JP3078106B2 - Optical line identification method - Google Patents
Optical line identification methodInfo
- Publication number
- JP3078106B2 JP3078106B2 JP04112822A JP11282292A JP3078106B2 JP 3078106 B2 JP3078106 B2 JP 3078106B2 JP 04112822 A JP04112822 A JP 04112822A JP 11282292 A JP11282292 A JP 11282292A JP 3078106 B2 JP3078106 B2 JP 3078106B2
- Authority
- JP
- Japan
- Prior art keywords
- optical line
- optical
- core
- optical fiber
- identification
- 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
Links
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- Light Guides In General And Applications Therefor (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は光通信に用いられる光線
路をその端部において識別する方法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for identifying an optical line used for optical communication at an end thereof.
【０００２】[0002]
【従来の技術】光線路の識別方法として、光線路のコア
の屈折率を部分的に変化させ、この変化位置をＯＴＤＲ
測定法を用いて線路端部で検出する方法が知られている
（１９９１年電子情報通信学会秋季大会 文献Ｂ−５９
１「光線路データベースのための遠隔ファイバ識別
法」）。2. Description of the Related Art As a method for identifying an optical line, the refractive index of a core of the optical line is partially changed, and the position of this change is designated as OTDR.
A method of detecting at the end of a line using a measuring method is known (The 1991 Autumn Meeting of the Institute of Electronics, Information and Communication Engineers, Document B-59).
1 "Remote fiber identification method for optical line database").
【０００３】[0003]
【発明が解決しようとする課題】しかし、この方法によ
れば、光線路に設ける識別符号部が数百メートルにわた
ってしまう。たとえば、上述した文献中の例では、８ビ
ットの識別符号を光線路に記録するのに１ビット当たり
５０ｍ、全体で４００ｍの長さを要している。したがっ
て、もともと短い長さの光線路に対して識別符号を付け
ることは困難である。また、数百メートルにわたる識別
符号を光線路に記録するには、光線路の製造過程でこれ
を行う必要があり、実用的ではない。多心型光線路にお
いても、このような問題は同様に存在する。However, according to this method, the identification code portion provided on the optical line extends over several hundred meters. For example, in the example in the above-mentioned document, recording an 8-bit identification code on an optical line requires 50 m per bit and a total length of 400 m. Therefore, it is difficult to attach an identification code to an optical line having a short length. Also, in order to record an identification code over several hundred meters on an optical line, this must be performed during the manufacturing process of the optical line, which is not practical. Such a problem similarly exists in a multi-fiber optical line.
【０００４】[0004]
【課題を解決するための手段】このような問題点を解決
するために、本発明の識別方法は、複数の光ファイバ心
線を束ねた多心型光線路の各光ファイバ心線に選択的に
反射部を設け、前記多心型光線路毎に反射部の有無につ
いての組み合わせをかえて識別標識とし、これらの多心
型光線路に対して検査光を入射したときの前記識別標識
からの反射光を測定し、この測定結果に基づいて多心型
光線路を識別するものである。SUMMARY OF THE INVENTION In order to solve such a problem, the identification method of the present invention provides a multi-core optical line in which a plurality of optical fiber cores are bundled. A reflection portion is provided, and the combination of the presence or absence of the reflection portion is changed for each of the multi-core optical lines to be an identification marker, and when the inspection light is incident on these multi-core optical lines, The reflected light is measured, and the multi-core optical path is identified based on the measurement result.
【０００５】また、識別標識を光線路中に直接設ける代
わりに、光線路に識別標識を有する分岐線路を付加して
もよい。[0005] Instead of providing the identification mark directly in the optical line, a branch line having the identification mark may be added to the optical line.
【０００６】[0006]
【作用】光線路の各光ファイバ心線の片端から検査光を
入射するとその光は識別標識である反射部で反射され入
射端に戻ってくる。各光ファイバ心線の反射部の有無に
ついての組み合わせを光線路ごとに異なるものとしてお
けば、多心型光線路毎にすべての光ファイバ心線につい
て反射光の有無を測定することにより光線路を識別でき
る。When the inspection light is incident from one end of each optical fiber core of the optical line, the light is reflected by the reflecting portion, which is an identification mark, and returns to the incident end. If the combination of the presence or absence of the reflection portion of each optical fiber is different for each optical line, the presence or absence of the reflected light is measured for all the optical fibers for each multi-core optical line so that the optical line is measured. Can be identified.
