JPS6060604A - Optical signal multiplexer and demultiplexer - Google Patents
Optical signal multiplexer and demultiplexerInfo
- Publication number
- JPS6060604A JPS6060604A JP16985283A JP16985283A JPS6060604A JP S6060604 A JPS6060604 A JP S6060604A JP 16985283 A JP16985283 A JP 16985283A JP 16985283 A JP16985283 A JP 16985283A JP S6060604 A JPS6060604 A JP S6060604A
- Authority
- JP
- Japan
- Prior art keywords
- lens surface
- optical signal
- dichroic mirror
- light emitting
- straight line
- 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
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
- G02B6/29379—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 characterised by the function or use of the complete device
- G02B6/2938—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 characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM
-
- 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
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2817—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using reflective elements to split or combine optical signals
-
- 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
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4246—Bidirectionally operating package structures
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Communication System (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は光信号混合、分波器に関する。[Detailed description of the invention] The present invention relates to optical signal mixing and demultiplexing.
従来の光信号混合器は、第１図に示すように、１つの発
光ダイオード１がらの光をコリメートレンズ２で平行光
にしてダイクロイックミラー３で反射させ、この反射光
と、他の発光ダイオード４からコリメートレンズ５で平
行にされ、さらに前記ダイクロイックミラー３を透過し
て来た光とを、集光レンズ６で集光し、光ファイバ７な
どの受光部に入射するようにしも・る。したがって、各
発光タイオード１，４毎にコリメートレンズ２，５が必
要であり、また受光部には集光レンズ７を配置する必要
があった。As shown in FIG. 1, a conventional optical signal mixer converts the light from one light emitting diode 1 into parallel light using a collimating lens 2 and reflects it on a dichroic mirror 3, and then combines this reflected light with another light emitting diode 4. The light is collimated by a collimating lens 5 and further transmitted through the dichroic mirror 3, and the light is condensed by a condensing lens 6 and made to enter a light receiving section such as an optical fiber 7. Therefore, collimating lenses 2 and 5 were required for each light emitting diode 1 and 4, and a condensing lens 7 had to be disposed in the light receiving section.
本発明は、このような事情に鑑みてなされたものであり
、簡単な構成で、コリメートレンズや集光レンズを省略
し得るようにし、部品点数低減による製造コストの低減
と、小型簡略化を図った光信号混合、分波器を提供する
ことを目的とする。The present invention has been made in view of these circumstances, and has a simple configuration that allows the collimating lens and condensing lens to be omitted, thereby reducing manufacturing costs by reducing the number of parts and simplifying the size. The purpose is to provide an optical signal mixer and demultiplexer.
以下、図面により本発明の実施例について説明すると、
先ず第１実施例を示す第２図において、２つの異なる波
長の光信号が２つの発光部としての発光ダイオ−１−１
０，１１から照射され、それらの光信号が混合されて受
光部としての光ファイバ１２に入射される。Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, in FIG. 2 showing the first embodiment, optical signals of two different wavelengths are transmitted to two light emitting diodes 1-1 as light emitting units.
0 and 11, and their optical signals are mixed and input into an optical fiber 12 as a light receiving section.
一方の発光ダイオード１０かもの光信号を反射するダイ
クロイックミラー１３を相互の接合面に形成して２つの
プリズム１４．１５が相互に貼着される。両プリズム１
４．１５は合成樹脂あるいはガラスによって形成され、
ダイクロイックミラー１３は一方のプリズムたとえば１
５に蒸着して形成される。The two prisms 14 and 15 are bonded to each other by forming a dichroic mirror 13 that reflects an optical signal from one of the light emitting diodes 10 on their joint surfaces. Both prisms 1
4.15 is made of synthetic resin or glass,
The dichroic mirror 13 has one prism, for example 1
5 by vapor deposition.
これらのプリズム１４．１５は、発光ダイオード１１お
よび光ファイバ１２を結ぶ仮想直線に対して前記接合面
すなわちダイクロイックミラー１３が４５度傾斜するよ
うに貼着されており、前記直線に沿う一端（第２図の下
端）のプリズム１４に該直線に沿つ外方に向けて凸のレ
ンズ面１６が形成される。このレンズ面１６の焦点位置
に、ダイクロイックミラー１３を透過し得る波長の光信
号を発光する発光ダイオード１１が配置される。These prisms 14 and 15 are attached so that the bonding surface, that is, the dichroic mirror 13 is inclined at 45 degrees with respect to a virtual straight line connecting the light emitting diode 11 and the optical fiber 12, and one end along the straight line (the second A lens surface 16 that is convex toward the outside along the straight line is formed on the prism 14 (at the lower end of the figure). A light emitting diode 11 that emits an optical signal with a wavelength that can be transmitted through the dichroic mirror 13 is arranged at the focal point of this lens surface 16 .
