JPS60133407A - Optical switch device - Google Patents
Optical switch deviceInfo
- Publication number
- JPS60133407A JPS60133407A JP24164383A JP24164383A JPS60133407A JP S60133407 A JPS60133407 A JP S60133407A JP 24164383 A JP24164383 A JP 24164383A JP 24164383 A JP24164383 A JP 24164383A JP S60133407 A JPS60133407 A JP S60133407A
- Authority
- JP
- Japan
- Prior art keywords
- light
- wavelength
- demultiplexer
- multiplexer
- interference thin
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
- G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
- G02B6/29362—Serial cascade of filters or filtering operations, e.g. for a large number of channels
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
- Optical Communication System (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は光スイツチ装置の改良に関する。[Detailed description of the invention] The present invention relates to improvements in optical switch devices.
光スイツチ装置は、発光源から光ファイバで伝送されて
きた波長多重の光を複数の分波用干渉薄膜フィルタで各
波長の光に夫々分波し、各波長の光を各党に対応する遮
光部材から成る光スィッチに通して該光スィッチで透過
又は遮断を選択せしめ、各波長の光の有無によって所要
の信号状態を発生させる如く構成された装置である。各
光スィッチを通過した各波長の光は合波用干渉薄膜フィ
ルタで再び多重化され、その後光スイッチ装置から出光
され、光ファイバで処理回路へ伝送される。An optical switch device separates wavelength-multiplexed light transmitted from a light source through an optical fiber into light of each wavelength using a plurality of interference thin film filters, and separates the light of each wavelength into a light shielding member corresponding to each party. This device is configured to select transmission or blocking through an optical switch consisting of a light switch, and generate a desired signal state depending on the presence or absence of light of each wavelength. The light of each wavelength that has passed through each optical switch is multiplexed again by a multiplexing interference thin film filter, and then outputted from the optical switch device and transmitted to a processing circuit via an optical fiber.
上記光スイツチ装置には上述の如く複数の光スィッチが
設けられるが、この光スィッチは、通常、作動状態の検
出を要する手段、例えば自動車に適用した場合にはホー
ンスイッチ、ウィンカランプスイッチ等の如き手段と連
動して開閉動作全行うように構成される。従ってこの光
スイツチ装置を利用すれば波長多重された光における各
波長の光の伝送状態によって各種手段に係る多数の作動
状態を検出することが可能となる。The above-mentioned optical switch device is provided with a plurality of optical switches as described above, but these optical switches are usually a means that requires detection of the operating state, for example, when applied to an automobile, a horn switch, a blinker lamp switch, etc. It is configured to perform all opening and closing operations in conjunction with the means. Therefore, by using this optical switch device, it is possible to detect a large number of operating states of various means based on the transmission state of each wavelength of wavelength-multiplexed light.
ところで、従来、光スイツチ装置における光スィッチの
個数は分波器の構造上の制約から最大限波長多重された
光の数によって定まり、このため光スィッチを介して検
出することのできる対象物の個数も波長多重する光の数
で定まるものであった。By the way, conventionally, the number of optical switches in an optical switch device is determined by the maximum number of wavelength-multiplexed lights due to structural constraints of the demultiplexer, and therefore the number of objects that can be detected via the optical switch is determined by the maximum number of wavelength-multiplexed lights. was determined by the number of wavelength-multiplexed lights.
本発明の目的は、光スイツチ装置における分波器につい
て新しい構造を提供し、光スイツチ装置において、従来
の光スイツチ装置に比較して、同一数の分波用干渉薄膜
フィルりで２倍の数の光スィッチを備えることができ、
以って従来通りの簡易な構造で光スイツチ数を倍とする
ことができ、これによって経済的な使用及び装置の小型
化を企図することにある。An object of the present invention is to provide a new structure for a demultiplexer in an optical switch device, and to provide a new structure for a demultiplexer in an optical switch device, in which the same number of demultiplexing interference thin film filters can be used in the optical switch device, but twice as many as in the conventional optical switch device. can be equipped with a light switch,
Therefore, it is possible to double the number of optical switches with a conventional simple structure, thereby achieving economical use and miniaturization of the device.