【０００７】[0007]
【実施例】図１は、本発明の光線路の識別方法を適用す
る光線路設備管理システムを示す構成図である。局舎１
と加入者宅３との間には、光線路の接続切り換えを行う
ための端子函２が設けられている。局舎１内の伝送装置
４に一端が接続されている複数の光線路は光ファイバケ
ーブル９として束ねられ、端子函２まで延びている。各
光線路の他端は、端子函２内において、各加入者宅３に
延びている光線路の一端と光コネクタ１０を介して接続
され、これにより、局舎１内の伝送装置４と各加入者宅
３とがそれぞれ１本の光線路で接続されたことになる。
光コネクタ１０では、接続の切り換えを手動で任意に行
うことができる。この切り換えを行う際には、まず、局
舎１内に置かれた識別標識読取装置（コード読取装置）
５で、後述する識別方法により光線路のルート情報を調
べ、そのルート情報を制御装置６から端子函２内のロー
カルコントローラ１１に伝達し、表示装置１２で現場の
作業者にその情報を知らせる。作業者はそのルート情報
に基づいて所望のコネクタ切り換えを行う。切り換え作
業終了後、再びコード読取装置５で光線路の識別標識を
読み取って局舎１側でルート情報を確認し、このルート
情報を制御装置６からローカルコントローラ１１を介し
て表示装置１２に表示することで、作業者は切り換えの
良否を確認する。なお、局舎１と端子函２のと間の光線
路は、複数本ずつ束ねられて多心型光線路を構成し、こ
の多心型光線路がさらに束ねられて光ファイバケーブル
９が構成されているものとする。そして、以下の説明に
おける光線路の識別は、多心型光線路毎の識別に関する
ものであり、その場合の多心型光線路内の各光線路を光
ファイバ心線と呼ぶことにする。FIG. 1 is a configuration diagram showing an optical line facility management system to which an optical line identification method according to the present invention is applied. Office building 1
A terminal box 2 for switching connection of an optical line is provided between the terminal box 2 and the subscriber home 3. A plurality of optical lines, one ends of which are connected to the transmission device 4 in the office 1, are bundled as an optical fiber cable 9 and extend to the terminal box 2. The other end of each optical line is connected to one end of the optical line extending to each subscriber's home 3 via an optical connector 10 in the terminal box 2, whereby the transmission device 4 in the office building 1 is connected to each end. This means that each of the subscriber homes 3 is connected by one optical line.
In the optical connector 10, the connection can be manually switched arbitrarily. When performing this switching, first, an identification sign reader (code reader) placed in the station building 1
At 5, the route information of the optical line is checked by the identification method described later, and the route information is transmitted from the control device 6 to the local controller 11 in the terminal box 2, and the display device 12 notifies the worker at the site of the information. The operator performs desired connector switching based on the route information. After the switching work is completed, the code reader 5 reads the identification mark of the optical path again, confirms the route information on the side of the station 1, and displays this route information on the display device 12 from the control device 6 via the local controller 11. Thus, the operator confirms whether or not the switching has been performed. The optical lines between the station building 1 and the terminal box 2 are bundled together to form a multi-core optical line, and the multi-core optical lines are further bundled to form an optical fiber cable 9. It is assumed that The identification of the optical line in the following description relates to the identification of each multi-core optical line, and each optical line in the multi-core optical line in this case will be referred to as an optical fiber core.
【０００８】図２は、コード読取装置５の内部構成およ
びその周辺装置を示すブロック図である。コード読取装
置５は発光部２０と受光部２１を備え、これらは制御回
路６を構成するコンピュータ２２およびタイミング制御
回路２３によってその動作が制御される。FIG. 2 is a block diagram showing the internal configuration of the code reading device 5 and its peripheral devices. The code reading device 5 includes a light emitting unit 20 and a light receiving unit 21. The operation of these units is controlled by a computer 22 and a timing control circuit 23 that constitute the control circuit 6.
【０００９】発光部２０は、白色光などの適当なスペク
トル幅を持つ光を発する光源２４と、光源２４から放射
される光をオンオフ制御する音響光学素子２５と、この
音響光学素子２５の入出力部にそれぞれ設けられたレン
ズ系２６、２７とで構成されており、光源２４から放射
された光はレンズ２６、音響光学素子２５、レンズ２７
を経て、光ファイバ４０の一端に検査光として入射され
る。光ファイバ４０は、被測定光線路である多心型光フ
ァイバ５０とコード読取装置５とを繋ぐ分岐光線路であ
り、接続手段３８を介して被測定光線路５０と接続され
ている。この光ファイバ４０も被測定光線路と同数の心
線を持つ多心型光ファイバである。接続手段３８は、多
心型光ファイバ４０を多数の多心型被測定光線路５０の
中のいずれかに選択的に接続するものである。The light emitting section 20 includes a light source 24 that emits light having an appropriate spectral width such as white light, an acousto-optic device 25 that controls on / off of light emitted from the light source 24, and an input / output of the acousto-optic device 25. The light emitted from the light source 24 is transmitted through the lens 26, the acousto-optic device 25, and the lens 27.
