JPS61223816A - Optical switch with monitor optical path - Google Patents
Optical switch with monitor optical pathInfo
- Publication number
- JPS61223816A JPS61223816A JP6562685A JP6562685A JPS61223816A JP S61223816 A JPS61223816 A JP S61223816A JP 6562685 A JP6562685 A JP 6562685A JP 6562685 A JP6562685 A JP 6562685A JP S61223816 A JPS61223816 A JP S61223816A
- Authority
- JP
- Japan
- Prior art keywords
- transmission line
- optical transmission
- optical
- mirror film
- 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.)
- Granted
Links
Abstract
Description
【発明の詳細な説明】
〔概要〕
光伝送路が１つで、装置側が２重化された光通信システ
ムにおいて発信側の光信号が、高精度で且つ確実に切換
えられて、伝送されているか、否かを確認可能ととする
ために、モニタ光路付光スイッチを提供する。[Detailed Description of the Invention] [Summary] In an optical communication system in which there is one optical transmission path and the device side is duplicated, is the optical signal on the transmitting side switched and transmitted with high precision and reliably? An optical switch with a monitor optical path is provided in order to make it possible to confirm whether or not the object is detected.
本発明はモニタ光路付光スイッチに関する。 The present invention relates to an optical switch with a monitor optical path.
光通信システムにおいては、長距離にわたって配線され
た光伝送線路（例えば光ケーブル）は１つにして、発信
側、受信側の重要装置は２重化するのが一般である。In optical communication systems, it is common to use a single optical transmission line (for example, an optical cable) that is wired over a long distance, and to duplicate important equipment on the transmitting and receiving sides.
この際、光スイッチにより切換えられた光信号が、光伝
送線路に伝送されているかを確認可能なモニタ光路付光
スイッチが要望されている。At this time, there is a demand for an optical switch with a monitor optical path that can confirm whether the optical signal switched by the optical switch is being transmitted to the optical transmission line.
２本の入力側光伝送路と１本の出力側光伝送路とを切り
換える従来の光スイッチ、例えば直交する２千面の内面
のそれぞれにミラーを形成し、出力側光伝送路を挟んで
両側に入力側光伝送路を並設し、このミラーを移動せさ
るものがある。Conventional optical switches switch between two input-side optical transmission lines and one output-side optical transmission line, for example, mirrors are formed on each of the 2,000 orthogonal inner surfaces, and both sides of the output-side optical transmission line are connected. There is one in which an optical transmission line on the input side is installed in parallel with the mirror, and this mirror is moved.
このような従来の光スイッチでは、光スイツチ部分で出
力側光伝送路に伝送されている光信号をモニタすること
ができない。In such a conventional optical switch, it is not possible to monitor the optical signal being transmitted to the output optical transmission line at the optical switch portion.
したがって、従来のモニタする一般的の手段は、光スイ
ッチの後の出力側光伝送路側に光分岐回路を挿入して、
モニタ用の光伝送路を設け、これにより光信号をモニタ
している。Therefore, the conventional and common means of monitoring is to insert an optical branch circuit on the output optical transmission line side after the optical switch.
A monitoring optical transmission line is provided to monitor the optical signal.
しかしながら上記従来の手段では、光スイッチとは別に
、モニタ用の分岐回路を設けるので、装置が大形化し、
コスト高になるという問題点がある。However, in the conventional means described above, a branch circuit for monitoring is provided in addition to the optical switch, which increases the size of the device.
There is a problem that the cost is high.
