体となる保持体
２１には検知器付アダプタ２４がはめられる。検
知器付アダプタ２４は出力計２５に接続されてい
る。即ち光フアイバケーブル１３を通して光フア
イバの破断部から散乱する光を検知器付アダプタ
２４のセンサー２４ａにより捕え、この光量によ
り破断の有無を検知する。 FIG. 5 is a system configuration diagram of an optical fiber breakage detector in a connector according to the present invention. A light emitting diode (LED) or a laser diode (LD) is used as the light source 23, and the holder 22 of the optical fiber connector at one end of the optical fiber cable 13 is connected to the light source 23.
Input light is sent to. A detector-equipped adapter 24 is fitted to the holder 21, which is the object to be measured. The detector adapter 24 is connected to an output meter 25. That is, the light scattered from the broken part of the optical fiber through the optical fiber cable 13 is captured by the sensor 24a of the detector adapter 24, and the presence or absence of a break is detected based on the amount of this light.
第６図は本発明に係る検知器付アダプタの斜視
図である。リング２４ｂはルビーを使用し、この
外周表面には３箇所にホトセンサー２４ａが接着
されている。その内径は保持体２１の外径と嵌合
する。 FIG. 6 is a perspective view of an adapter with a detector according to the present invention. The ring 24b is made of ruby, and photosensors 24a are bonded to the outer circumferential surface of the ring 24b at three locations. Its inner diameter fits into the outer diameter of the holding body 21.
第７図は本発明に係る検知器付アダプタを保持
体に装着した状態を示す断面図である。保持体２
１をリング２４ｂに挿入し、リング２４ｂの端部
２４ｃを保持体２１のフランジ２１ｃに当てる。
保持体２１の軸心孔６に接着された光フアイバ５
がその露出部の根元５ｃで破断した場合、この散
乱光３０は点線で示すごとく散乱し、透光性セラ
ミツク製の保持体２１を貫通し、リング２４ｂを
透過してホトセンサー２４ａに到達する。ホトセ
ンサー２４ａは略根元５ｃの位置と合致させてあ
るため、この信号は導体３１をかいして出力計２
５（第５図）に伝達される。当然のことながら外
光が検知器に入射していないように遮蔽されるも
のである。 FIG. 7 is a sectional view showing a state in which the adapter with a detector according to the present invention is attached to a holder. Holder 2
1 into the ring 24b, and the end 24c of the ring 24b is brought into contact with the flange 21c of the holder 21.
Optical fiber 5 bonded to axial hole 6 of holder 21
When broken at the base 5c of the exposed portion, the scattered light 30 is scattered as shown by the dotted line, passes through the translucent ceramic holder 21, passes through the ring 24b, and reaches the photosensor 24a. Since the photosensor 24a is aligned with the position of the base 5c, this signal is transmitted through the conductor 31 to the output meter 2.
5 (Fig. 5). Naturally, the detector is shielded from outside light so that it does not enter the detector.
本実施例ではリング２４ｂにルビーを使用した
がその他サフアイア、セラミツク等も当然ながら
使用可能である。又不透明な材料の場合、例えば
金属製のリングの場合には光の透過する孔を設け
ることにより容易に実現出来る。 In this embodiment, ruby is used for the ring 24b, but other materials such as sapphire and ceramic can also be used. Further, in the case of an opaque material, for example, in the case of a metal ring, this can be easily realized by providing a hole through which light can pass.
(g) 発明の効果
本発明によれば特に固定的な電源を必要とせず
に機器の設置された箇所においてコネクタを解除
してリングにはめ、容易に短時間に検知が可能で
ある。(g) Effects of the Invention According to the present invention, it is possible to easily detect the device in a short time by releasing the connector and fitting it into the ring at the location where the device is installed, without particularly requiring a fixed power source.
第１図は従来の光フアイバコネクタの断面図、
第２図は従来の光フアイバコネクタの破断検知装
置の原理図、第３図は本発明に係るコネクタ内光
フアイバ破断検知器を使用する光フアイバコネク
タの保持体の断面図、第４図は透光性のセラミツ
クの波長と光透過損失の関係図、第５図は本発明
に係るコネクタ内光フアイバ破断検知器のシステ
ム構成図、第６図は本発明に係る検知器付アダプ
タの斜視図、第７図は本発明に係る検知器付アダ
プタを保持体に装着した状態を示す断面図であ
る。
図において５は光フアイバ、１３は光フアイバ
ケーブル、２１は保持体、２４はリング、２５は
出力計である。
Figure 1 is a cross-sectional view of a conventional optical fiber connector.
Fig. 2 is a principle diagram of a conventional optical fiber connector breakage detection device, Fig. 3 is a sectional view of an optical fiber connector holder using the optical fiber breakage detector in the connector according to the present invention, and Fig. 4 is a transparent diagram. A diagram showing the relationship between the wavelength and light transmission loss of optical ceramics, FIG. 5 is a system configuration diagram of an optical fiber breakage detector in a connector according to the present invention, and FIG. 6 is a perspective view of an adapter with a detector according to the present invention. FIG. 7 is a sectional view showing a state in which the adapter with a detector according to the present invention is attached to a holder. In the figure, 5 is an optical fiber, 13 is an optical fiber cable, 21 is a holder, 24 is a ring, and 25 is an output meter.
Claims (1)
の内部において破断した光フアイバの散乱光を該
保持体に嵌合した透光性を有するリングに接着し
たセンサーにより該散乱光の光量を捕捉し、該光
量の変化により該光フアイバの破断の有無を検知
することを特徴とするコネクタ内光フアイバ破断
検知器。1. Capture the amount of scattered light from the optical fiber broken inside the light-transmitting holder of the optical fiber connector with a sensor attached to a light-transmitting ring fitted to the holder, An optical fiber break detector in a connector, which detects whether or not the optical fiber is broken based on a change in the amount of light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7290282A JPS58190739A (en) | 1982-04-30 | 1982-04-30 | Detector for detecting breakage of optical fiber in connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7290282A JPS58190739A (en) | 1982-04-30 | 1982-04-30 | Detector for detecting breakage of optical fiber in connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58190739A JPS58190739A (en) | 1983-11-07 |
| JPH0363007B2 true JPH0363007B2 (en) | 1991-09-27 |
Family
ID=13502735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7290282A Granted JPS58190739A (en) | 1982-04-30 | 1982-04-30 | Detector for detecting breakage of optical fiber in connector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58190739A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AR087320A1 (en) * | 2011-07-29 | 2014-03-12 | Ceramoptec Ind Inc | LASER CLASS 1 TREATMENT SYSTEM |
| DE102017102885B4 (en) * | 2017-02-14 | 2019-05-02 | Harting Electric Gmbh & Co. Kg | Optical connector, connector module and method for detecting signal loss in an optical connector module |
-
1982
- 1982-04-30 JP JP7290282A patent/JPS58190739A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58190739A (en) | 1983-11-07 |
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