JPS58133059A - Optical transmitting circuit - Google Patents
Optical transmitting circuitInfo
- Publication number
- JPS58133059A JPS58133059A JP57016153A JP1615382A JPS58133059A JP S58133059 A JPS58133059 A JP S58133059A JP 57016153 A JP57016153 A JP 57016153A JP 1615382 A JP1615382 A JP 1615382A JP S58133059 A JPS58133059 A JP S58133059A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- light emitting
- emitting elements
- transmitted
- coupler
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/032—Arrangements for fault recovery using working and protection systems
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、構造を多重化することによって故障による
不通話防止を図る光送信回路に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical transmitter circuit that uses multiplexed structures to prevent missed calls due to failures.
従来この種の装置として２重化にした場合が第１図に示
すものがあった。図において、（１）、（ｌａ）は同一
構造を有する光送信回路であり、（２）、 Ｃ２ｍ）は
駆動回路、ｔａ＋、（８ａ）は発光素子、（４）、（４
ａ）は光ファイバーである。Conventionally, there has been a duplex device of this type as shown in FIG. 1. In the figure, (1) and (la) are optical transmitter circuits having the same structure, (2) and C2m) are drive circuits, ta+ and (8a) are light emitting elements, and (4) and (4) are light transmitting circuits.
a) is an optical fiber.
次に動作について説明する。光送信回路（１）、（１ｍ
）の駆動回路（２）、（２ｍ）は同一人力信号によって
作動し、発光素子（３）、（８ａ）を駆動する。駆動し
た発光素子（３１，（８ａ）の光信号は光ファイバー（
４）、（４ｍ）によって受信側へ伝送される。正常時に
おいては、一方の光送信回路（１）を常用し、他方の光
送信（ロ）路（ｌａ）を予備機とするが、常用の光送信
回路（１）が故障した場合（他の構成要素に比べて、発
光素子の故障率が著しく大きい）は、受信側にて予備機
の光送信回路（１ａ）の出力を受信入力として切替える
ことによって信号伝達を継続する。Next, the operation will be explained. Optical transmitter circuit (1), (1m
) drive circuits (2) and (2m) are operated by the same human power signal and drive the light emitting elements (3) and (8a). The optical signal of the driven light emitting element (31, (8a)) is transmitted through an optical fiber (
4), (4m) is transmitted to the receiving side. Under normal conditions, one optical transmitter circuit (1) is used regularly and the other optical transmitter (LA) is used as a backup device, but if the normally used optical transmitter circuit (1) breaks down (other optical transmitters (The failure rate of the light emitting element is significantly higher than that of the components), signal transmission is continued by switching the output of the optical transmission circuit (1a) of the standby unit as the receiving input on the receiving side.
従来の２重化された光送信回路は以上のように構成され
ているので、予備機は常用機が故障した時にしか使用さ
れず、常用機の使用から予備機の使用へは受信側での切
替が必要で、切替時に瞬断が発生するなどの欠点があっ
た。Conventional redundant optical transmission circuits are configured as described above, so the standby unit is used only when the regular unit breaks down, and switching from using the regular unit to using the standby unit requires a change on the receiving side. It requires switching, and has drawbacks such as instantaneous interruptions during switching.
この発明は上記のような従来のものの欠点を除去するた
めになられたもので、同一人力信号に基づく複数の発光
素子の光信号を結合して送信することにより、使用部品
の常用、予備の区別がなく受信側での切替を必要としな
い多重化された光送信回路を提供することを目的として
いる。This invention was developed to eliminate the drawbacks of the conventional ones as described above, and by combining and transmitting the optical signals of multiple light emitting elements based on the same human input signal, it is possible to keep used parts in regular use and spare parts. It is an object of the present invention to provide a multiplexed optical transmission circuit that is indistinguishable and does not require switching on the receiving side.
以下、この発明の一実施例を２重化の場合に関して説明
する。第２図において、（５）は光送信回路であり、（
６）は駆動回路、（７）、（７ｍ）は光ファイバー、（
８）は結合器、（９）は結合器（８）内のハーフミラ−
１以上より構成される。Hereinafter, one embodiment of the present invention will be described with reference to a duplex case. In FIG. 2, (5) is an optical transmitter circuit, (
6) is a drive circuit, (7), (7m) are optical fibers, (
8) is a coupler, (9) is a half mirror in the coupler (8)
Consists of one or more.
次に実施例の動作について説明する。駆動回路（６）に
よって駆動された発光素子（３）、（８ａ）の光信号は
各々光ファイバー（７）、（７ｓｉ）を伝わり結合器（
８）へ導かれる。これらの光信号は結合器（８）内のハ
ーフ疋う−（９）へ異なる入射角で突入して、一方は透
加し他方は全面反射することによって結合されて、光フ
ァイバー（４）に入射し受信側へ伝送される。Next, the operation of the embodiment will be explained. The optical signals of the light emitting elements (3) and (8a) driven by the drive circuit (6) are transmitted through the optical fibers (7) and (7si), respectively, and are connected to the coupler (
8). These optical signals enter the half-coupler (9) in the coupler (8) at different angles of incidence, are combined by transmitting one and fully reflecting the other, and enter the optical fiber (4). and transmitted to the receiving side.
