JPH02126239A - Optical switch - Google Patents
Optical switchInfo
- Publication number
- JPH02126239A JPH02126239A JP63280937A JP28093788A JPH02126239A JP H02126239 A JPH02126239 A JP H02126239A JP 63280937 A JP63280937 A JP 63280937A JP 28093788 A JP28093788 A JP 28093788A JP H02126239 A JPH02126239 A JP H02126239A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- signals
- control light
- section
- optical switch
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims description 36
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 239000013307 optical fiber Substances 0.000 description 10
- 239000000758 substrate Substances 0.000 description 7
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/21—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference
- G02F1/212—Mach-Zehnder type
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、光信号のスイッチングを制御光の導入により
行うようにした光スィッ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 in which switching of optical signals is performed by introducing control light.
〈従来の技術〉
従来から、光伝送路を切り換える等のために、制御光を
導入する方式の光スィッチが一部提案されている。<Prior Art> Conventionally, some optical switches that introduce control light have been proposed for switching optical transmission lines.
例えば、このような光スィッチとして、２本の光伝送路
を略中央部で近接させて結合部とし、概略形状Ｘ型とし
たものが挙げられ、このスイッチの場合、一方の入力側
からの光信号を、２本の出力側のいずれかに切り換えて
伝送することを主とするものであった。For example, an example of such an optical switch is one in which two optical transmission lines are brought close to each other at approximately the center to form a coupling part, and the shape is approximately X-shaped. The main purpose was to switch the signal to one of two output sides and transmit it.
〈発明が解決しようとする課題〉
ところが、光伝送路においては、入力側の２本の伝送路
に入れた光信号を、出力側の２本の伝送路に逆転させて
伝送させたい場合が生じる。<Problem to be solved by the invention> However, in optical transmission lines, there are cases where it is desired to reverse the optical signals input into the two transmission lines on the input side and transmit them to the two transmission lines on the output side. .
本発明は、このような要求にも答え得る光スィッチを提
供せんとするものである。The present invention aims to provide an optical switch that can meet these demands.
く課題を解決するための手段〉
か＼る本発明の特徴とする点は、２本の信号人力部と、
前記信号入力部に入った信号を均等に分岐する分岐部と
、前記分岐した信号の一方に制御光を入射させる制御光
導入部と、前記分岐した両信号を再度均等に分配する分
配部と、前記分配部からの両信号を夫々出力する２本の
信号出力部とからなる光スィッチにある。Means for Solving the Problems The present invention is characterized by two signal manpower sections,
a branching section that evenly branches the signals that have entered the signal input section; a control light introduction section that makes control light enter one of the branched signals; and a distribution section that evenly distributes both the branched signals again; The optical switch includes two signal output sections that respectively output both signals from the distribution section.
〈作用〉
上記構成から、２本の信号入力部に入力された光信号は
、制御光導入部からの制御光の導入により、逆転されて
、あるいは切り換えて、２本の信号出力部に出力される
。<Operation> From the above configuration, the optical signals input to the two signal input sections are reversed or switched and output to the two signal output sections by introducing the control light from the control light introduction section. Ru.
〈実施例〉
第１図は本発明に係る光スイフチの一実施例を示したも
のである。<Embodiment> FIG. 1 shows an embodiment of an optical swifter according to the present invention.
この光スィッチＳ、において、１，２は２本の信号入力
部、３はこの信号入力部１． ２に入った信号を均等に
分岐する分岐部、４はこの分岐した信号の一方に制御光
を入射させる制御光導入部、５は上記分岐した両信号を
再度均等に分配する分配部、６．７はこの分配部５から
の両信号を夫々出力する２本の信号出力部である。In this optical switch S, 1 and 2 are two signal input sections, and 3 is the signal input section 1. 2, a branching section for equally branching the input signal; 4, a control light introduction section for inputting a control light into one of the branched signals; 5, a distribution section for equally distributing both of the branched signals again; 6. Reference numeral 7 denotes two signal output sections that output both signals from the distribution section 5, respectively.
そして、本光スィッチＳＩの場合、上記２本の信号入力
部１． ２、制御光導入部４および２本の信号出力部６
．７は、通常の光ファイバあるいは非線形能の大きい半
導体ドープガラス等で形成され、また、上記分岐部３２
分配部５は、例えば第２図に示したような光フアイバカ
ブラ８からなる。In the case of this optical switch SI, the two signal input sections 1. 2. Control light introducing section 4 and two signal output sections 6
．． 7 is formed of a normal optical fiber or semiconductor-doped glass with large nonlinearity, and the branch part 32
The distribution section 5 includes, for example, an optical fiber coupler 8 as shown in FIG.
このカブラ８は、２本の光ファイバ９．９からなり、例
えば溶融延伸法等により、中央部のコア同志を近接させ
て光の結合部１０を形成している。This coupler 8 is made up of two optical fibers 9.9, and the cores in the center are brought close to each other by, for example, a melt-drawing method to form a light coupling part 10.
