JPS62279734A - Duplex optical relaying access installation - Google Patents
Duplex optical relaying access installationInfo
- Publication number
- JPS62279734A JPS62279734A JP61122319A JP12231986A JPS62279734A JP S62279734 A JPS62279734 A JP S62279734A JP 61122319 A JP61122319 A JP 61122319A JP 12231986 A JP12231986 A JP 12231986A JP S62279734 A JPS62279734 A JP S62279734A
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- JP
- Japan
- Prior art keywords
- optical
- input
- switch
- selection
- branch
- 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.)
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- 230000003287 optical effect Effects 0.000 title claims abstract description 102
- 238000009434 installation Methods 0.000 title 1
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 230000036425 denaturation Effects 0.000 abstract 2
- 238000004925 denaturation Methods 0.000 abstract 2
- 238000012544 monitoring process Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
〔産業上の利用分野〕
この発明は、二重化されたリング又はループ状の光ネッ
トワークにおける二重化光中継アクセス装置に関するも
のである。Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a duplex optical relay access device in a duplex ring or loop optical network.
第３図は例えば特開昭５８−２１９０９５号公報に示さ
れた従来の二重化光アクセス装置を示すブロック図であ
シ、図においてＩＡ 、 ＩＢ ｌ−１，Ａ系とＢ系と
に二重化された環状の光ネットワークの光伝送路であり
、２Ａ、２Ｂは夫々の系の中継アクセス部、３はＡ、Ｂ
両系に共通の監視制御部である。また、４は前記光伝送
路ＩＡあるいはＩＢに挿入され、１ｔ０１分岐／ １
ｔｏ １選択にバイパス機能が付加された光スイッチ、
５は前記光スイッチ４の分岐出力の端子４ｃに接続され
、光・電気変換機能を有する受信部、６は前記光スイッ
チ４の選択入力の端子４ｄに接続され、電気・光変換機
能を有する送信部、７及び８は自系及び相手系の受信部
５からの受信データＲＤ及び受信タイミングＲＴを前記
監視制御部３の制御によって切換選択し、送信データＳ
Ｔ及び送信データＳＴとして自系の送信部へ送るループ
バック用の選択スイッチでちゃ、前記Ａ、Ｂ両系の中継
アクセス部２Ａ、２Ｂの夫々はこれらの諸装置によって
構成されている。FIG. 3 is a block diagram showing a conventional duplex optical access device disclosed in, for example, Japanese Unexamined Patent Publication No. 58-219095. It is an optical transmission line of a circular optical network, 2A and 2B are the relay access parts of each system, and 3 is A and B.
This is a monitoring control unit common to both systems. Further, 4 is inserted into the optical transmission line IA or IB, and 1t01 branch/1
Optical switch with bypass function added to to 1 selection,
Reference numeral 5 is connected to the branch output terminal 4c of the optical switch 4, and is a receiving unit having an optical-to-electrical conversion function. Reference numeral 6 is a transmitting unit, which is connected to the selection input terminal 4d of the optical switch 4 and has an electrical-to-optical conversion function. The units 7 and 8 switch and select the reception data RD and reception timing RT from the reception units 5 of the own system and the partner system under the control of the monitoring control unit 3, and transmit the transmission data S.
The relay access sections 2A and 2B of both the A and B systems are each constituted by these devices.
次に動作について説明する。二重系各中継アクセス部２
Ａ、２Ｂが正常に運転している場合は、夫々の系におい
て上流からの光信号が光スイッチ４の分岐入力の端子４
ａから入力され端子４ｂを経て受信部５に入力されて電
気信号に変換される。Next, the operation will be explained. Dual system each relay access section 2
When A and 2B are operating normally, the optical signal from the upstream in each system is sent to the branch input terminal 4 of the optical switch 4.
The signal is inputted from a terminal 4b and then inputted to the receiving section 5, where it is converted into an electrical signal.
この受信部５を通った中継されるべき信号、受信データ
ＲＤ及び受信タイミングＲＴは、選択スイッチ７及び８
を通って送信部６に入力され、光信号に変換されて光ス
イッチ４の端子４ｄから選択出力の端子４ｂを経由して
下流局に向って送信され、中継伝送される。The signal to be relayed through the receiving section 5, the received data RD, and the receiving timing RT are determined by the selection switches 7 and 8.
The signal is inputted to the transmitter 6 through the optical switch 4, converted into an optical signal, and transmitted from the terminal 4d of the optical switch 4 to the downstream station via the selective output terminal 4b, where it is relayed.