而して上記目的を実現すべく本発明は、前記光スイツチ
装置を、光ファイノくで伝送されてくる波長多重光（又
は白色光）を夫々に別個に入射せしめる入射面を有する
と共に該波長多重光の各波長の光に対応し且つ両面分波
作用を有する分波素子をに再度多重化する２個の合波器
と、上記分波器と該２個の合波器の夫々の間に配設され
た、上記各波長の光を個別に透過又は遮断する複数の開
閉手段とによって構成したことをその要旨とする。In order to achieve the above-mentioned object, the present invention provides an optical switch device having an entrance surface for individually inputting wavelength-multiplexed light (or white light) transmitted through an optical fiber, and a two multiplexers that remultiplex a demultiplexing element that corresponds to each wavelength of light and has a double-sided demultiplexing function, and between the demultiplexer and each of the two multiplexers; The gist thereof is that it is constructed by a plurality of opening/closing means arranged to individually transmit or block light of each of the wavelengths.
以下に本発明の好適一実施例を添付図面に基づいて説明
する。A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.
図面は本発明に係る光スイツチ装置の構成を概略的に示
したものである。The drawing schematically shows the configuration of an optical switch device according to the present invention.
本図において、波線は光の進行経路を示し、本来光は光
ファイバの如き元伝送路に案内されて伝送されるもので
あるが、簡易図示化のために図中省略されている。Ｌｌ
は入力光であり、本実施例では波長λｌ、λ２．λ３の
光から成る波長多重光である。In this figure, the wavy lines indicate the traveling path of light, and although light is originally guided and transmitted through a source transmission path such as an optical fiber, it is omitted from the figure for the sake of simple illustration. Ll
are input lights, and in this embodiment, the wavelengths λl, λ2 . This is wavelength multiplexed light consisting of light of λ3.
人力光Ｌ１は、ハーフミラ−１によって２と３の２つの
経路を通る光に分離され、光スイツチ装置部４に入力さ
れるよう構成される。この場合において、上記ハーフミ
ラ−１の代わシに光カプラ全使用することもでき、単に
入力光Ｌ１を２つに分離する手段であれば何でも適用で
きる。The human power light L1 is separated by a half mirror 1 into lights passing through two paths 2 and 3, and is configured to be input to the optical switch device section 4. In this case, an optical coupler can be used instead of the half mirror 1, and any means can be used as long as it simply separates the input light L1 into two.
光スイツチ装置部４は、分波器５と、２つの合波器６，
７と、分波器５と各合波器６，１との間において各波長
の光に対応して設けられた移動自在な遮光部材８・・・
とから構成される。上記分波器５は光の波長多重数に対
応させて３つの分波用干渉薄膜フィルタ５１，５２，５
３に一列に並べることによって構成されるものであり、
本実施例には波長λｌ、λ３を透過し且つ波長λ２を反
射し、干渉薄膜フィルタ５１は波長λ２．λ３を透過し
且つ波長λ１を反射するという特性を有している。そし
て、これらの干渉薄膜フィルタ５１，５２．５３は、表
裏いずれの面に波長多重光が入射したとしても上述の如
き特性を発揮するように形成されている。The optical switch device section 4 includes a demultiplexer 5, two multiplexers 6,
7, and a movable light shielding member 8 provided between the demultiplexer 5 and each multiplexer 6, 1 corresponding to each wavelength of light...
It consists of The demultiplexer 5 includes three demultiplexing interference thin film filters 51, 52, 5 corresponding to the number of wavelengths of light to be multiplexed.
It is constructed by arranging 3 in a row,
In this embodiment, the interference thin film filter 51 transmits wavelengths λl and λ3 and reflects wavelengths λ2. It has the characteristic of transmitting wavelength λ3 and reflecting wavelength λ1. These interference thin film filters 51, 52, and 53 are formed so as to exhibit the above-mentioned characteristics even when wavelength-multiplexed light is incident on either the front or back surface.