このカブラ８としては、通常の石英材料あるいは非線形
能の大きい半導体ドープガラス等を用いたシングルモー
ドファイバカブラや偏波型カブラ等が挙げられる。Examples of the coupler 8 include a single-mode fiber coupler, a polarization type coupler, and the like, which are made of ordinary quartz material, semiconductor-doped glass with high nonlinearity, or the like.
第３図は本発明に係る光スィッチの他の実施例を示した
ものである。FIG. 3 shows another embodiment of the optical switch according to the present invention.
この光スィッチＳ２も、基本的には、上記光スイフチＳ
、と同様であるが、この実施例の場合は、２本の信号入
力部１．２、分岐部３および制御光導入部４を同一の基
板１１上に導波路としｔ形成すると共に、分配部５およ
び２本の信号出力部６゜７も同一の基板１２上に導波路
として形成し、両店板１１．１２間に２本の光ファイバ
１３．１４を用いて光の位相差発生部としたものである
。This optical switch S2 is basically also the optical switch S2.
, but in the case of this embodiment, the two signal input sections 1.2, the branch section 3, and the control light introduction section 4 are formed as waveguides on the same substrate 11, and the distribution section 5 and two signal output sections 6.7 are also formed as waveguides on the same substrate 12, and two optical fibers 13.14 are used between the two optical fibers 11.12 to form optical phase difference generation sections and This is what I did.
上記基板１１．１２は、例えば第４図（Ａ）〜（Ｂ）に
示した如くで、その材料としては、ＬｉＮ ｂ ０３
、Ｌ Ｉ Ｔ ａ Ｏｘ等が使用でき、導波路の形成に
あたっては、Ｔｉ拡散法等を用いればよい。The substrates 11 and 12 are, for example, as shown in FIGS. 4(A) and 4(B), and their material is LiN b 03
, L I T a Ox, etc. can be used, and a Ti diffusion method or the like may be used to form the waveguide.
第５図は本発明に係る光スィッチのさらに別の実施例を
示したものである。FIG. 5 shows still another embodiment of the optical switch according to the present invention.
この光スィッチＳ、も、基本的には、上記光スィッチＳ
、と同様であるが、この実施例の場合は、すべての構成
部分を１個の基板１５上に導波路として形成しである。This optical switch S is also basically the optical switch S
, but in the case of this embodiment, all the constituent parts are formed as a waveguide on one substrate 15.
その形成方法等は、上記光スィッチＳ２の場合と同様で
ある。The method of forming the optical switch S2 is the same as that of the optical switch S2.
以上のようにして構成された各光スィッチＳ、〜３の使
用にあたっては、いずれも図示の如く、２本の信号入力
部１．２および２本の信号出力部６゜７には光伝送路を
なす光ファイバＦ・・・を接続し、また、制御光導入部
４には制御光導入用の光ファイバＦｃを接続する。When using each of the optical switches S and -3 configured as described above, as shown in the figure, the two signal input sections 1.2 and the two signal output sections 6.7 are connected to optical transmission lines. Optical fibers F .
そして、例えば分岐部３の分岐率および分配部５の分配
率を夫々５０％とした場合、通常、２本の信号入力部１
．２に入力された２つの信号Ａ。For example, if the branching rate of the branching section 3 and the distribution rate of the distributing section 5 are each 50%, normally two signal input sections 1
．． Two signals A input to 2.
Ｂは、分岐と再分配を通じて、２本の信号出力部６．７
にそのまま伝送されるわけであるが、制御光導入用の光
ファイバＦｃから制御光導入部４に制御信号Ｃを導入す
ると、２本の信号出力部６゜７側では、図示のように逆
転した出力が得られる。B has two signal output parts 6.7 through branching and redistribution.
However, when the control signal C is introduced from the optical fiber Fc for control light introduction into the control light introduction part 4, the two signal output parts 6°7 side are reversed as shown in the figure. I get the output.
つまり、制御光の導入により、スイッチングが行われる
。In other words, switching is performed by introducing the control light.
なお、上記実施例では、２本の信号入力部１゜２の両方
に信号Ａ、Ｂを入力させる場合であったが、本発明は、
これに限定されず、一方に人力された信号、例えば信号
Ａを、信号出力部６に出力させたり、あるいは信号出力
部７に出力させるというような切り換えも可能である。In the above embodiment, the signals A and B are input to both of the two signal input sections 1.2, but the present invention
The present invention is not limited to this, and it is also possible to switch such that a signal manually inputted to one side, for example, signal A, is outputted to the signal output section 6 or outputted to the signal output section 7.