, And is incident on one end of the optical fiber 40 as inspection light. The optical fiber 40 is a branch optical line that connects the multi-core optical fiber 50, which is the optical line under test, to the code reader 5, and is connected to the optical line under test 50 via the connection unit 38. This optical fiber 40 is also a multi-core optical fiber having the same number of optical fibers as the optical line to be measured. The connection means 38 is for selectively connecting the multi-core optical fiber 40 to one of a number of multi-core optical paths 50 to be measured.
【００１０】受光部２１は、多心型光線路５０の心線数
と同数の受光素子３１と、この受光素子３１の出力信号
をデジタル値に変換してコンピュータ２２に与えるＡ／
Ｄ変換回路３２と、各受光素子３１の前方に設けられた
レンズ３３とを備えている。受光素子３１は、光ファイ
バ４０に光ファイバカップラ３７で接続されている光フ
ァイバ４１からの光を受光して電気信号に変換する。光
ファイバ４１も多心型であり、多心型光線路５０の心線
と同数すなわち光ファイバ４１の心線と同数の光ファイ
バ心線を有し、これらの各光ファイバ心線がそれぞれ受
光素子３１の一つ一つに導かれている。したがって、各
光ファイバ心線毎の反射光有無を検出することができ
る。受光素子３１はタイミング制御回路２３に動作制御
されるものであり、図の左側から順に受光動作させるこ
とにより、光ファイバ心線毎の反射光信号をＡ／Ｄ変換
回路３２に順に供給することができる。The light receiving section 21 has the same number of light receiving elements 31 as the number of cores of the multi-core optical line 50, and outputs an A / A signal to the computer 22 after converting an output signal of the light receiving element 31 into a digital value.
It includes a D conversion circuit 32 and a lens 33 provided in front of each light receiving element 31. The light receiving element 31 receives light from the optical fiber 41 connected to the optical fiber 40 by the optical fiber coupler 37 and converts the light into an electric signal. The optical fiber 41 is also of a multi-core type, and has the same number of optical fibers as the number of the cores of the multi-core optical line 50, that is, the same number of optical fibers as the number of the cores of the optical fiber 41. Each one of the 31 is led. Therefore, the presence or absence of reflected light for each optical fiber core can be detected. The operation of the light receiving element 31 is controlled by the timing control circuit 23. By performing the light receiving operation sequentially from the left side of the drawing, the reflected light signal for each optical fiber core can be sequentially supplied to the A / D conversion circuit 32. it can.
【００１１】各光線路５０には、それぞれ固有の識別標
識（コード）３９が線路中に書き込まれている。識別標
識３９は、多心型光線路の各光ファイバ心線に選択的に
反射部を設け、多心型光線路毎に各光ファイバ心線の反
射部の有無の組み合わせをかえたものである。図３は、
テープ型多心光線路の識別標識の例を示すものである。
テープ型多心光線路６０の各光ファイバ心線６１を一部
露出させ、識別標識部６２とする。この部分に反射部６
３を選択的に設ける。反射部６３はＵＶ照射により光フ
ァイバ心線６１の屈折率を変化させることにより形成す
ることができる。あるいは、光ファイバ心線を切断して
切断部に光フィルタを挿入することでも形成できる。な
お、図３では、説明を容易にするために、識別標識部６
２が露出した状態となっているが、実際には機械的な強
度を保つためにこの部分がシリコンチップなどの基板で
補強される。Each optical line 50 has a unique identification mark (code) 39 written in the line. The identification marker 39 is provided by selectively providing a reflection portion to each optical fiber core of the multi-core optical line, and changing the combination of the presence or absence of the reflection portion of each optical fiber core for each multi-core optical line. . FIG.
It is a figure which shows the example of the identification mark of a tape-type multi-core optical line.
Each of the optical fiber core wires 61 of the tape-type multi-core optical line 60 is partially exposed to serve as an identification marker 62. Reflection part 6 in this part
3 is selectively provided. The reflecting portion 63 can be formed by changing the refractive index of the optical fiber 61 by UV irradiation. Alternatively, it can be formed by cutting an optical fiber core wire and inserting an optical filter into the cut portion. Note that, in FIG.