従って分波器５においては、両端面５ａ、５ｂに波長多
重光ＬＸの入射面が形成されておシ、前述した経路２，
３を案内されてくる入力光Ｌ１は、図示される如く、経
路２では端面５ａに、経路３では上記分波器５に対して
、その両側にて並列に、合波用干渉薄膜フィルタ６１，
６２，６３，７１゜７２．７３から成る前記合波器６．
了が夫々配設され、合波器６，７では分波器５０分分波
用干渉薄膜フィルタ１，５２，５３０夫々の両面に対向
させて合波用干渉薄膜フィルり６１，６２，６３゜７１
．７２，７３が設けられている。そして、分波用干渉薄
膜フィルタ５１，５２，５３と各合波器６，７の合波用
干渉薄膜フィルり６１，６２゜６３．７１，７２，７３
の夫々の間には、移動自在であることによシその間を通
過する各波長の光を透過又は遮断する遮光部材８・・・
が配設され、この遮光部材８・・・は夫々個別に対応す
る所定の操作手段等と連動して各波長の光の透過ａ遮断
を行う光スィッチを成すように構成されている。Therefore, in the demultiplexer 5, incidence surfaces for the wavelength-multiplexed light LX are formed on both end faces 5a and 5b, and the above-mentioned path 2,
As shown in the figure, the input light L1 guided through the waveguide 3 is connected to the end face 5a in the path 2, and to the demultiplexer 5 in the path 3, in parallel on both sides of the multiplexing interference thin film filter 61,
The multiplexer 6 consisting of 62, 63, 71°72.73.
In the multiplexers 6 and 7, multiplex interference thin film filters 61, 62, and 63 degrees are placed opposite to both sides of the demultiplexer 50 and the demultiplexing interference thin film filters 1, 52, and 530, respectively. 71
．． 72 and 73 are provided. Then, the interference thin film filters 51, 52, 53 for demultiplexing and the interference thin film filters 61, 62 for each of the multiplexers 6, 7 63.71, 72, 73
Between each of the light shielding members 8, which are movable, transmit or block light of each wavelength passing between them.
The light blocking members 8... are configured to form optical switches that block transmission a of light of each wavelength in conjunction with respective corresponding predetermined operating means.
以上の構成において、本発明に係る光スイツチ装置は次
のように作用する。In the above configuration, the optical switch device according to the present invention operates as follows.
３つの発光源（不図示）から発つせられた波長λ１．λ
２．λ３の各光は多重化され〜入力光Ｌ１となつ一一一
−１＋Ｐπｉ １十専Ｔ−ｒ汁ノ為−フＳう−１で２つ
に分離され、１つの入力光Ｌ１は経路２を通って端面５
ａから分波器５に入り、他の入力光Ｌ１は経路３ｆ：通
って端面５ｂから分波器５に入る。端面５ａから分波器
５に入った入力光Ｌ１は、干渉薄膜フィルタ５１，５２
，５３の図中右側面によって上述の如く各波長λｌ、λ
２．λ３の光に分離され、夫々対応する遮光部材８・・
・から成る光スィッチを通過し、合波器６に至る。各光
スイツチ全通過した各波長の光は合波器６０合合波用干
渉薄膜フィルタ１，６２．６３で再び多重化され、波長
多重光となって経路９で出力される。上記において、分
波器５と合波器６の間に配設された遮光部材８・・・は
不図示の対応する操作手段等に連動して開閉し透過又は
遮断の状態にある。従って合波器６から出力される波長
多重光における各波長λ１．λ２．λ８の光の有無によ
って検出対象物の状態に係る所定の検出信号を得ること
が可能となる。Wavelength λ1. emitted from three light emitting sources (not shown). λ
2. Each light of λ3 is multiplexed and separated into two by the input light L1 and the input light L1. through end face 5
The other input light L1 enters the splitter 5 from the end face 5b through the path 3f. The input light L1 entering the demultiplexer 5 from the end face 5a passes through interference thin film filters 51 and 52.
, 53, each wavelength λl, λ
2. The light is separated into light of λ3, and the corresponding light shielding members 8...
It passes through an optical switch consisting of . and reaches the multiplexer 6. The light of each wavelength that has completely passed through each optical switch is multiplexed again by the multiplexer 60 and the multiplexing interference thin film filters 1, 62, and 63, and is outputted through a path 9 as wavelength-multiplexed light. In the above, the light shielding members 8 disposed between the demultiplexer 5 and the multiplexer 6 open and close in conjunction with corresponding operating means (not shown), and are in a transmitting or blocking state. Therefore, each wavelength λ1 in the wavelength multiplexed light output from the multiplexer 6. λ2. Depending on the presence or absence of light of λ8, it is possible to obtain a predetermined detection signal related to the state of the object to be detected.