また前記直線に沿う他端のプリズム１５には、該直線に
沿う外方に向けて凸のレンズ面１７と、ダイクロイック
ミラー１３に対し４５度の一外側方に向けて凸のレンズ
面１８とが形成される。一方のレンズ面１７の焦点位置
には光ファイバ１２が配置され、他方のレンズ面１８の
焦点位置には発光ダイオード１０が配置される。Further, the prism 15 at the other end along the straight line has a lens surface 17 that is convex toward the outside along the straight line, and a lens surface 18 that is convex toward the outside at an angle of 45 degrees with respect to the dichroic mirror 13. It is formed. An optical fiber 12 is placed at the focal point of one lens surface 17, and a light emitting diode 10 is placed at the focal point of the other lens surface 18.
次にこの実施例の作用について説明すると、一方の発光
ダイオード１０から照射された光信号はレンズ面１８で
平行光とされ、ダイクロイックミラー１３で反射されて
レンズ面１７に達する。また他方の発光ダイオード１１
から照射された光信号は、レンズ面１６で平行光とされ
、ダイクロイックミラー１３を透過してレンズ面１７に
達する。Next, the operation of this embodiment will be described. An optical signal emitted from one of the light emitting diodes 10 is converted into parallel light by the lens surface 18, reflected by the dichroic mirror 13, and reaches the lens surface 17. Also, the other light emitting diode 11
The optical signal irradiated from the lens is converted into parallel light by the lens surface 16, passes through the dichroic mirror 13, and reaches the lens surface 17.
したがって両発光ダイオード１ｏ、ｉｉかも照射された
波長の異なる２つの光信号はプリズム１５において混合
され、レンズ面１７から光ファイバ１２に入射される。Therefore, the two optical signals of different wavelengths emitted from both the light emitting diodes 1o and ii are mixed in the prism 15, and are incident on the optical fiber 12 from the lens surface 17.
第３図は本発明の第２実施例を示すもので、両プリズム
１４．１５間にもう１つのプリズム１９が貼着され、プ
リズム１５．１９間の接合面にダイクロイックミラー１
３が形成され、プリズム１９゜１４間の接合面に前記ダ
イクロイックミラー１３と平行であり、しかも発光ダイ
オード１１からの光信号の透過を許容するダイクロイッ
クミラー２０が形成される。さらに、中央部のプリズム
１９には、ダイクロイックミラー２０に対して７１５度
の一外側方に向けて凸のレンズ面２１が形成されており
、レンズ面２１の焦点位置には、ダイクロイックミラー
２０で反射される波長の光信号を照射する発光部として
の発光ダイオード２２が配置される。FIG. 3 shows a second embodiment of the present invention, in which another prism 19 is stuck between both prisms 14 and 15, and a dichroic mirror 1 is attached to the joint surface between the prisms 15 and 19.
3 is formed, and a dichroic mirror 20 that is parallel to the dichroic mirror 13 and allows transmission of the optical signal from the light emitting diode 11 is formed on the joint surface between the prisms 19 and 14. Further, the central prism 19 has a convex lens surface 21 facing outward at an angle of 715 degrees with respect to the dichroic mirror 20 , and the focal position of the lens surface 21 has a surface that is reflected by the dichroic mirror 20 . A light emitting diode 22 is disposed as a light emitting unit that emits an optical signal having a wavelength.
この実施例によれば、３つの異なる波長の光信号を混合
することができる。According to this embodiment, optical signals of three different wavelengths can be mixed.
本発明の他の実施例として、前述の各発光グイオー４−
’ １０ 、１１ 、２２に代えてホトダイオードなど
を配置し、光ファイバ１２がも複数周波数の光信号を含
む光を照射して、分波器として用いることも可能である
。As another embodiment of the present invention, each of the above-mentioned light emitting lights 4-
It is also possible to arrange photodiodes or the like in place of '10, 11, and 22, and to irradiate the optical fiber 12 with light containing optical signals of a plurality of frequencies, thereby using it as a demultiplexer.
以上のように本発明゛によれば、成る仮想直線に対して
４５度の方向に傾斜した１あるいは相互に平行な複数の
ダイクロイックミラーを、プリズム相互間の接合面に形
成して、複数のプリズムが相互に貼着され、前記直線に
沿う一端および他端の各プリズムには、該直線に沿う外
方に向けて凸のレンズ面がそれぞれ形成され、前記一端
のプリズムを除く各プリズムには、ダイクロイックミラ
ーに対して４５度の一外側方に向けて凸のレンズ面がそ
れぞれ形成され、前記直線に沿う他端のレンズ面の焦点
位置−には、受光部あるいし１発光部が配置され、前記
直線に浴う一端のレンズ面の焦点位置には全グイクロイ
ックミラーを透過し得る波長の光信号の発光部あるいは
受光部が配植され、他の残余のレンズ面の焦点位置には
、対しくチするダイクロイックミラーで反射される波長
の光信号の発光部ある℃・は受光部が配置されるので、
従来のごときコリメートレンズや集合レンズが不要であ
り、したがって部品点数の低減による製造コス］・の低
減を図ることができるとともに、小型簡略化を図ること
ができる。As described above, according to the present invention, one or a plurality of mutually parallel dichroic mirrors inclined at 45 degrees with respect to a virtual straight line are formed on the joint surfaces between the prisms. are attached to each other, each of the prisms at one end and the other end along the straight line is formed with a lens surface that is convex toward the outside along the straight line, and each prism except for the prism at the one end, A convex lens surface is formed outwardly at an angle of 45 degrees with respect to the dichroic mirror, and a light receiving section or one light emitting section is disposed at the focal position of the lens surface at the other end along the straight line, At the focal position of the lens surface at one end facing the straight line, a light emitting part or a light receiving part for an optical signal having a wavelength that can be transmitted through the entire gichroic mirror is arranged, and at the focal position of the other remaining lens surfaces, Since the light receiving part is located at the light emitting part of the optical signal of the wavelength reflected by the opposite dichroic mirror,
There is no need for conventional collimating lenses or collective lenses, and therefore manufacturing costs can be reduced by reducing the number of parts, and the device can be made smaller and simpler.
