KR20000032185A - Optical transmitting-receiving module for optical communication - Google Patents

Optical transmitting-receiving module for optical communication Download PDF

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Publication number
KR20000032185A
KR20000032185A KR1019980048583A KR19980048583A KR20000032185A KR 20000032185 A KR20000032185 A KR 20000032185A KR 1019980048583 A KR1019980048583 A KR 1019980048583A KR 19980048583 A KR19980048583 A KR 19980048583A KR 20000032185 A KR20000032185 A KR 20000032185A
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KR
South Korea
Prior art keywords
light
optical
module
laser diode
wavelength
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KR1019980048583A
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Korean (ko)
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백혁재
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김종수
엘지정밀 주식회사
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Priority to KR1019980048583A priority Critical patent/KR20000032185A/en
Publication of KR20000032185A publication Critical patent/KR20000032185A/en

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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
    • H04B10/40—Transceivers
    • H04B10/43—Transceivers using a single component as both light source and receiver, e.g. using a photoemitter as a photoreceiver
    • 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
    • G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
    • G02B6/4236—Fixing or mounting methods of the aligned elements
    • G02B6/4245—Mounting of the opto-electronic elements

Abstract

PURPOSE: An optical transmitting-receiving module for optical communication is provided to reduce the occupied space of the module and power consumption by integrating a transmitting module with receiving module with each having a different movement wavelength, thereby minimizing the apparatus and improving the speed of data transmission. CONSTITUTION: A semiconductor laser diode(31) emits the light of gamma 1 wavelength and a photo diode(32) receives only the light of gamma 2 wavelength different from the emitted wavelength of the semiconductor laser diode(31) in one semiconductor package(30). A resistance(R1) provides the semiconductor laser diode(31) with a voltage and a resistance(R2) detects the output of the photo diode(32).

Description

광통신용 광송수신모듈Optical transmission module for optical communication

본 발명은 광통신의 광송수신모듈에 관한 것으로 특히, 송신모듈과 수신모듈이 일체화된 광송수신모듈에 관한 것이다.The present invention relates to an optical transmission and reception module of optical communication, and more particularly, to an optical transmission and reception module in which a transmission module and a reception module are integrated.

광통신(Optical Communication)은 빛에 의해 정보를 전달하는 통신방식으로, 반도체 레이저다이오드를 광원으로 해서, 광섬유에 의해 광을 전송하고, 포토다이오드로 광을 수광하는 방식으로 이루어진다. 이렇게 광을 발생하고, 수광하는 종래의 광송수신모듈의 블록도를 도1에 나타내었다.Optical communication is a communication method of transferring information by light, and is a method of transmitting light by optical fibers and receiving light by a photodiode using a semiconductor laser diode as a light source. A block diagram of a conventional optical transmitting and receiving module for generating and receiving light in this manner is shown in FIG.

종래의 광송수신모듈은 도1에 도시된 바와 같이 송신모듈(10)과 수신모듈(20)이 따로 분리되어 있다. 따라서 상기 송신모듈(10)과 수신모듈(20)은 각각 하나의 반도체 패키지로 되어 있다.In the conventional optical transmitting and receiving module, as shown in FIG. 1, the transmitting module 10 and the receiving module 20 are separated. Therefore, the transmission module 10 and the reception module 20 are each made of one semiconductor package.

상기 송신모듈(10)에는 빛을 발생하는 발광소자로서, 반도체 레이저다이오드(laserdiode ; 1)가 있고, 상기 수신모듈(20)에는 빛을 수광하는 수광소자로서, 포토다이오드(photodiode ; 2)가 있다. 그리고, 빛의 전송경로가 되는 광섬유로 된 송신선(3)과 수신선(4)이 있고, 상기 두 선(3,4)은 따로 분리되어 있다.The transmitting module 10 includes a semiconductor laser diode (1) as a light emitting device for generating light, and the photodiode (2) as a light receiving device for receiving light in the receiving module (20). . In addition, there are a transmission line 3 and a reception line 4 made of optical fibers, which serve as light transmission paths, and the two lines 3 and 4 are separated.