他方端面５ｂから分波器５に入った入力光Ｌ１は、干渉
薄膜フィルタ５１，５２．５３の前述した面に対し反対
側の面を利用して各波長λ１．λ２．λ３の光に分離さ
れ、合波器７、及び分波器５と合波器７０間の遮光部材
８・・・によって前記と同様にして、波長λ１．λ２．
λ３の光の有無によって他の検出対象物の状態に係る所
定の検出信号を成す波長多重光として経路１０で出力さ
れることになる。The input light L1 entering the demultiplexer 5 from the other end surface 5b is divided into wavelengths λ1 . λ2. The wavelengths λ1, . . . are separated into wavelengths λ1, . λ2.
Depending on the presence or absence of the light of λ3, the light is output on the path 10 as wavelength-multiplexed light forming a predetermined detection signal related to the state of another object to be detected.
上記の如（本発明に係る光スイツチ装置によれば、分波
用干渉薄膜フィルタ５Ｌ５２，５３の両面に分波作用を
持たせるようにしたため、１個の干渉薄膜フィルタ５１
，５２．５３であっても従来装置に比較し２倍の個数の
遮光部材８から成る光スィッチを設けることができるよ
うになった。As described above (according to the optical switch device according to the present invention), since both surfaces of the interference thin film filters 5L52 and 53 for demultiplexing have a demultiplexing effect, one interference thin film filter 51
, 52.53, it is now possible to provide an optical switch consisting of twice the number of light shielding members 8 compared to the conventional device.
その上に、本発明は単に分波用干渉薄膜フィルタの分波
機能に若干の変更を施すだけで実現でき、１個で従来の
光スイツチ装置の２つ分の働きを有するため、経済的に
も、装置の小型化の面においても有利である。Furthermore, the present invention can be realized by simply making slight changes to the demultiplexing function of the demultiplexing interference thin film filter, and since one piece has the functions of two conventional optical switch devices, it is economical. This is also advantageous in terms of miniaturization of the device.
本発明に係る光スイツチ装置は、上記実施例に限定され
るものではなく、例えば波長多重数が更に増した場合、
また２個の波長多重光用の光源装置を別個に設ける場合
にも適用できることは勿論である。The optical switch device according to the present invention is not limited to the above embodiments. For example, when the number of wavelengths multiplexed is further increased,
It goes without saying that the present invention can also be applied to the case where two light source devices for wavelength multiplexed light are provided separately.
なお上記各合波器６，７から取り出された波長多重光は
不図示の信号処理回路へ伝送されて、処理され、当該信
号に基づいて所要の制御等が実行される。Note that the wavelength-multiplexed light taken out from each of the multiplexers 6 and 7 is transmitted to a signal processing circuit (not shown) and processed, and necessary control etc. are executed based on the signals.
以上の説明で明らかなように本発明によれば、光スイツ
チ装置において、同一数の分波用干渉薄膜フィルタを用
いて光スイツチ数を２倍にすることができるため、経済
的な使用、装置の小型化に資する等の効果全発揮する。As is clear from the above description, according to the present invention, the number of optical switches can be doubled by using the same number of interference thin film filters in an optical switch device, resulting in economical use and equipment. Fully effective, such as contributing to downsizing.
図面は本発明に係る光スイツチ装置の構成を概略的に示
した構成図である。
図面中、１はハーフミラ−１４は光スイツチ装置部、５
は分波器、６，７は合波器、８・・・は遮光部材、５１
〜５３は分波用干渉薄膜フィルタ、６１〜６３．７１〜
７３は合波用干渉薄膜フィルタ、Ｌｌは波長多重光であ
る。The drawing is a block diagram schematically showing the structure of an optical switch device according to the present invention. In the drawing, 1 is a half mirror, 14 is an optical switch device section, and 5 is a half mirror.
is a demultiplexer, 6, 7 is a multiplexer, 8... is a light shielding member, 51
~53 is a demultiplexing interference thin film filter, 61~63.71~
73 is an interference thin film filter for multiplexing, and Ll is wavelength multiplexed light.