ここで、Ａ系の中継アクセス部２Ａにループバック制御
信号が到来した場合、その受信部５で受信され九前記ル
ープバック制御信号は監視制御部３に送られる。監視制
御部３は受信信号を解読するとともに、Ｂ系の受信部５
の状態を判別しながらループバック制御出力をＢ系の選
択スイッチ７及び８へ出力し、これを切換える。これに
よって、前記Ｂ系の選択スイッチ７及び８は、以後Ａ系
の受信部５からの受信データＲＤ及び受信タイミングＲ
Ｔを選択し、これを送信データＳＤ及び送信タイミング
ＳＴとしてＢ系の送信部７へ送る。従って、Ａ系の光伝
送路ＩＡよシ中継アクセス部２人の受信部５で受信され
た受信データ及び受信タイミングはループバックされて
、中継アクセス部２Ｂの送信部６よりＢ系の光伝送路Ｉ
Ｂへ送出される。また、ループバック制御信号がＢ系の
中継アクセス部ＩＢに到来した場合も同様に処理され、
Ｂ系の光伝送路ＩＢの受信データ及び受信タイミングが
ループバックされてＡ系の光伝送路ＩＡへ送出される。Here, when a loopback control signal arrives at the A-system relay access section 2A, it is received by the receiving section 5 and the loopback control signal is sent to the supervisory control section 3. The monitoring control section 3 decodes the received signal and also sends the B-system receiving section 5
The loopback control output is output to the selection switches 7 and 8 of the B system while determining the state of the selection switches 7 and 8 to switch them. As a result, the selection switches 7 and 8 of the B system will thereafter be able to select the received data RD and the reception timing R from the A system receiving section 5.
T is selected and sent to the B-system transmitter 7 as transmission data SD and transmission timing ST. Therefore, the received data and reception timing received by the receiving units 5 of the two relay access units from the optical transmission line IA of the A system are looped back, and the data and reception timing are looped back from the optical transmission line IA of the A system to the optical transmission line of the B system. I
Sent to B. Furthermore, when the loopback control signal arrives at the B-system relay access unit IB, it is processed in the same way,
The received data and reception timing of the B-system optical transmission line IB are looped back and sent to the A-system optical transmission line IA.
従来の二重化光中継アクセス装置は以上のように構成さ
れているので、ループパンク時には受信データ及び受信
タイミングの両方を、Ａ系、Ｂ系の相互で電気信号レベ
ルによって入替接続しなければならず、Ａ、Ｂ両系間の
相互接続信号の本数が多くなり、Ａ系とＢ系が離れてい
る場合や、数＋Ｍｂ／ｓ以上というような高速の中継伝
送を行う場合は、その間の信号伝送にも伝搬特性の改善
や雑変対策に非常な注意を払う必要がちυ、これらの構
成方法、性能、及び経済性に対する改善が必要であるな
どの問題点があった。Since the conventional duplex optical relay access device is configured as described above, in the event of a loop puncture, both the received data and the reception timing must be switched and connected between the A system and the B system depending on the electrical signal level. When the number of interconnection signals between systems A and B increases, when system A and system B are far apart, or when performing high-speed relay transmission of several + Mb/s or more, it is necessary to However, there are problems in that it is necessary to pay great attention to improving propagation characteristics and countermeasures against disturbances, and it is necessary to improve the configuration method, performance, and economic efficiency of these devices.
この発明は、上記のような問題点を解消するためになさ
れたもので、ループバック時のＡ系、Ｂ系間の入替信号
を少くすると共に伝送特性、耐雑変性を改善した、経済
性の高い二重化中継アクセス装置を得ることを目的とす
る。This invention was made in order to solve the above-mentioned problems, and it is an economical method that reduces the switching signals between the A system and B system during loopback, and improves the transmission characteristics and resistance to noise. The purpose is to obtain a highly redundant relay access device.
この発明に係る、光二重化中継アクセス装置は、光スイ
ッチを１入力複数分岐出力と複数入力中１選択出力を有
する光スイッチにすると共に、Ａ系とＢ系の光スイツチ
相互間をループバック光路で接続するようにしたもので
ある。The optical duplex relay access device according to the present invention uses an optical switch having one input, multiple branch outputs, and one selection output among multiple inputs, and uses a loopback optical path between the A-system and B-system optical switches. It was designed to connect.