上記従来の問題点を解決するため本発明は、第１図に示
す如くに、直角プリズム形に形成された第１の切換素子
１０と第２の切換素子２０とが、頂角側が互いに反対側
になる如く並列に配置して構成され、光伝送路に直交す
る方向に往復運動することにより、光路を切換える光ス
イッチ３０と、第１の入力側光伝送路１に対して光スイ
ッチ３０を挟んで対向して配設された出力側光伝送路３
と、出力側光伝送路３に並行して同じ側に配設された第
２の入力側光伝送路２と、第２の入力側光伝送路２に対
して光スイッチ３０を挟んで対向して配設されたモニタ
側光伝送路４とを備え、第１の切換素子１０の第１の入
力側光伝送路１に対応する斜面にハーフミラ膜１１を、
第２の入力側光伝送路２に対応する斜面にミラー膜１２
を形成し、第２の切換素子２０の第１の入力側光伝送路
１に対応する斜面にミラー膜２１を、第２の入力側光伝
送路２に対応する斜面にハーフミラ膜２２をそれぞれ形
成したものである。In order to solve the above-mentioned problems of the conventional art, the present invention provides that, as shown in FIG. An optical switch 30 is configured to be arranged in parallel as shown in FIG. Output side optical transmission line 3 arranged facing each other at
and a second input optical transmission line 2 disposed parallel to and on the same side as the output optical transmission line 3, and facing the second input optical transmission line 2 with an optical switch 30 in between. A half-mirror film 11 is provided on the slope of the first switching element 10 corresponding to the first input optical transmission line 1.
A mirror film 12 is provided on the slope corresponding to the second input side optical transmission line 2.
A mirror film 21 is formed on the slope of the second switching element 20 corresponding to the first input optical transmission line 1, and a half mirror film 22 is formed on the slope corresponding to the second input optical transmission line 2. This is what I did.
上記本発明の手段によれば、出力側光伝送路３に対応す
る位置に、第１の切換素子１０があるときは、入力側光
伝送路ｌより出射する光信号の大部分はハーフミラ膜１
１を透過して直進し、出力側光伝送路３に入射する。そ
して残りの光信号は、ハーフミラ膜１１で反射して９０
度光路を変えて、ミラー膜１２に投射され、ミラー膜１
２で全反射して、光路を９０度変えてモニタ側光伝送路
４に入射する。According to the above means of the present invention, when the first switching element 10 is located at a position corresponding to the output optical transmission line 3, most of the optical signal output from the input optical transmission line l is transferred to the half mirror film 1.
1, the light passes straight ahead, and enters the output optical transmission line 3. The remaining optical signal is reflected by the half-mirror film 11 and
The optical path is changed and the beam is projected onto the mirror film 12.
2, the light beam changes its optical path by 90 degrees and enters the monitor side optical transmission line 4.
また光スイッチ３０を駆動して、第２の切換素子２０が
出力側光伝送路３に対応する位置に移動させると、第２
の入力側光伝送路２より出射する光信号の大部分はハー
フミラ膜２２で反射して９０度光路を変えて、ミラー膜
２１に投射され、ミラー膜２１で全反射して９０度光路
を変え、出力側光伝送路３に入射する。Further, when the optical switch 30 is driven and the second switching element 20 is moved to a position corresponding to the output optical transmission line 3, the second switching element 20 is moved to a position corresponding to the output side optical transmission line 3.
Most of the optical signal emitted from the input side optical transmission line 2 is reflected by the half-mirror film 22, changes the optical path by 90 degrees, is projected onto the mirror film 21, and is totally reflected by the mirror film 21, changing the optical path by 90 degrees. , enters the output side optical transmission line 3.
そして、残りの光信号は、ハーフミラ膜２２を透過して
直進しモニタ側光伝送路４に入射する。The remaining optical signal passes through the half-mirror film 22, travels straight, and enters the monitor-side optical transmission line 4.
以下図示実施例により、本発明を具体的に説明する。 The present invention will be specifically explained below with reference to illustrated examples.
第１図は本発明の１実施例の構成図であり、第２図の（
ａ）、 （ｂ）は光路図である。
“第１図において、光スイッチ３０は、第
１の切換素子１０と第２の切換素子２０とが、支持枠６
により一体化されており、支持枠６の下部は、光伝送路
に直交する方向に形成された、駆動装置５のガイド溝に
挿入されている。そして、駆動装置５には図示してない
電磁石が装着され、一体化した第１の切換素子１０と第
２の切換素子２０とに往復運動を付与するように構成し
である。FIG. 1 is a block diagram of one embodiment of the present invention, and FIG.
a) and (b) are optical path diagrams.
"In FIG. 1, the optical switch 30 has a first switching element 10 and a second switching element 20 connected to a support frame 6.
