JPH0233213Y2 - - Google Patents
Info
- Publication number
- JPH0233213Y2 JPH0233213Y2 JP8184380U JP8184380U JPH0233213Y2 JP H0233213 Y2 JPH0233213 Y2 JP H0233213Y2 JP 8184380 U JP8184380 U JP 8184380U JP 8184380 U JP8184380 U JP 8184380U JP H0233213 Y2 JPH0233213 Y2 JP H0233213Y2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- main line
- terminal station
- optical
- input
- 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 60
- 230000003287 optical effect Effects 0.000 claims description 51
- 239000000835 fiber Substances 0.000 claims description 2
- 238000003780 insertion Methods 0.000 description 8
- 230000037431 insertion Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は光フアイバを用いた伝送路用の光スイ
ツチに関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an optical switch for a transmission line using an optical fiber.
第４図は、光データフリーウエイシステムを示
す説明図であり、ループ状に構成された光伝送路
（以下本線と略称する）５１の任意の点に本局５
２及び端局５３が設けられているが、これらの間
でデータを自由に伝送するためには、本線５１と
本局５２又は端局５３との間に光スイツチSW１
〜SW４を設ける必要がある。 FIG. 4 is an explanatory diagram showing an optical data freeway system, in which a main station 5 is connected to an arbitrary point of an optical transmission line (hereinafter abbreviated as main line) 51 configured in a loop shape.
2 and a terminal station 53, but in order to freely transmit data between them, an optical switch SW1 is installed between the main line 51 and the main station 52 or terminal station 53.
~It is necessary to provide SW4.
第１図は、第４図における一端局を示した説明
図であり、従来の１×２形光スイツチ１，１′を
対として用いる必要がある。この場合、常時は光
スイツチ１，１′は実線で図示したように端子Ａ
とＢ間、およびＣとＤ間が接続されており、本線
（図示せず）より送り込まれた光信号は矢印の方
向に進み、本線入力光フアイバ２より光スイツチ
１の端子Ａ，Ｂ間を通り、端局入力光フアイバ３
を経て光受信器４に加わる。ここで光信号は電気
信号に変換されて端局５に加えられ、処理された
のち光送信器６により光信号に変換され、端局出
力光フアイバ７より光スイツチ１′の端子Ｄ，Ｃ
間を通り、本線出力光フアイバ２′よりループの
次の区間の本線（図示せず）へ送出される。この
ような光信号の流れの状態をRX／TXモードと
称する。 FIG. 1 is an explanatory diagram showing one terminal station in FIG. 4, and it is necessary to use conventional 1.times.2 type optical switches 1 and 1' as a pair. In this case, the optical switches 1 and 1' are normally connected to terminal A as shown by the solid line.
and B, and between C and D. The optical signal sent from the main line (not shown) travels in the direction of the arrow, and is transmitted from the main line input optical fiber 2 between terminals A and B of the optical switch 1. terminal station input optical fiber 3
The signal is connected to the optical receiver 4 via the . Here, the optical signal is converted into an electrical signal and applied to the terminal station 5. After being processed, the optical signal is converted into an optical signal by the optical transmitter 6.
It passes through the main line output optical fiber 2' and is sent out to the main line (not shown) in the next section of the loop. This state of optical signal flow is called RX/TX mode.
一方、なんらかの要因により端局５に障害が生
じた場合等には、破線で図示したように光スイツ
チ１，１′をそれぞれ端子Ａ，B′間およびC.D′間
を接続するように切替え、光フアイバ８と光コネ
クタ等による接続部９および光フアイバ８′を介
して本線入力光フアイバ２と本線出力光フアイバ
２′を接続し、光信号が端局５をバイパスするよ
うにする。これをバイパスモードと称する。 On the other hand, if a failure occurs in the terminal station 5 due to some reason, the optical switches 1 and 1' are switched to connect terminals A and B' and between terminals CD' and the optical The main line input optical fiber 2 and the main line output optical fiber 2' are connected through the fiber 8, a connection part 9 such as an optical connector, and the optical fiber 8', so that the optical signal bypasses the terminal station 5. This is called bypass mode.