Claims (1)
光を個別の開閉手段で透過又は遮断し、合波器で再度多
重化するように構成される光スイツチ装置において、 上記波長多重光を夫々別個に入射せしめる入射面を有し
、該波長多重光の各波長の光に対応した両面分波作用を
有する分波素子を備える分波器と、 上記各波長多重光を別々に再度多重化する２個の合波器
と、 上記分波器と該２個の合波器の夫々の間に配設された、
上記各波長の光を個別に透過又は遮断する複数の開閉手
段と、 から成ることを特徴とする光スイツチ装置。[Scope of Claims] A configuration in which the wavelength-multiplexed light is demultiplexed into light of each wavelength by a demultiplexer, the light of each wavelength is transmitted or blocked by individual opening/closing means, and multiplexed again by a multiplexer. An optical switch device comprising: a demultiplexer having an entrance surface through which each of the wavelength-multiplexed lights enters separately, and a demultiplexer having a double-sided demultiplexing function corresponding to each wavelength of the wavelength-multiplexed light; , two multiplexers that separately multiplex each of the wavelength-multiplexed lights again, and disposed between the demultiplexer and each of the two multiplexers,
An optical switch device comprising: a plurality of opening/closing means that individually transmit or block light of each wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24164383A JPS60133407A (en) | 1983-12-21 | 1983-12-21 | Optical switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24164383A JPS60133407A (en) | 1983-12-21 | 1983-12-21 | Optical switch device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60133407A true JPS60133407A (en) | 1985-07-16 |
| JPH0464042B2 JPH0464042B2 (en) | 1992-10-13 |
Family
ID=17077362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24164383A Granted JPS60133407A (en) | 1983-12-21 | 1983-12-21 | Optical switch device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60133407A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0965869A2 (en) * | 1998-06-18 | 1999-12-22 | Alps Electric Co., Ltd. | Optical switch and optical communication system using the same |
| EP0973054A2 (en) * | 1998-07-13 | 2000-01-19 | Alps Electric Co., Ltd. | Compound optical switch and optical communication device using the compound optical switch |
| EP1195867A1 (en) * | 2000-09-04 | 2002-04-10 | Lucent Technologies Inc. | Method for wavelenght stabilization of light emission from emission devices and arrangement therefor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5438050U (en) * | 1977-08-22 | 1979-03-13 | ||
| JPS56149840A (en) * | 1980-04-23 | 1981-11-19 | Mitsubishi Electric Corp | Operation detecting system of optical fiber terminal equipment |
-
1983
- 1983-12-21 JP JP24164383A patent/JPS60133407A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5438050U (en) * | 1977-08-22 | 1979-03-13 | ||
| JPS56149840A (en) * | 1980-04-23 | 1981-11-19 | Mitsubishi Electric Corp | Operation detecting system of optical fiber terminal equipment |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0965869A2 (en) * | 1998-06-18 | 1999-12-22 | Alps Electric Co., Ltd. | Optical switch and optical communication system using the same |
| EP0965869A3 (en) * | 1998-06-18 | 2000-08-23 | Alps Electric Co., Ltd. | Optical switch and optical communication system using the same |
| US6297896B1 (en) | 1998-06-18 | 2001-10-02 | Alps Electric Co., Ltd. | Optical switch and optical communication system using the same |
| EP0973054A2 (en) * | 1998-07-13 | 2000-01-19 | Alps Electric Co., Ltd. | Compound optical switch and optical communication device using the compound optical switch |
| EP0973054A3 (en) * | 1998-07-13 | 2002-02-20 | Alps Electric Co., Ltd. | Compound optical switch and optical communication device using the compound optical switch |
| EP1195867A1 (en) * | 2000-09-04 | 2002-04-10 | Lucent Technologies Inc. | Method for wavelenght stabilization of light emission from emission devices and arrangement therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0464042B2 (en) | 1992-10-13 |
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