発光素子＋３１．（８ａ）の光信号が結合されて、電力
は増加するが、受信側では片方の光信号の持つ電力だけ
で十分作動する様に設計されている。Light emitting element +31. When the optical signals in (8a) are combined, the power increases, but the receiving side is designed so that the power of only one of the optical signals is sufficient for operation.
なお、上記実施例では、発光素子（ａ）、（８ａ）から
結合器（８）への光信号の径路に光ファイバー（７）、
（７ａ）を用いたが、第８図に示すように、レンズ（至
）、（１０ａ）反射−（ロ）等による光学系を設置した
ものでもよい。In the above embodiment, an optical fiber (7),
(7a) is used, but as shown in FIG. 8, an optical system using lenses (10a), (10a) reflection (2), etc. may be installed.
また、結合器（８）内のハーフミラ−（９）は、入射角
によって光を透加したり全面反射するものであるが、こ
れと同等の性質を有する物質、例えば偏光プリズム等な
どでもよいことは言うまでもない。Furthermore, although the half mirror (9) in the coupler (8) allows light to pass through or reflect the entire surface depending on the angle of incidence, it may also be made of a material with similar properties, such as a polarizing prism, etc. Needless to say.
以上のように、この発明によれば同一人力信号に基づく
複数の発光素子の光信号を結合して送信するように構成
したので、発光素子の故障時における受信側での切替操
作が不要で情報伝達の瞬断がなく精度の高いものが得ら
れる効果がある。As described above, according to the present invention, since the optical signals of a plurality of light emitting elements based on the same human signal are combined and transmitted, there is no need for a switching operation on the receiving side in the event of a failure of a light emitting element. This has the effect of providing high accuracy without momentary interruptions in transmission.
第１図は従来の光送信回路の構成図、第２図はこの発明
に係る光送信−路の一実施例による構成図、第８図はこ
の発明に係る光送信回路の他の実施例による構成図であ
る。図において、（３）Ｉ（８１）は発光素子、（４）
は光ファイバー、（５）は光送信回路、（６）は駆動回
路、（７） ｅ （７１）は光ファイバー、（８）は結
合器、（９）はハーフミラ−である。
なお、図中、同一符号は同一、又は相当部分を示す・
代理人 葛 野 信 −FIG. 1 is a block diagram of a conventional optical transmission circuit, FIG. 2 is a block diagram of an embodiment of the optical transmission path according to the present invention, and FIG. 8 is a block diagram of another embodiment of the optical transmission circuit according to the present invention. FIG. In the figure, (3) I (81) is a light emitting element, (4)
(5) is an optical fiber, (5) is an optical transmission circuit, (6) is a drive circuit, (7) e (71) is an optical fiber, (8) is a coupler, and (9) is a half mirror. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Agent Shin Kuzuno -
Claims (1)
れら発光素子の光信号を結合して受信側への送信信号と
する結合器とを備えた光送信回路。An optical transmission circuit comprising a plurality of light emitting elements that convert the same power signal into an optical signal, and a coupler that combines the optical signals of these light emitting elements to form a transmission signal to a receiving side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57016153A JPS58133059A (en) | 1982-02-01 | 1982-02-01 | Optical transmitting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57016153A JPS58133059A (en) | 1982-02-01 | 1982-02-01 | Optical transmitting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58133059A true JPS58133059A (en) | 1983-08-08 |
Family
ID=11908554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57016153A Pending JPS58133059A (en) | 1982-02-01 | 1982-02-01 | Optical transmitting circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58133059A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5043369A (en) * | 1988-10-17 | 1991-08-27 | Corning Incorporated | Glass/glass-ceramic-plastic alloy articles |
| US5737632A (en) * | 1989-12-19 | 1998-04-07 | Hitachi, Ltd. | Magnetic disc control apparatus with parallel data transfer between disc control unit and encoder/decoder circuit |
| JP2010154064A (en) * | 2008-12-24 | 2010-07-08 | Nippon Telegr & Teleph Corp <Ntt> | Optical transmission system and optical transmission method |
-
1982
- 1982-02-01 JP JP57016153A patent/JPS58133059A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5043369A (en) * | 1988-10-17 | 1991-08-27 | Corning Incorporated | Glass/glass-ceramic-plastic alloy articles |
| US5737632A (en) * | 1989-12-19 | 1998-04-07 | Hitachi, Ltd. | Magnetic disc control apparatus with parallel data transfer between disc control unit and encoder/decoder circuit |
| JP2010154064A (en) * | 2008-12-24 | 2010-07-08 | Nippon Telegr & Teleph Corp <Ntt> | Optical transmission system and optical transmission method |
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