KR100301856B1 - Optical communication system using optical coupler - Google Patents

Optical communication system using optical coupler Download PDF

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KR100301856B1
KR100301856B1 KR1019960004844A KR19960004844A KR100301856B1 KR 100301856 B1 KR100301856 B1 KR 100301856B1 KR 1019960004844 A KR1019960004844 A KR 1019960004844A KR 19960004844 A KR19960004844 A KR 19960004844A KR 100301856 B1 KR100301856 B1 KR 100301856B1
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optical
communication
station
data
optical signal
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KR1019960004844A
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Korean (ko)
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KR970064035A (en
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김광수
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이종수
엘지산전 주식회사
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    • 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
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/801—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water using optical interconnects, e.g. light coupled isolators, circuit board interconnections
    • H04B10/802—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water using optical interconnects, e.g. light coupled isolators, circuit board interconnections for isolation, e.g. using optocouplers
    • 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

Abstract

PURPOSE: An optical communication system using an optical coupler is provided to prevent a trouble of one communication station from being extended to the entire system and to make the remainder station receive data transmitted in one station. CONSTITUTION: Each communication station(27) connected to a port of an optical coupler(21) as one to one type comprises an optical signal transmitting unit(28) for transmitting data to the optical coupler(21) and an optical signal receiving unit(29) for receiving data from the optical coupler(21). The optical coupler(21) comprises an optical signal receiving unit(22) for receiving data transmitted through the optical signal transmitting unit(28) of the communication station(27), a received data reproducing unit(25) reproducing and outputting the received data, and an optical signal transmitting unit(26) for transmitting the reproduced data to the optical signal receiving unit(29) of each communication station(27). Transmission data of an optical signal transmitting unit(23) of each port(24) are received to the optical signal receiving unit(29) of each communication station(27) through an optical cable communication channel.

Description

광 커플러를 이용한 광통신시스템Optical communication system using optical coupler

제1도는 종래기술에 따른 광통신시스템의 구성블록도.1 is a block diagram of an optical communication system according to the prior art.

제2도는 본 발명에 따른 광통신시스템의 구성블록도.2 is a block diagram of an optical communication system according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

21 : 광 커플러 22, 29 : 광신호 수신부21: optical coupler 22, 29: optical signal receiver

23, 28 : 광신호 송신부 24 : 포트23, 28: optical signal transmitter 24: port

25 : 수신데이타 재생부 26 : 송신부25: reception data playback section 26: transmission section

27 : 통신국27: communication station

본 발명은 광통신에 관한 것으로 특히, 다수의 통신국을 광통신으로 링크시켜주는 광 커플러를 이용한 광통신시스템에 관한 것이다.The present invention relates to optical communication, and more particularly, to an optical communication system using an optical coupler for linking a plurality of communication stations to optical communication.

일반적으로 트위스트 페어 통신로를 사용하는 통신방식은 여러개의 통신국이 주통신로에서 분기되어 서로 연결되므로 버스(BUS)방식으로 통신이 가능하다.In general, a communication method using a twisted pair communication path is a bus (BUS) method because several communication stations are branched from the main communication path and connected to each other.

그러나 광케이블을 통신로로 사용하는 광통신방식은 분기가 불가능하여 트위스트 페어로 전송되는 전기적 통신처럼 버스방식이 불가능하고 일대일(1:1)방식만 가능하다.However, the optical communication method using the optical cable as a communication path is impossible to branch, and thus, the bus method is not possible and the one-to-one (1: 1) method is possible, such as electrical communication transmitted in a twisted pair.

그러므로 다수국에 링크하려면 광을 분배해주는 물리적 커플러를 사용하거나 링통신 방식처럼 수신한 후 재생하여 다시 다음 통신국으로 송신시켜 주어야한다.Therefore, in order to link to multiple stations, it is necessary to use a physical coupler that distributes the light or to receive and replay it as a ring communication method and transmit it to the next communication station again.

이하, 첨부된 도면을 참조하여 종래기술에 따른 광통신시스템을 설명하면 다음과 같다.Hereinafter, an optical communication system according to the related art will be described with reference to the accompanying drawings.