しかし、このような構成では、一端局に対し１
×２形光スイツチ１，１′を対として用いること
になり、大型で且つ不経済であり、その挿入損失
は光スイツチ１，１′の接点部すなわちＡとＢ間
またはＡとB′間、およびＣとＤ間またはＣと
D′間の損失をそれぞれLsdBとすると、２接点部
分の2LsdBと、これらの光スイツチを接続するた
めの接続部９の接続損失LcdBとの和2Ls＋LcdB
となる。このような光スイツチの挿入損失はもち
ろん小さいことが望ましく、光フアイバの切替え
に従来必要としていた１×２形光スイツチ２個を
対とした機能を最少接点数で実現する低挿入損失
の光スイツチが望まれていた。 However, in such a configuration, one terminal station
The ×2 type optical switches 1 and 1' are used as a pair, which is large and uneconomical, and the insertion loss is caused by the insertion loss between the contact points of the optical switches 1 and 1', that is, between A and B or between A and B'. and between C and D or with C
If the loss between D' is LsdB, then the sum of 2LsdB of the two contact parts and the connection loss LcdB of the connection part 9 for connecting these optical switches is 2Ls + LcdB.
becomes. It is of course desirable that the insertion loss of such an optical switch be low, and we are developing an optical switch with low insertion loss that can achieve the function of pairing two 1x2 type optical switches, which was conventionally required for switching optical fibers, with the minimum number of contacts. was desired.
本考案は、上記した従来技術に鑑み、従来の１
×２形光スイツチに対にして用いた場合と同じ機
能を有しながらも挿入損入が小さく、小型でかつ
簡単な構成の光スイツチを提供することにある。
In view of the above-mentioned prior art, the present invention has been developed by
To provide an optical switch having a small insertion loss and a small size and a simple structure while having the same function as when used as a pair in a ×2 type optical switch.
本考案の本線からの入力光を本線出力側あるい
は端局側に切り替える光スイツチは、本線入力光
フアイバと端局出力光フアイバが並列して第一の
支持台に固定され、本線出力光フアイバと端局入
力光フアイバが並列して第二の支持台に固定され
ており、本線と端局をつなぐときは上記本線入力
光フアイバと上記端局入力光フアイバとが接続さ
れ、且つ、上記本線出力光フアイバと上記端局出
力光フアイバとが接続され、本線と端局をつなが
ないときは上記本線入力光フアイバと上記本線出
力光フアイバだけが接続されるよう第一の支持台
あるいは第二の支持台を平行移動させるようにし
たことを要旨とするものである。
In the optical switch of the present invention, which switches input light from the main line to the main line output side or the terminal station side, the main line input optical fiber and the terminal station output optical fiber are fixed in parallel to a first support base, and the main line output optical fiber and the terminal station output optical fiber are fixed in parallel. The terminal station input optical fibers are fixed in parallel to a second support base, and when connecting the main line and the terminal station, the main line input optical fiber and the terminal station input optical fiber are connected, and the main line output optical fiber is connected to the terminal station input optical fiber. When the optical fiber and the terminal station output optical fiber are connected and the main line and the terminal station are not connected, a first support stand or a second support is provided so that only the main line input optical fiber and the main line output optical fiber are connected. The gist is that the table is moved in parallel.
本考案の実施例を図面に基づいて詳細に説明す
る。
Embodiments of the present invention will be described in detail based on the drawings.
第２図は本考案の一実施例を示す説明図であ
り、４本の光フアイバを第２図ａに示すように本
線入力光フアイバ２と端局出力光フアイバ７、本
線出力光フアイバ３と端局入力光フアイバ２′の
各２本をそれぞれ一組として対向させる。ここで
本線入力光フアイバ２は前述したように本線と接
続されており、光信号が送り込まれる。次いで光
信号は本線入力光フアイバ２と対向した本線出力
光フアイバ３を通り、光受信器４により受信さ
れ、電気信号に変換されて端局５に加えられ、処
理される。また、端局５より送出された電気信号
は光送信器６で光信号に変換され、光信号は端局
出力光フアイバ７を通り、これと対向した本線出
力光フアイバ２′よりループの次の区間の本線へ
送出され、RX／TXモードとなる。 FIG. 2 is an explanatory diagram showing an embodiment of the present invention, in which four optical fibers are connected to a main input optical fiber 2, a terminal output optical fiber 7, and a main output optical fiber 3 as shown in FIG. 2a. Each two of the terminal station input optical fibers 2' are arranged to face each other as a set. Here, the main line input optical fiber 2 is connected to the main line as described above, and an optical signal is sent thereto. The optical signal then passes through a mains output optical fiber 3 opposite to a mains input optical fiber 2, is received by an optical receiver 4, is converted into an electrical signal, and is applied to a terminal station 5 for processing. Further, the electrical signal sent from the terminal station 5 is converted into an optical signal by the optical transmitter 6, and the optical signal passes through the terminal station output optical fiber 7, and then from the main output optical fiber 2' opposite this to the next one in the loop. It is sent to the main line of the section and becomes RX/TX mode.