因みに、本発明者等が、第５図に示したように１個の基
板に全導波路を構成した光スィッチを下記の条件で作成
し、２本の信号入力部に、■、３μｍＬＤのレーザによ
る信号光を入れ、また、制御光導入部４に、やはり１．
０６μｍのＹＡＧレーザを用いて２０ｎＳ、ＩＫＷのパ
ルスからなる制御光を入れたところ、逆転されて、２本
の信号出力部から出力された。このスイッチングは、連
続光の場合１５０Ｗ以上のパワーで可能であった。Incidentally, the present inventors created an optical switch in which all waveguides were configured on one substrate as shown in Fig. 5 under the following conditions, and attached a 3 μm LD laser to the two signal input sections. Also, the signal light from 1. is input into the control light introducing section 4.
When a control light consisting of a 20 nS, IKW pulse was input using a 0.6 μm YAG laser, the signal was reversed and outputted from the two signal output sections. This switching was possible with a power of 150 W or more in the case of continuous light.
基板材料＝ＬｉＮｂＯｓ、導波路−Ｔｉ拡散導波路、各
導波路中＝６μｍ、分岐部および分配部（結合部）にお
ける導波路間隔−４μｍ、分岐部と分配部間の間隔−５
０ｍｍであった。Substrate material = LiNbOs, waveguide - Ti diffused waveguide, inside each waveguide = 6 μm, waveguide spacing at branch and distribution portions (coupling portion) -4 μm, spacing between branch and distribution portions -5
It was 0 mm.
〈発明の効果〉
以上の説明から明らかなように本発明によれば、２本の
信号入力部、分岐部、制御光導入部、分配部および２本
の信号出力部の夫々を組み合わせであるため、２本の信
号入力部に入力された光信号は、制御光導入部からの制
御光の導入により、逆転されて、あるいは切り換えて、
２本の信号出力部に出力することができる、スイッチン
グ機能の可能な優れた光スィッチを提供することができ
る。<Effects of the Invention> As is clear from the above description, according to the present invention, two signal input sections, a branching section, a control light introduction section, a distribution section, and two signal output sections are each combined. , the optical signals input to the two signal input sections are reversed or switched by introducing the control light from the control light introduction section,
It is possible to provide an excellent optical switch capable of outputting signals to two signal output sections and capable of a switching function.
第１図は本発明に係る光スィッチの一実施例を示した概
略図、第２図は第１図の光スィッチに用いる光フアイバ
カプラの一例を示した斜視図、第３図は本発明に係る光
スィッチの他の実施例を示した概略図、第４図（Ａ）〜
（Ｂ）は第３図光スイツチに用いる各導波路基板の斜視
図、第５図は本発明に係る光スィッチのさらに別の実施
例を示した概略図である。
図中、
１、 ２・・・・信号入力部、
３・・・・分岐部、
４・・・・制御光導入部、
５・・・・分配部、
６．７・・・・信号出力部、
Ｓ−３・・・・光スィッチ、
Ｆ・・・・光ファイバ、
Ｆｃ・・・・制御先導入用の光ファイバ、Ａ、Ｂ、Ｃ・
・・・信号、FIG. 1 is a schematic diagram showing an embodiment of an optical switch according to the present invention, FIG. 2 is a perspective view showing an example of an optical fiber coupler used in the optical switch of FIG. 1, and FIG. Schematic diagrams showing other embodiments of such an optical switch, FIG. 4(A)-
(B) is a perspective view of each waveguide substrate used in the optical switch shown in FIG. 3, and FIG. 5 is a schematic diagram showing still another embodiment of the optical switch according to the present invention. In the figure, 1, 2...signal input section, 3...branch section, 4...control light introduction section, 5...distribution section, 6.7...signal output section , S-3...Optical switch, F...Optical fiber, Fc...Optical fiber for introducing control destination, A, B, C...
···signal,
Claims (1)
等に分岐する分岐部と、前記分岐した信号の一方に制御
光を入射させる制御光導入部と、前記分岐した両信号を
再度均等に分配する分配部と、前記分配部からの両信号
を夫々出力する２本の信号出力部とからなる光スイッチ
。Two signal input sections, a branching section that evenly branches the signals that have entered the signal input section, a control light introducing section that inputs control light into one of the branched signals, and a control light introducing section that inputs the control light into one of the branched signals, An optical switch comprising a distribution section that distributes the distribution evenly, and two signal output sections that output both signals from the distribution section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63280937A JPH02126239A (en) | 1988-11-07 | 1988-11-07 | Optical switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63280937A JPH02126239A (en) | 1988-11-07 | 1988-11-07 | Optical switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02126239A true JPH02126239A (en) | 1990-05-15 |
Family
ID=17631999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63280937A Pending JPH02126239A (en) | 1988-11-07 | 1988-11-07 | Optical switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02126239A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07168217A (en) * | 1993-12-16 | 1995-07-04 | Nec Corp | Light/light 2x2 switch |
-
1988
- 1988-11-07 JP JP63280937A patent/JPH02126239A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07168217A (en) * | 1993-12-16 | 1995-07-04 | Nec Corp | Light/light 2x2 switch |
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