제1도는 종래기술에 따른 광통신시스템의 구성블록도로써, N+1개의 통신국으로 이루어진 통신시스템에서 각 국의 구성은 동일하며 일예로 N통신국을 설명하면 N국은 N-1국과의 데이타를 송수신하기 위한 A포트(8)와 N+1국과 데이타를 송수신하기 위한 B포트(9)로 구성된다.FIG. 1 is a block diagram of an optical communication system according to the prior art. In a communication system consisting of N + 1 communication stations, the configuration of each station is the same. A port 8 for transmitting and receiving and a B port 9 for transmitting and receiving data with the N + 1 station.

상기 A포트(8)는 N-1에서 전송되는 데이타를 N국으로 수신하는 제 1 광신호수신부(5)와 N국의 데이타를 N-1국으로 송신하는 제 1 광신호 송신부(4)로 구성되고, 상기 B포트(9)는 N+1국에서 전송되는 데이타를 N국으로 수신하는 제 2 광신호수신부(7)와 N국의 데이타를 N+1국으로 송신하는 제 2 광신호 송신부(6)로 구성된다.The port A 8 is a first optical signal receiver 5 for receiving data transmitted from N-1 to station N and a first optical signal transmitter 4 for transmitting data of station N to station N-1. The port B 9 includes a second optical signal receiver 7 for receiving data transmitted from the N + 1 station to the N station and a second optical signal transmitter for transmitting data of the N station to the N + 1 station. It consists of (6).

이와같이 구성된 종래기술에 따른 광통신시스템은 통신국이 N국인 경우 N-1국에서 전송된 데이타가 통신로를 통해 A포트(5)의 광신호 수신부(5)에 수신되면 이 데이타는 다시 B포트(9)의 광신호 송신부(6)를 통해 통신로를 따라 N+1국으로 전송된다.In the optical communication system according to the related art configured as described above, when the communication station is the N station, when the data transmitted from the N-1 station is received by the optical signal receiving unit 5 of the A port 5 through the communication path, the data is again transmitted to the B port (9). Is transmitted to the N + 1 station along the communication path through the optical signal transmitter 6 of the "

그리고 N+1국에서 전송된 데이타가 통신로를 따라 B포트(9)의 광신호 수신부(7)에 수신되면 이 데이타는 A포트(8)의 광신호 송신부(4)를 통해 통신로를 따라 N-1국으로 전송한다.When data transmitted from the N + 1 station is received by the optical signal receiver 7 of the B port 9 along the communication path, the data is transmitted along the communication path through the optical signal transmitter 4 of the A port 8. Transmit to N-1 station.

이와같이 하나의 국에서 생성된 데이타는 좌우통신로를 통하여 전체 모든 국이 수신하게 된다.In this way, data generated in one station is received by all stations through the left and right communication paths.

상기에서 설명한 바와같이 종래기술에 따른 광통신시스템의 통신방식은 통신국중 하나의 국에서 장애가 발생하면 좌우로 데이타를 전송시켜주지 못하여 그 영향이 시스템 전체에 파급되므로 전계통이 다운된다는 문제점이 발생된다.As described above, the communication method of the optical communication system according to the related art fails to transmit data from side to side when a failure occurs in one of the communication stations, and thus, the effect is spread throughout the system, causing the entire system to go down.

또한 하나의 국에서 전송된 데이타는 각 국에서 재생시켜 전송해야 하므로 지연시간(Delay Time)이 생겨서 동시에 수신하지 못하는 문제점 즉, 하나의 국에서 발생하는 지연시간을 t 라 하고 1국에서 데이타를 생성하여 송신할 경우 2국은 0, 3국은 t, 4국은 2t, n국은 (n-2)t후에야 각각 수신됨으로써 각 국에 수신되는 수신시간이 틀려지는 문제점이 발생된다.In addition, since the data transmitted from one station must be reproduced and transmitted from each station, there is a delay time, which means that it cannot be received at the same time. In this case, the station 2 receives 0, the station 3 is t, the station 4 is 2t, and the station n is received after (n-2) t, which causes a problem that the reception time received by each station is different.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출한 것으로 하나의 통신국의 장애가 전체 시스템에 파급되는 것을 피하고, 아울러 하나의 국에서 전송된 데이타를 나머지 국들이 모두 수신할 수 있도록 하는 광 커플러를 이용한 광통신시스템을 제공하는 데 목적이 있다.The present invention has been made to solve the above problems, avoiding the failure of one communication station to the whole system, and the optical communication using the optical coupler to allow all other stations to receive data transmitted from one station The purpose is to provide a system.