この発明における光二重化中継アクセス装置は、１入力
複数分岐出力と複数入力中１選択出力を有する光スイッ
チにより、Ａ系からＢ系、あるいはＢ系からＡ系の間で
光信号レベルでのループバックを行なう。The optical duplex relay access device of the present invention uses an optical switch having one input, multiple branch outputs, and one selection output among multiple inputs to perform loopback at the optical signal level from system A to system B, or from system B to system A. Do the following.
以下、この発明の一実施例を図について説明する。第１
図において、ＩＡｌＩＢはＡ系とＢ系の光伝送路、２Ａ
、２ＢはＡ、Ｂ各県の中継アクセス部、３は共通の監視
制御部である。また、９は１ ｔｏ ２分岐／ ２ ｔ
ｏ １選択、即ち、１入力２分岐出力及び２入力中１選
択出力の光スイッチで、分岐入力の端子９ａからの入力
は２つの分岐出力の端子９ｂ。An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, IAlIB is the optical transmission line of A system and B system, 2A
, 2B is a relay access unit for each prefecture A and B, and 3 is a common monitoring control unit. Also, 9 is 1 to 2 branch/2t
o It is an optical switch with 1 selection, that is, 1 input, 2 branch outputs, and 1 selection output out of 2 inputs, and the input from the branch input terminal 9a is the two branch output terminals 9b.
９ｃへ分岐して出力され、２つの選択入力の端子９ ｄ
＋ ９ ｅからの入力はいずれかが選択されて選択出
力の端子９ｆから出力される。また、１０は光・電気変
換機能、蔓信機能、送信機能及び電気・光変換機能等を
有する光中継部であシ、前記両系の中継アクセス部２Ａ
、２Ｂはこの光中継部１０と前記光スイッチ９とを備え
ている。さらに１１は前記各党スイッチ９の分岐出力の
端子の一方９ｂを、相手系の光スイッチ９の選択入力の
端子の対応する一方９ｄに相互接続する光ファイバによ
るループバック光路であυ、光スイッチ９の分岐出力の
端子の他方９Ｃ及び選択入力の端子の他方９ｅは夫々自
系の光中継部１０の光・電気変換あるいは電気・光変換
の機能部分に光ファイバ等によって接続されている。Branched to 9c and output, two selection input terminals 9d
One of the inputs from +9e is selected and output from the selected output terminal 9f. Further, 10 is an optical relay section having an optical/electrical conversion function, a transmission function, a transmission function, an electrical/optical conversion function, etc., and a relay access section 2A for both systems.
, 2B includes this optical relay section 10 and the optical switch 9. Further, reference numeral 11 denotes a loopback optical path υ by an optical fiber that interconnects one of the branch output terminals 9b of the respective party switch 9 to the corresponding one 9d of the selection input terminal of the optical switch 9 of the partner system. The other branch output terminal 9C and the other selection input terminal 9e are respectively connected to the optical-to-electrical conversion or electric-to-optical conversion functional part of the optical repeater 10 of the own system by an optical fiber or the like.
次に動作について説明する。Ａ、Ｂ両系の中継アクセス
部が正常に運転され、正常な中継伝送が行なわれている
場合には夫々の系において光伝送路ＩＡあるいはＩＢよ
シ光スイッチ９の端子９ａに入力した光信号は端子９Ｃ
に分岐出力され光中継部１０に入力される。光中継部１
０で受信した監視データは監視制御部３に入力されてい
る。光中継部１０で中継されたデータは光スイッチ９の
端子９ｅに再び光信号として出力され端子９ｆを経て光
伝送路ＩＡあるいはＩＢに送出され、下流局に伝送され
る。Next, the operation will be explained. When the relay access sections of both systems A and B are operating normally and normal relay transmission is being performed, the optical signal input to the terminal 9a of the optical switch 9 through the optical transmission line IA or IB in each system. is terminal 9C
The signal is branched out and input to the optical repeater 10. Optical relay section 1
The monitoring data received at 0 is input to the monitoring control section 3. The data relayed by the optical repeater 10 is again output as an optical signal to the terminal 9e of the optical switch 9, and sent to the optical transmission line IA or IB via the terminal 9f, and is transmitted to a downstream station.