The lower part of the support frame 6 is inserted into a guide groove of the drive device 5, which is formed in a direction perpendicular to the optical transmission path. An electromagnet (not shown) is attached to the drive device 5, and is configured to impart reciprocating motion to the integrated first switching element 10 and second switching element 20.
第１の切換素子１０と第２の切換素子２０は、本体部が
ガラスよりなり、同形状の直角プリズム形に形成されて
いる。そして、第１の切換素子１０と第２の切換素子２
０とは、頂角側が互いに反対側になる如く並列し接着固
定され、さらに側面が支持枠６に固定されている。The first switching element 10 and the second switching element 20 have main bodies made of glass and are formed into the same right-angled prism shape. Then, the first switching element 10 and the second switching element 2
0 are arranged in parallel and adhesively fixed so that the apex sides are opposite to each other, and the side surfaces are further fixed to the support frame 6.
出力側光伝送路３は、第１の入力側光伝送路１に対して
光スイッチ３０を挟んで対向して同一軸心上に配設され
ており、第２の入力側光伝送路２は出力側光伝送路３に
並行して出力側光伝送路３と同じ側に配設されたている
。The output side optical transmission line 3 is disposed on the same axis, facing the first input side optical transmission line 1 with the optical switch 30 in between, and the second input side optical transmission line 2 is arranged on the same axis. It is arranged parallel to the output optical transmission line 3 and on the same side as the output optical transmission line 3.
またモニタ側光伝送路４は、第２の入力側光伝送路２に
対して光スイッチ３０を挟んで対向して同一軸心上に、
即ち第１の入力側光伝送路１側に配設されている。The monitor side optical transmission line 4 is located on the same axis as the second input side optical transmission line 2, facing the second input side optical transmission line 2 with the optical switch 30 in between.
That is, it is arranged on the first input optical transmission line 1 side.
第１の切換素子１０の第１の入力側光伝送路１に対応す
る斜面にはハーフミラ膜１１を、第２の入力側光伝送路
２に対応する斜面にミラー膜１２をそれぞれ形成しであ
る。A half mirror film 11 is formed on the slope of the first switching element 10 corresponding to the first input optical transmission line 1, and a mirror film 12 is formed on the slope corresponding to the second input optical transmission line 2. .
また、第２の切換素子２０の第１の入力側光伝送路１に
対応する斜面にはミラー膜２１を、第２の入力側光伝送
路２に対応する斜面には、ハーフミラ膜２２をそれぞれ
形成しである。Further, a mirror film 21 is provided on the slope of the second switching element 20 corresponding to the first input optical transmission line 1, and a half mirror film 22 is provided on the slope corresponding to the second input optical transmission line 2. It is formed.
上述の如くに構成されているので、第２図（ａ）の如く
に、出力側光伝送路３に対応する位置に、第１の切換素
子１０があるときは、入力側光伝送路１より出射する光
信号の大部分はハーフミラ膜１１を透過して直進し、出
力側光伝送路３に入射する。Since the configuration is as described above, when the first switching element 10 is located at the position corresponding to the output side optical transmission line 3 as shown in FIG. 2(a), the input side optical transmission line 1 is Most of the emitted optical signal passes through the half-mirror film 11, travels straight, and enters the output optical transmission line 3.
そして、残りの光信号は、ハーフミラ膜１１で反射して
９０度光路を変えて、ミラー膜１２の内面側に投射され
、ミラー膜１２で全反射して、光路を９０度変えてモニ
タ側光伝送路４に入射する。The remaining optical signal is reflected by the half-mirror film 11, changes its optical path by 90 degrees, is projected onto the inner surface of the mirror film 12, is totally reflected by the mirror film 12, changes its optical path by 90 degrees, and becomes the monitor side light. It enters the transmission path 4.
この際、第２の入力側光伝送路２より光が出射されても
、この光はミラー膜１２で全反射して光スイッチ３０の
外に排出されるので、出力側光伝送路３に入射しないし
、またモニタ側光伝送路４にも入射しない。At this time, even if light is emitted from the second input optical transmission line 2, this light is totally reflected by the mirror film 12 and discharged outside the optical switch 30, so that it enters the output optical transmission line 3. It does not enter the optical transmission path 4 on the monitor side.