상기 목적을 달성하기 위한 본 발명에 따른 광 커플러를 이용한 광통신시스템의 특징은 다수의 통신국을 광통신으로 링크시켜 주는 통신시스템에 있어서, 상기 한 통신국에서 전송된 데이타를 나머지 다수의 통신국들이 동시에 수신하게 하기 위한 광 커플러를 부가하여 구성됨에 있다.A feature of an optical communication system using an optical coupler according to the present invention for achieving the above object is a communication system for linking a plurality of communication stations to optical communication, so that the remaining multiple communication stations simultaneously receive data transmitted from the one communication station. It is configured by adding an optical coupler for.

이하, 광 커플러를 이용한 광통신시스템을 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, an optical communication system using an optical coupler will be described in detail with reference to the accompanying drawings.

제2도는 본 발명에 따른 광 커플러를 이용한 광통신시스템의 구성블록도로써, 광 커플러(21)는 광신호 송신부(23), 광신호 수신부(22)로 이루어진 다수의 포트(24)와 수신데이타 재생부(25)와 송신부(26)로 구성된다.2 is a block diagram of an optical communication system using an optical coupler according to the present invention, in which the optical coupler 21 includes a plurality of ports 24 and a reception data reproduction composed of an optical signal transmitter 23 and an optical signal receiver 22. The unit 25 and the transmitter 26 are comprised.

그리고 상기 광 커플러(21)의 포트수와 일대일 연결되는 각 통신국은 상기 광 커플러(21)로 데이타를 전송하기 위한 광신호 송신부(28)와 상기 광 커플러(21)로 부터의 데이타를 전송받는 광신호 수신부(29)로 구성된다.Each communication station connected one-to-one with the number of ports of the optical coupler 21 is an optical signal transmitter 28 for transmitting data to the optical coupler 21 and an optical signal receiving data from the optical coupler 21. It consists of a signal receiver 29.

상기 광 커플러(21)의 구성을 더욱 상세하게 설명하면 통신국의 광신호 송신부(28)를 통해 송신된 데이타를 수신하는 광신호 수신부(22)와 상기 수신된 데이타를 재생하여 출력하는 수신데이타 재생부(25)와 상기 재생된 데이타를 각 통신국의 광신호 수신부(29)에 전송하기 위한 광신호 송신부(26)로 구성된다.In more detail, the optical coupler 21 is described in detail. An optical signal receiver 22 for receiving data transmitted through an optical signal transmitter 28 of a communication station, and a reception data reproducing unit for reproducing and outputting the received data. And an optical signal transmitter 26 for transmitting the reproduced data to the optical signal receiver 29 of each communication station.

상기와 같이 구성된 본 발명에 따른 광 커플러를 이용한 광통신시스템의 동작을 설명한다.The operation of the optical communication system using the optical coupler according to the present invention configured as described above will be described.

만약 1국 통신국(27)이 데이타를 생성하여 전송할 경우라면 1 국 통신국(27)의 광신호 송신부(28)는 광케이블 통신로를 거쳐 광 커플러(21)의 포트1의 광신호 수신부(22)로 출력한다.If the station communication station 27 generates and transmits data, the optical signal transmitter 28 of the station communication station 27 passes through the optical cable communication path to the optical signal receiver 22 of the port 1 of the optical coupler 21. Output

상기 포트1의 광신호 수신부(22)에 수신된 데이타는 광 커플러(21)의 내부 수신 데이타경로를 통해 수신 데이타 재생부(25)에 수신된다.The data received by the optical signal receiving section 22 of the port 1 is received by the receiving data reproducing section 25 through the internal receiving data path of the optical coupler 21.