ここで、例えば、Ａ系の光スイッチ９の端子９ｆに接続
された光伝送路ＩＡと、Ｂ系の光スイッチ９の端子９ａ
に接続された光伝送路ＩＢに障害（断線）が発生した場
合は、図示していないこの中継伝送系のマスク局がこの
状態を検出してループバック制御信号を発する。このル
ープバック制御信号は、Ａ系の中継アクセス部の光中継
部１０で受信され、監視制御部３に渡される。監視制御
部３はこの信号を解読すると共にＢ系の入力ラインにも
異常があることを判別して、この両方の結果よシループ
バンク制御出力を中継アクセス部２Ｂの光スイッチ９に
与える。この制御出力を受けたＢ系の光スイッチ９では
、自系の光中継部１０の送出する端子９ｅからの信号で
はなく、Ａ系の光スイッチ９で分岐された端子９ｄから
の信号を端子９ｆよシ光伝送路ＩＢへ送出し、光信号レ
ベルでのループバックが行なわれる。また、逆サイドの
光電送路ＩＡ、ＩＢの障害によってループバンク制御信
号がＢ系の中継アクセス装置２Ｂに到来した場合にも同
様に制御されて、Ｂ系の光スイッチ９で分岐された信号
がＡ系の光スイッチ９の端子９ｆより光伝送路ＩＡに送
出され、光信号レベルでのループバックが行われる。Here, for example, the optical transmission line IA connected to the terminal 9f of the optical switch 9 of system A, and the terminal 9a of optical switch 9 of system B
When a failure (disconnection) occurs in the optical transmission line IB connected to the optical transmission line IB, a mask station (not shown) of the relay transmission system detects this state and issues a loopback control signal. This loopback control signal is received by the optical relay unit 10 of the A-system relay access unit and is passed to the monitoring control unit 3. The supervisory control unit 3 decodes this signal and determines that there is an abnormality in the input line of the B system, and provides a loop bank control output based on both results to the optical switch 9 of the relay access unit 2B. The B-system optical switch 9 receiving this control output transmits the signal from the terminal 9d branched by the A-system optical switch 9 to the terminal 9f instead of the signal from the terminal 9e sent from the optical repeater 10 of its own system. The signal is then sent to the optical transmission line IB, and loopback is performed at the optical signal level. Furthermore, when the loop bank control signal arrives at the relay access device 2B of the B system due to a failure in the optical transmission lines IA and IB on the opposite side, the signal branched by the optical switch 9 of the B system is controlled in the same way. The signal is sent from the terminal 9f of the A-system optical switch 9 to the optical transmission line IA, and looped back at the optical signal level.
なお、上記実施例では、光スイッチ９に１ ｔｏ ２分
岐／ ２ ｔｏ ！選択形のものを使ったが、第２図に
示すように１ ｔｏ ２分岐／ ２ ｔｏ １選択に光
レベルでのバイパス機能を加えた光スイッチを使用する
ことも可能である。In the above embodiment, the optical switch 9 has a 1 to 2 branch/2 to ! Although a selection type switch was used, it is also possible to use an optical switch that has 1 to 2 branching/2 to 1 selection and a bypass function at the optical level, as shown in FIG.
第２図では、光スイッチ９がバイパスされた状態（初期
状態に等価）では、端子９ａからの入力は分岐され、前
記バイパス機能を実現する光路９ｇによって光スイッチ
９の内部を通過し、端子９ｆから出力される。In FIG. 2, when the optical switch 9 is in a bypassed state (equivalent to the initial state), the input from the terminal 9a is branched, passes through the interior of the optical switch 9 by the optical path 9g that realizes the bypass function, and is passed through the optical switch 9 through the optical path 9g that realizes the bypass function. is output from.
正常運転時には、光スイッチ９に於いて端子９ｆは９ｅ
に接続され、ループバック時には、端子９ｆは９ｄに接
続される。これらの切換は光スイツチ自身への駆動電源
印加状態及び監視制御部３のループバック制師出力によ
って制御される。During normal operation, the terminal 9f of the optical switch 9 is set to 9e.
, and during loopback, the terminal 9f is connected to 9d. These switching operations are controlled by the driving power application state to the optical switch itself and the loopback control output of the monitoring control section 3.
以上のように、この発明によれば、光信号レベルでルー
プバックできる様に構成したので、Ａ系からＢ系あるい
はＢ系からＡ系の間でのループバック信号の伝送特性、
耐雑変性がきわめて良好になり、また、電気信号レベル
でのループバックの様に受信データと受信タイミングの
両方を両系間で入替接続する必要がなくなるため、相互
接続信号の本数を減すことができ、経済性の高い二重化
光中継アクセス装置が得られる効果がある。As described above, according to the present invention, since the configuration is such that loopback can be performed at the optical signal level, the transmission characteristics of the loopback signal from the A system to the B system or from the B system to the A system,
The noise resistance is extremely good, and the number of interconnection signals can be reduced because there is no need to switch and connect both reception data and reception timing between the two systems, as is the case with loopbacks at the electrical signal level. This has the effect of providing a highly economical duplex optical relay access device.