光スイッチ３０を駆動して、第２の切換素子２０が出力
側光伝送路３に対応する位置に移動させると、第２図（
ｂ）の如くに、第２の入力側光伝送路２より出射する光
信号の大部分は、ハーフミラ膜２２で反射して９０度光
路を変えて、ミラー膜２１に投射され、ミラー膜２１で
全反射して９０度光路を変え、出力側光伝送路３に入射
する。When the optical switch 30 is driven and the second switching element 20 is moved to a position corresponding to the output side optical transmission line 3, as shown in FIG.
As shown in b), most of the optical signal emitted from the second input optical transmission line 2 is reflected by the half-mirror film 22, changes the optical path by 90 degrees, and is projected onto the mirror film 21. It is totally reflected, changes the optical path by 90 degrees, and enters the output optical transmission line 3.
そして、残りの光信号は、ハーフミラ膜２２を透過して
直進しモニタ側光伝送路４に入射する。The remaining optical signal passes through the half-mirror film 22, travels straight, and enters the monitor-side optical transmission line 4.
この際、第１の入力側光伝送路１より光が出射されても
、この光はミラー膜２１で全反射して光スイッチ３０の
外に排出されるので、出力側光伝送路３に入射しないし
、またモニタ側光伝送路４にも入射しない。At this time, even if light is emitted from the first input optical transmission line 1, this light is totally reflected by the mirror film 21 and discharged outside the optical switch 30, so that it enters the output optical transmission line 3. It does not enter the optical transmission path 4 on the monitor side.
上述のように、この光スイッチ３０は、常に出力側光伝
送路３に伝送される光信号の一部をモニタ側光伝送路４
に伝送するので、出力側光伝送路３側に別個にモニタ用
の分岐回路を設ける必要がない。As described above, this optical switch 30 always transfers a part of the optical signal transmitted to the output side optical transmission line 3 to the monitor side optical transmission line 4.
Therefore, there is no need to separately provide a branch circuit for monitoring on the output optical transmission line 3 side.
なお、図示実施例は直角プリズム形のガラス体の斜面に
、ハーフミラ膜、ミラー膜を構成したものであるが、こ
のガラス体は直角プリズム形に限定されるものでなく、
直交する２枚のガラス板の面に形成してよいことは勿論
である。Although the illustrated embodiment has a half-mirror film and a mirror film formed on the slope of a glass body in the shape of a right-angle prism, this glass body is not limited to the shape of a right-angle prism.
Of course, it may be formed on the surfaces of two glass plates that are perpendicular to each other.
以上説明したように本発明は、光スイツチ部分で、モニ
タ用の光信号を抽出することができ、別に、゛モニタ用
の分岐回路を設ける必要がなく、装置の小形化、低コス
ト化ができるという実用上で優れた効果がある。As explained above, according to the present invention, an optical signal for monitoring can be extracted at the optical switch part, and there is no need to separately provide a branch circuit for monitoring, allowing the device to be made smaller and lower in cost. This has excellent practical effects.