상기 수신 데이타 재생부(25)는 수신된 데이타를 재생하여 송신부(26)로 출력하고 상기 송신부(26)는 재생된 데이타를 광 커플러(21)의 내부 수신 데이타경로를 통해 각 포트(포트 1, 포트 2, 포트 3, ‥‥, 포트 n)의 광신호 송신부(23)에 동시에 전송한다.The reception data reproducing section 25 reproduces the received data and outputs the data to the transmission section 26. The transmission section 26 outputs the reproduced data to each port (port 1, port 1, through the internal reception data path of the optical coupler 21). It simultaneously transmits to the optical signal transmitter 23 of port 2, port 3, ..., port n).

그후 상기 각 포트의 광신호 송신부(23)의 송신 데이타는 광케이블 통신로를 통해 각 통신국(27)의 광신호 수신부(29)에 동시에 수신된다.Thereafter, the transmission data of the optical signal transmitter 23 of each port is simultaneously received by the optical signal receiver 29 of each communication station 27 via the optical cable communication path.

또한 2국 통신국(27)이 데이타를 생성하여 송신할 경우에도 상기 1국 통신국(27)이 데이타를 생성하여 전송한 경우와 같은 경로로 전체 국의 통신국들이 동시에 수신할 수 있다.In addition, even when the station communication station 27 generates and transmits data, communication stations of all stations can simultaneously receive the same path as when the station communication station 27 generates and transmits data.

그러므로 통신국(27) 중 어느 한 국이 데이타를 생성하여 전송하면 상기 데이타는 광 커플러(21)를 거쳐 전 통신국이 동시에 수신가능하게 된다.Therefore, when any one of the communication stations 27 generates and transmits the data, the data can be simultaneously received by all communication stations via the optical coupler 21.

또한 어느 한 통신국이 데이타를 생성하여 전송하면 상기 데이타는 광 커플러(21)를 거쳐 수신되므로 어느 한 통신국이 장애가 발생하더라도 전 통신 시스템에 파급되지 않는다.In addition, when one communication station generates and transmits the data, the data is received through the optical coupler 21, so that even if one communication station fails, it is not spread to all communication systems.

상기에서 설명한 바와같이 본 발명에 따른 광 커플러를 이용한 광통신시스템은 각 통신국의 광신호 송신부와 광신호 수신부를 광 커플러에 각각 연결하여 광 커플러가 광신호를 분배할 수 있도록 한다.As described above, the optical communication system using the optical coupler according to the present invention connects the optical signal transmitter and the optical signal receiver of each communication station to the optical coupler so that the optical coupler can distribute the optical signal.

따라서, 본 발명의 광 커플러를 이용한 광통신시스템은 한 통신국의 장애가 통신시스템 전 계통에 파급되는 것을 방지할 수 있는 이점이 있다.Therefore, the optical communication system using the optical coupler of the present invention has an advantage of preventing the failure of one communication station from spreading to the entire communication system.

또한, 하나의 통신국으로부터 수신된 데이타는 다른 통신국으로 일괄 송신되므로 모든 통신국의 데이타 수신시 지연시간이 발생하지 않는 이점이 있다.In addition, since data received from one communication station is transmitted collectively to another communication station, there is an advantage that a delay time does not occur when receiving data of all communication stations.

Claims (1)

다수의 통신국간의 통신시스템에 있어서, 상기 다수의 통신국 각각에 연결되고 해당 통신국과 광신호 송/수신을 수행하기 위한 통신포트와, 상기 통신포트를 통해 일 통신국으로부터 수신된 광신호를 데이터 형태로 재생하는 수신데이터 재생부와, 상기 수신데이터 재생부에서 재생된 데이터를 광신호로 변환하여 상기 통신포트를 통해 전체 통신국으로 동시에 송신하는 송신부로 이루어진 광 커플러를 포함하여 구성됨을 특징으로 하는 광 커플러를 이용한 광통신 시스템.In a communication system between a plurality of communication stations, a communication port connected to each of the plurality of communication stations and performing optical signal transmission / reception with a corresponding communication station, and reproducing an optical signal received from one communication station through the communication port in data form. And an optical coupler comprising a receiving data reproducing unit and a transmitting unit which converts the data reproduced by the receiving data reproducing unit into an optical signal and simultaneously transmits the data to the entire communication station through the communication port. Optical communication system.
KR1019960004844A 1996-02-27 1996-02-27 Optical communication system using optical coupler KR100301856B1 (en)

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