一方、障害時には本線入力光フアイバ２と端局
出力光フアイバ７を破線の矢印方向に光フアイバ
の中心間隔ｄと等しい距離だけ移動させると第２
図ｂに示すように本線入力光フアイバ２と本線出
力２′が対向し、本線より送り込まれた光信号は
本線入力光フアイバ２より本線出力光フアイバ
２′を通り、端局５をバイパスしてループの次の
区間の本線へ送られ、バイパスモードとなる。 On the other hand, in the event of a failure, if the main line input optical fiber 2 and the end station output optical fiber 7 are moved in the direction of the dashed arrow by a distance equal to the center distance d of the optical fibers, the second
As shown in Figure b, the main line input optical fiber 2 and the main line output 2' face each other, and the optical signal sent from the main line passes from the main line input optical fiber 2 to the main line output optical fiber 2', bypassing the terminal station 5. It is sent to the main line in the next section of the loop and becomes bypass mode.
このように、RX／TXモードおよびバイパス
モードともに一つの接点で構成でき、第１図のよ
うに１×２形光スイツチ２個と対として用いた場
合に比較して接点数が２個から１個に減少し、か
つ光スイツチ１と１′を接続するための光フアイ
バ接続部９が不要となり、その接続損失がなくな
ることから挿入損失は光スイツチの接点部損失
LsdBのみとなり、小型でかつ簡単な構成で低挿
入損失化した光スイツチが実現できる。更に、１
×２形光スイツチを対として用いた場合、それぞ
れの１×２形光スイツチの切り替えを制御しなく
てはならなかつたが、この切り替え制御も１個に
対してのみ行うだけでよい。 In this way, both RX/TX mode and bypass mode can be configured with one contact, and the number of contacts can be reduced from 2 to 1 compared to when used as a pair with two 1x2 type optical switches as shown in Figure 1. In addition, the optical fiber connection part 9 for connecting the optical switches 1 and 1' is not required, and the connection loss is eliminated, so the insertion loss is the contact loss of the optical switch.
With only LsdB, it is possible to realize an optical switch with a small and simple configuration and low insertion loss. Furthermore, 1
When ×2 type optical switches are used as a pair, it is necessary to control the switching of each 1 × 2 type optical switch, but this switching control only needs to be performed for one.
次に、光フアイバを切り替えるために移動機構
の構成の一実施例を第３図を参照して具体的に説
明する。 Next, an embodiment of the configuration of a moving mechanism for switching optical fibers will be specifically described with reference to FIG.
第３図において、２，２′，３，７′は第２図同
様の光フアイバを示す。 In FIG. 3, reference numerals 2, 2', 3, and 7' indicate optical fibers similar to those in FIG.
本線出力光フアイバ２、端局入力光フアイバ３
は固定台１０に押え板１６′，１７′で固定されて
おり、本線入力光フアイバ２、端局出力光フアイ
バ７は可動台１１に押え板１６，１７で固定され
ている。 Main line output optical fiber 2, terminal input optical fiber 3
is fixed to a fixed base 10 with press plates 16' and 17', and the main input optical fiber 2 and the terminal output optical fiber 7 are fixed to a movable table 11 with press plates 16 and 17.
固定台１０と可動台１１とは板バネ１２，１
２′で接続されている。可動台１１の位置を決め
るストツパ１３，１３′が所定間隔で設けられ、
このストツパの位置を調整する調整器１８，１
８′が設けられている。 The fixed base 10 and the movable base 11 are plate springs 12,1.
Connected at 2'. Stoppers 13, 13' for determining the position of the movable base 11 are provided at predetermined intervals,
Adjuster 18,1 for adjusting the position of this stopper
8' is provided.
１４は可動台１１を駆動するための駆動コイル
であり、１５は動きを伝達するためのアームであ
る。 14 is a drive coil for driving the movable base 11, and 15 is an arm for transmitting movement.
この可動台１１を動かす力は極力小さい方が望
ましいが、この駆動力は固定台１０と可動台１１
の間隔及び板バネ厚さに関係する。 It is desirable that the force that moves this movable table 11 be as small as possible, but this driving force is
It is related to the spacing between and the thickness of the leaf spring.