第１図は本発明の１実施例の構成図、 第２図の（ａ）、 （ｂ）は光路図である。 図において、 １は第１の入力側光伝送路、 ２は第２の入力側光伝送路、 ３は出力側光伝送路、 ４はモニタ側光伝送路、 １０は第１の切換素子、 １１はハーフミラ膜、 １２はミラー膜、 ２０は第２の切換素子、 ２１はミラー膜、 ２２はハーフミラ膜、 ３０は光スイッチを示す。 二重９− Ｌスイーノう− ′ＩＡＩ 図 Ｊ、、４Ｅ ｓ月ｔｎ ｌＲｒ ＠茅？図 FIG. 1 is a configuration diagram of one embodiment of the present invention, (a) and (b) of FIG. 2 are optical path diagrams. In the figure, 1 is a first input optical transmission line; 2 is a second input optical transmission line; 3 is the output side optical transmission line, 4 is the monitor side optical transmission line, 10 is a first switching element; 11 is a half-mirror film, 12 is a mirror film; 20 is a second switching element; 21 is a mirror film; 22 is a half-mirror membrane, 30 indicates an optical switch. Double 9-L Suinou- 'IAI diagram J,,4E s月tn lRr @Kaya? figure
Claims (1)
第２の切換素子（２０）とが、頂角側が互いに反対側に
なる如く並列に配置して構成され、光伝送路に直交する
方向に往復運動することにより、光路を切換える光スイ
ッチ（３０）と、 第１の入力側光伝送路（１）に対して該光スイッチ（３
０）を挟んで対向して配設された出力側光伝送路（３）
と、 該出力側光伝送路（３）に並行して同じ側に配設された
第２の入力側光伝送路（２）と、 該第２の入力側光伝送路（２）に対して光スイッチ（３
０）を挟んで対向して配設されたモニタ側光伝送路（４
）とを備え、 該第１の切換素子（１０）の該第１の入力側光伝送路（
１）に対応する斜面にハーフミラ膜（１１）が、該第２
の入力側光伝送路（２）に対応する斜面にミラー膜（１
２）が形成され、 該第２の切換素子（２０）の該第１の入力側光伝送路（
１）に対応する斜面にミラー膜（２１）が、該第２の入
力側光伝送路（２）に対応する斜面にハーフミラ膜（２
２）がそれぞれ形成されてなることを特徴とするモニタ
光路付光スイッチ。[Scope of Claims] A first switching element (10) and a second switching element (20) formed in the shape of a right-angled prism are arranged in parallel so that their apex sides are opposite to each other, An optical switch (30) switches the optical path by reciprocating in a direction perpendicular to the optical transmission line;
Output side optical transmission line (3) arranged opposite to each other with 0) in between
and a second input optical transmission line (2) arranged on the same side in parallel with the output optical transmission line (3); and for the second input optical transmission line (2). Optical switch (3
The monitor side optical transmission line (4
) of the first switching element (10), the first input side optical transmission line (
A half-mirror film (11) is placed on the slope corresponding to the second
A mirror film (1) is placed on the slope corresponding to the input side optical transmission line (2) of the
2) is formed, and the first input side optical transmission line (
A mirror film (21) is provided on the slope corresponding to the second input side optical transmission path (2), and a half mirror film (21) is provided on the slope corresponding to the second input side optical transmission path (2).
An optical switch with a monitor optical path, characterized in that 2) is formed respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6562685A JPH0721582B2 (en) | 1985-03-29 | 1985-03-29 | Optical switch with monitor optical path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6562685A JPH0721582B2 (en) | 1985-03-29 | 1985-03-29 | Optical switch with monitor optical path |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61223816A true JPS61223816A (en) | 1986-10-04 |
| JPH0721582B2 JPH0721582B2 (en) | 1995-03-08 |
Family
ID=13292416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6562685A Expired - Fee Related JPH0721582B2 (en) | 1985-03-29 | 1985-03-29 | Optical switch with monitor optical path |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0721582B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6243322U (en) * | 1985-08-31 | 1987-03-16 | ||
| US6580845B1 (en) | 2000-08-11 | 2003-06-17 | General Nutronics, Inc. | Method and device for switching wavelength division multiplexed optical signals using emitter arrays |
| US6647173B2 (en) * | 2001-10-31 | 2003-11-11 | Hon Hai Precision Ind. Co., Ltd. | Optical switch with a moveable optical component |
| US6740864B1 (en) | 2002-04-30 | 2004-05-25 | Finisar Corporation | Method and apparatus for monitoring optical switches and cross-connects |
-
1985
- 1985-03-29 JP JP6562685A patent/JPH0721582B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6243322U (en) * | 1985-08-31 | 1987-03-16 | ||
| US6580845B1 (en) | 2000-08-11 | 2003-06-17 | General Nutronics, Inc. | Method and device for switching wavelength division multiplexed optical signals using emitter arrays |
| US6647173B2 (en) * | 2001-10-31 | 2003-11-11 | Hon Hai Precision Ind. Co., Ltd. | Optical switch with a moveable optical component |
| US6740864B1 (en) | 2002-04-30 | 2004-05-25 | Finisar Corporation | Method and apparatus for monitoring optical switches and cross-connects |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0721582B2 (en) | 1995-03-08 |
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