Although 2 is exposed, this portion is actually reinforced with a substrate such as a silicon chip in order to maintain mechanical strength.
【００１２】つぎに、識別標識３９の読取方法を説明す
る。いま、多心型光線路を８心テープ型光ファイバとす
る。発光部２１から、読取り対象としているテープ型光
ファイバのすべて（８本）の光ファイバ心線に対して検
査光を入射すると、受光部２１では反射部を有する光フ
ァイバ心線からのみ反射光を得る。これらの反射光は光
ファイバ心線と１対１に対応する受光素子３１で検出さ
れ、その信号はＡ／Ｄ変換回路３２を経てコンピュータ
２２に入力される。図４は、検出結果の一例を示す表で
ある。光ファイバ心線にそれぞれ１から８までの番号を
付与し、各心線番号における反射部の有無に応じて、反
射光の検出・非検出が得られる。反射光を検出した場合
のコードを「１」、検出しなかった場合のコードを
「０」とすると、検出結果から８ビットのコード情報を
得ることができる。Next, a method of reading the identification mark 39 will be described. Now, the multi-core optical line is an eight-core tape optical fiber. When the inspection light is incident on all (eight) optical fiber cores of the tape type optical fibers to be read from the light emitting part 21, the light receiving part 21 reflects the reflected light only from the optical fiber core having the reflection part. obtain. These reflected lights are detected by the light receiving elements 31 corresponding one-to-one with the optical fibers, and the signals are input to the computer 22 via the A / D conversion circuit 32. FIG. 4 is a table showing an example of the detection result. Numbers 1 to 8 are given to the optical fiber cores, respectively, and detection / non-detection of the reflected light can be obtained according to the presence or absence of the reflection part in each core number. Assuming that the code when the reflected light is detected is “1” and the code when the reflected light is not detected is “0”, 8-bit code information can be obtained from the detection result.
【００１３】なお、図５に示すように、識別標識を光線
路中に直接書き込む代わりに、識別標識１００が書き込
まれた分岐光線路１０１をファイバカプラ１０２などを
用いて付加してもよい。この分岐光線路１０１も当然に
多心型光線路である。As shown in FIG. 5, instead of directly writing the identification mark in the optical line, a branch optical line 101 on which the identification mark 100 is written may be added using a fiber coupler 102 or the like. The branch optical line 101 is also a multi-core optical line.
【００１４】[0014]
【発明の効果】以上説明したように本発明の識別方法に
よれば、多心型光線路の識別方法において、心線毎に選
択的に反射部を設けることで識別標識とし、すべての心
線について、反射光の有無を測定すれば、その測定結果
から容易にかつ正確に多心型光線路を識別できる。した
がって、端子函における切り換え作業の際の接続の確認
に極めて有効である。As described above, according to the identification method of the present invention, in the method of identifying a multi-core optical line, a reflective portion is selectively provided for each core wire to provide an identification mark, and all the core wires are identified. By measuring the presence or absence of reflected light, the multi-core optical line can be easily and accurately identified from the measurement result. Therefore, it is very effective for confirming the connection at the time of the switching operation in the terminal box.
【図１】本発明の識別方法を適用する光線路設備管理シ
ステムを示すブロック図。FIG. 1 is a block diagram showing an optical line facility management system to which the identification method of the present invention is applied.
【図２】そのコード読取装置の内部構成およびその周辺
装置を示すブロック図。FIG. 2 is a block diagram showing the internal configuration of the code reading device and its peripheral devices.
【図３】識別標識の具体例を示す図。FIG. 3 is a diagram showing a specific example of an identification mark.
【図４】反射部の有無を２値のコード情報に変換する方
法についての説明図。FIG. 4 is an explanatory diagram of a method of converting presence / absence of a reflection portion into binary code information.
【図５】識別標識用の分岐光線路を示す図。FIG. 5 is a diagram showing a branch optical line for identification signs.