駆動力をこれらに関係なくするためには、波付
板バネを利用すればよい。 In order to make the driving force independent of these factors, a corrugated leaf spring may be used.
固定台１０と可動台１１と波付板バネによつて
接続すれば、可動台１１を動かすための駆動力は
大幅に低減できる。 If the fixed base 10 and the movable base 11 are connected by a corrugated plate spring, the driving force for moving the movable base 11 can be significantly reduced.
以上に説明した通り、本考案の２×２形光スイ
ツチであれば、次のような顕著な効果を奏する。
As explained above, the 2×2 type optical switch of the present invention has the following remarkable effects.
(1) 光接続点が少ないため、従来に比較して挿入
損失を1/3に低減できる。(1) Because there are fewer optical connection points, insertion loss can be reduced to 1/3 compared to conventional methods.
(2) 光スイツチが１個でよく、従来のような光フ
アイバ８及び光コネクタ等の接続部９が必要で
ないため、構成が簡単、小型であり、且つ経済
的である。(2) Only one optical switch is required, and the conventional optical fiber 8 and connecting portion 9 such as an optical connector are not required, so the configuration is simple, compact, and economical.
(3) 更に、光の切り替え制御を１個の光スイツチ
に対して行うだけでよい。(3) Furthermore, light switching control only needs to be performed on one optical switch.
第１図は従来の光スイツチを示す説明図、第２
図及び第３図は本考案の実施例を示す説明図、第
４図は光データフリーウエイシステムを示す説明
図である。
１，１′：１×２形光スイツチ、２：本線入力
光フアイバ、２′：本線出力光フアイバ、３：端
局入力光フアイバ、５：端局、７：端局出力光フ
アイバ、１０：固定台、１１：可動台、１２，１
２′：板バネ、１３，１３′：ストツパ、１４：駆
動コイル、１５：アーム、１８，１８′：調整器。
Figure 1 is an explanatory diagram showing a conventional optical switch, Figure 2 is an explanatory diagram showing a conventional optical switch.
3 and 3 are explanatory diagrams showing an embodiment of the present invention, and FIG. 4 is an explanatory diagram showing an optical data freeway system. 1, 1': 1x2 type optical switch, 2: Main line input optical fiber, 2': Main line output optical fiber, 3: Terminal input optical fiber, 5: Terminal station, 7: Terminal output optical fiber, 10: Fixed stand, 11: Movable stand, 12, 1
2': Leaf spring, 13, 13': Stopper, 14: Drive coil, 15: Arm, 18, 18': Adjuster.
Claims (1)
に切り替える光スイツチに於いて、本線入力光フ
アイバと端局出力光フアイバが並列して第一の支
持台に固定され、本線出力光フアイバと端局入力
光フアイバが並列して第二の支持台に固定されて
おり、本線と端局をつなぐときは前記本線入力光
フアイバと前記端局入力光フアイバとが接続さ
れ、且つ、前記本線出力光フアイバと前記端局出
力光フアイバとが接続され、本線と端局をつなが
ないときは前記本線入力光フアイバと前記本線出
力光フアイバだけが接続されるよう第一の支持台
あるいは第二の支持台を平行移動させるようにし
たことを特徴とする光スイツチ。 In an optical switch that switches input light from the main line to the main line output side or the terminal station side, the main line input optical fiber and the terminal station output optical fiber are fixed in parallel to a first support base, and the main line output optical fiber and the terminal station The station input optical fibers are fixed in parallel to a second support base, and when connecting the main line and the terminal station, the main line input optical fiber and the terminal station input optical fiber are connected, and the main line output optical fiber is connected to the terminal station input optical fiber. When the fiber and the terminal station output optical fiber are connected and the main line and the terminal station are not connected, a first support stand or a second support stand is installed so that only the main line input optical fiber and the main line output optical fiber are connected. An optical switch characterized in that it moves in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8184380U JPH0233213Y2 (en) | 1980-06-13 | 1980-06-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8184380U JPH0233213Y2 (en) | 1980-06-13 | 1980-06-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS577005U JPS577005U (en) | 1982-01-14 |
| JPH0233213Y2 true JPH0233213Y2 (en) | 1990-09-07 |
Family
ID=29444218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8184380U Expired JPH0233213Y2 (en) | 1980-06-13 | 1980-06-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0233213Y2 (en) |
-
1980
- 1980-06-13 JP JP8184380U patent/JPH0233213Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS577005U (en) | 1982-01-14 |
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