第１図はこの発明の一実施例による二重化光中継アクセ
ス装置を示すブロック図、第２図はこの発明の他の実施
例を示す二重化光中継アクセス装置を示すブロック図、
第３図は従来の二重化光中継アクセス装置を示すブロッ
ク図である。
ＬＡ、ＩＢは光伝送路、２Ａ、２Ｂは中継アクセス部、
３は監視制御部、９は光スイッチ、９ａは分岐入力の端
子、９ ｂ ＊ ９ ｃは分岐出力の端子、９ｄ。
９ｅは選択入力の端子、９ｆは選択出力の端子、９ｇ１
ｄ：バイパス機能を実現する光路、１０は光中継部、１
１はループバック光路。
なお、図中、同一符号は同一、又は相当部分を示す。FIG. 1 is a block diagram showing a duplex optical relay access device according to an embodiment of the present invention, and FIG. 2 is a block diagram showing a duplex optical relay access device according to another embodiment of the invention.
FIG. 3 is a block diagram showing a conventional duplex optical relay access device. LA and IB are optical transmission lines, 2A and 2B are relay access sections,
3 is a monitoring control unit, 9 is an optical switch, 9a is a branch input terminal, 9b*9c is a branch output terminal, and 9d. 9e is the selection input terminal, 9f is the selection output terminal, 9g1
d: optical path for realizing bypass function, 10 is optical relay section, 1
1 is the loopback optical path. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (3)
光信号の中継を行なう送受信アクセス装置において、前
記光ネットワークの両系の光伝送路の各々に１入力複数
分岐出力及び複数入力中１選択出力を有する光スイッチ
を挿入し、この両系の光スイッチの分岐出力の端子の中
の１つとそれに対応する選択入力の端子の中の１つを、
ループバック光路にて相互接続したことを特徴とする二
重化光中継アクセス装置。(1) In a transmitting/receiving access device that is arranged in a redundant ring-shaped optical network and relays optical signals, one input, multiple branch outputs, and one selection among multiple inputs are provided for each of the optical transmission lines of both systems of the optical network. Insert an optical switch with an output, and connect one of the branch output terminals of the optical switches of both systems and one of the selection input terminals corresponding to it,
A duplex optical relay access device characterized by interconnecting through a loopback optical path.
中１選択出力を有する光スイッチを用いたことを特徴と
する特許請求の範囲第（１）項に記載の二重化光中継ア
クセス装置。(2) The duplex optical relay access device according to claim (1), characterized in that an optical switch having one input, two branch outputs, and one selective output out of two inputs is used as the optical switch.
中１選択出力とバイパス機能を有する光スイッチを用い
たことを特徴とする特許請求の範囲第（１）項に記載の
二重化光中継アクセス装置。(3) Duplex optical relay access according to claim (1), characterized in that an optical switch having one input, two branch outputs, one selection output out of two inputs, and a bypass function is used as the optical switch. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61122319A JPS62279734A (en) | 1986-05-29 | 1986-05-29 | Duplex optical relaying access installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61122319A JPS62279734A (en) | 1986-05-29 | 1986-05-29 | Duplex optical relaying access installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62279734A true JPS62279734A (en) | 1987-12-04 |
Family
ID=14833016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61122319A Pending JPS62279734A (en) | 1986-05-29 | 1986-05-29 | Duplex optical relaying access installation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62279734A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0340722A (en) * | 1989-07-04 | 1991-02-21 | Ngk Insulators Ltd | Monitoring system for distribution line |
| CN103636535A (en) * | 2013-12-06 | 2014-03-19 | 上海海洋大学 | Steel bamboo floating type artificial fish reef |
-
1986
- 1986-05-29 JP JP61122319A patent/JPS62279734A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0340722A (en) * | 1989-07-04 | 1991-02-21 | Ngk Insulators Ltd | Monitoring system for distribution line |
| CN103636535A (en) * | 2013-12-06 | 2014-03-19 | 上海海洋大学 | Steel bamboo floating type artificial fish reef |
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