１…局舎、２…端子函、３…加入者宅、４…伝送装置、
５…コード読取装置、６…制御装置、２０…発光部、２
１…受光部、３９…識別標識、５０…光線路。1 ... office building, 2 ... terminal box, 3 ... subscriber home, 4 ... transmission device,
5 code reader, 6 controller, 20 light emitting unit, 2
1 ... light receiving section, 39 ... identification mark, 50 ... optical line.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山下 克也 東京都千代田区内幸町一丁目１番６号 日本電信電話株式会社内 (72)発明者 大槻 文男 東京都千代田区内幸町一丁目１番６号 日本電信電話株式会社内 (56)参考文献 特開 平４−84727（ＪＰ，Ａ) 特開 平４−309904（ＪＰ，Ａ) 電子情報通信学会大会講演論文集、 1991〔秋季４〕（1991）ｐ．４．51 (58)調査した分野(Int.Cl.7，ＤＢ名) G02B 6/00 G01M 11/00 G02B 6/44 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Katsuya Yamashita, Inventor Katsuya 1-6-1 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Fumio Otsuki 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Japan (56) References JP-A-4-84727 (JP, A) JP-A-4-309904 (JP, A) Proceedings of the Conference of the Institute of Electronics, Information and Communication Engineers, 1991 [Autumn 4] (1991) p. . 4.51 (58) Field surveyed (Int. Cl. 7 , DB name) G02B 6/00 G01M 11/00 G02B 6/44
Claims (1)
線路の各光ファイバ心線に選択的に反射部を設け、前記
多心型光線路毎に反射部の有無についての組み合わせを
かえて識別標識とし、これらの多心型光線路に対して検
査光を入射したときの前記識別標識からの反射光を測定
し、この測定結果に基づいて多心型光線路を識別する光
線路の識別方法。1. A multi-core optical line comprising a plurality of optical fiber bundles, a reflective portion is selectively provided on each optical fiber core, and a combination of the presence or absence of a reflective portion is determined for each of the multi-core optical lines. Instead, it is used as an identification mark, and the reflected light from the identification mark when the inspection light is incident on these multi-core optical lines is measured, and based on the measurement result, the multi-core optical line is identified. Identification method.
Priority Applications (16)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04112822A JP3078106B2 (en) | 1992-05-01 | 1992-05-01 | Optical line identification method |
| CA002112692A CA2112692C (en) | 1992-05-01 | 1993-04-28 | Method for identifying optical line |
| CA002449305A CA2449305A1 (en) | 1992-05-01 | 1993-04-28 | Optical waveguide having a diffraction grating area and method of fabricating the same |
| DE69333369T DE69333369T2 (en) | 1992-05-01 | 1993-04-28 | Optical line identification method |
| EP98102083A EP0851248B1 (en) | 1992-05-01 | 1993-04-28 | Method for identifying optical line |
| AU42713/93A AU666382B2 (en) | 1992-05-01 | 1993-04-28 | Method for identifying optical line |
| EP93911952A EP0592690B1 (en) | 1992-05-01 | 1993-04-28 | Method for identifying optical line |
| PCT/JP1993/000567 WO1993022647A1 (en) | 1992-05-01 | 1993-04-28 | Method for identifying optical line |
| US08/170,297 US5506674A (en) | 1992-05-01 | 1993-04-28 | Method for identifying an optical fiber using a pattern of reflected light |
| KR1019930704090A KR970004993B1 (en) | 1992-05-01 | 1993-04-28 | Method for identifying an optical fiber using a pattern of reflected light |
| DE69321548T DE69321548T2 (en) | 1992-05-01 | 1993-04-28 | METHOD FOR IDENTIFYING AN OPTICAL LINE |
| CN93106370A CN1045663C (en) | 1992-05-01 | 1993-05-01 | A method of discriminating optical waveguides |
| CNB991024729A CN1238980C (en) | 1992-05-01 | 1993-05-01 | Method for identifying light path |
| NO19934917A NO318903B1 (en) | 1992-05-01 | 1993-12-30 | Identification of optical fiber optics |
| US08/605,265 US5671308A (en) | 1992-05-01 | 1996-01-19 | Optical waveguide having diffraction grating area and method of fabricating the same |
| KR97701034A KR0148255B1 (en) | 1992-05-01 | 1997-02-17 | Method for identifying an optical fiber using a pattern of reflected light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04112822A JP3078106B2 (en) | 1992-05-01 | 1992-05-01 | Optical line identification method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05313021A JPH05313021A (en) | 1993-11-26 |
| JP3078106B2 true JP3078106B2 (en) | 2000-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04112822A Expired - Lifetime JP3078106B2 (en) | 1992-05-01 | 1992-05-01 | Optical line identification method |
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| Country | Link |
|---|---|
| JP (1) | JP3078106B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4956163B2 (en) * | 2006-12-05 | 2012-06-20 | 古河電気工業株式会社 | Optical fiber identification device and optical fiber identification method |
-
1992
- 1992-05-01 JP JP04112822A patent/JP3078106B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| 電子情報通信学会大会講演論文集、１９９１〔秋季４〕（１９９１）ｐ．４．５１ |
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| Publication number | Publication date |
|---|---|
| JPH05313021A (en) | 1993-11-26 |
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