第１図は従来の構成を示す配置図、第２図は本発明の第
１実施例の構成を示す配置図、第３図は本発明の第２実
施例の構成を示す配置図である。
１０．１１，２２・・・発光部としての発光ダイオード
、１２・・・受光部としての光ファイバ、１３゜２０・
・・ダイクロイックミラー、１４．１５．１９・・・プ
リズム、１６．１７．１８．２１・・・レンズ面特許出
願人 東洋電装株式会社
第１図
第３図FIG. 1 is a layout diagram showing a conventional configuration, FIG. 2 is a layout diagram showing a configuration of a first embodiment of the present invention, and FIG. 3 is a layout diagram showing a configuration of a second embodiment of the present invention. 10.11, 22... Light emitting diode as a light emitting part, 12... Optical fiber as a light receiving part, 13°20.
...Dichroic mirror, 14.15.19...Prism, 16.17.18.21...Lens surface patent applicant Toyodenso Co., Ltd. Figure 1 Figure 3
Claims (1)
は相互に平行な複数のダイクロイックミラーをプリズム
相互間の接合面に形成して、複数のプリズムが相互に貼
着され、前記直線に沿う一端および他端の各プリズムに
は、該直線に沿５外方に向けて凸のレンズ面がそれぞれ
形成され、前記一端のプリズムを除く各プリズムには、
前記ダイクロイックミラーに対して４５度の一外側方に
向け１凸のレンズ面がそれぞれ形成され、前記直線にＧ
５他端のレンズ面の焦点位置には、受光部あるいは発光
部が配置され、前記直線に沿う一端のレンズ面の焦点位
置には全ダイクロイックミラーを透過し得る波長の光信
号の発光部あるいは受光部が配置され、他の残余のレン
ズ面の焦点位置には、対応するダイクロイックミラーで
反射される波長の光信号の発光部あるいは受光部が配置
さｉすることを特徴とする光信号混合、分波器。One or a plurality of mutually parallel dichroic mirrors tilted at 45 degrees with respect to the imaginary straight line are formed on the joint surfaces between the prisms, and the plurality of prisms are bonded to each other, and one end along the straight line is formed. Each of the prisms at the other end is formed with a lens surface that is convex outward along the straight line, and each prism except the prism at the one end has a
A single convex lens surface is formed facing outward at an angle of 45 degrees with respect to the dichroic mirror, and a G
5 A light receiving section or a light emitting section is disposed at the focal position of the lens surface at the other end, and a light emitting section or a light receiving section is arranged at the focal position of the lens surface at one end along the straight line for transmitting an optical signal of a wavelength that can be transmitted through all the dichroic mirrors. The optical signal mixing and splitting method is characterized in that a light emitting part or a light receiving part for an optical signal of a wavelength reflected by a corresponding dichroic mirror is arranged at the focal position of the other remaining lens surface. Wave equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16985283A JPS6060604A (en) | 1983-09-14 | 1983-09-14 | Optical signal multiplexer and demultiplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16985283A JPS6060604A (en) | 1983-09-14 | 1983-09-14 | Optical signal multiplexer and demultiplexer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6060604A true JPS6060604A (en) | 1985-04-08 |
Family
ID=15894127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16985283A Pending JPS6060604A (en) | 1983-09-14 | 1983-09-14 | Optical signal multiplexer and demultiplexer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6060604A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0485109A2 (en) * | 1990-11-05 | 1992-05-13 | AT&T Corp. | Multicomponent optical devices and method of making the same |
| EP0631163A1 (en) * | 1993-05-17 | 1994-12-28 | Siemens Aktiengesellschaft | Bidirectional optical transceiver |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5290957A (en) * | 1976-01-26 | 1977-07-30 | Nippon Telegr & Teleph Corp <Ntt> | Branching filter for optical fibers |
-
1983
- 1983-09-14 JP JP16985283A patent/JPS6060604A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5290957A (en) * | 1976-01-26 | 1977-07-30 | Nippon Telegr & Teleph Corp <Ntt> | Branching filter for optical fibers |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0485109A2 (en) * | 1990-11-05 | 1992-05-13 | AT&T Corp. | Multicomponent optical devices and method of making the same |
| EP0631163A1 (en) * | 1993-05-17 | 1994-12-28 | Siemens Aktiengesellschaft | Bidirectional optical transceiver |
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