상기 반도체 레이저다이오드(1)에서 빛을 발생하면 송신선(3)을 통하여 외부시스템으로 송신되고, 외부시스템에서 송신하여 수신선(4)을 통하여 빛이 입력되면 상기 포토다이오드(2)에 의해 수광된다.When the semiconductor laser diode 1 generates light, the light is transmitted to an external system through the transmission line 3, and when light is input through the reception line 4 through an external system, the light is received by the photodiode 2. do.

상기 구성과 같이 송신모듈(10)과 수신모듈(20)은 분리되어 있다. 그러나, 날로 장치의 소형화가 가속화되고 있는 현실에서 종래의 송신모듈과 수신모듈의 분리는 공간을 많이 차지한다는 문제점이 있다. 즉, 공간을 많이 차지하는 것은 소형화를 가로막는 요소이다.As described above, the transmitting module 10 and the receiving module 20 are separated. However, in the reality that the miniaturization of the device is being accelerated, the conventional separation of the transmission module and the reception module takes a lot of space. In other words, occupying a lot of space is an element preventing the miniaturization.

또한, 송신과 수신을 동시에 할 경우에는 고속의 병렬처리기술을 요구한다. 따라서 현재까지의 기술로써는 송신과 수신을 동시에 하는 것이 불가능하고, 동시 송수신에 비해 데이터의 전송속도가 떨어진다는 문제점이 있다.In addition, when transmitting and receiving at the same time, a high speed parallel processing technique is required. Therefore, the current technology is impossible to transmit and receive at the same time, there is a problem that the data transmission rate is lower than the simultaneous transmission and reception.

따라서 본 발명의 목적은 점유공간을 적게 차지하면서, 동시에 송수신이 가능한 광통신용 송수신모듈을 제공하는데 있다.Accordingly, an object of the present invention is to provide a transmission and reception module for optical communication that can simultaneously transmit and receive while occupying less space.

도1은 종래 기술에 따른 광통신용 광송수신모듈.1 is an optical communication module for optical communication according to the prior art.

도2는 본 발명에 따른 광통신용 광송수신모듈.2 is an optical communication module for optical communication according to the present invention.

도3은 본 광통신용 광송수신모듈을 인터페이스에 적용한 예.Figure 3 is an example of applying the optical transmission module for the optical communication interface.

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

31 : 반도체 레이저다이오드 32 : 포토다이오드31 semiconductor laser diode 32 photodiode

상기 목적을 달성하기 위하여 본 발명에 따른 광통신용 광송수신모듈은, 임의의 파장의 빛을 발생하는 발광소자와, 상기 발광소자의 발생파장과는 다른 파장의 빛을 수광하는 수광소자와, 상기 발광소자와 수광소자를 일체화한 것을 특징으로 한다.In order to achieve the above object, an optical communication module for optical communication according to the present invention includes a light emitting device for generating light of an arbitrary wavelength, a light receiving device for receiving light having a wavelength different from that of the light emitting device, and the light emitting device. An element and a light receiving element are integrated.

이하 본 발명의 이해를 돕기 위해 도2, 도3에 나타낸 광송수신모듈의 실시예를 참조하여 상세히 설명한다.Hereinafter, with reference to the embodiment of the optical transmission and reception module shown in Figs. 2 and 3 in order to help the understanding of the present invention will be described in detail.

도2에 도시한 모듈의 구성을 살펴보면, 한 반도체 패키지(30)에 파장이 λ1 인 빛을 발생하는 반도체 레이저다이오드(31)와, 파장이 λ2 인 빛만 수광하는 포토다이오드(32)가 있다. 그리고 상기 반도체 레이저다이오드(31)에 전압을 공급하기 위한 저항(R1)과, 포토다이오드(32)의 출력을 전압으로 검출하기 위한 저항(R2)이 있다.Looking at the configuration of the module shown in Figure 2, a wavelength of one semiconductor package 30 λ 1 The semiconductor laser diode 31 which produces phosphor light and the wavelength λ 2 There is a photodiode 32 that receives only phosphorescent light. There is a resistor R1 for supplying a voltage to the semiconductor laser diode 31 and a resistor R2 for detecting the output of the photodiode 32 as a voltage.

도3은 상기와 같은 구성을 갖는 송수신모듈을 두 시스템의 인터페이스에 적용한 예이다.3 is an example in which a transmission / reception module having the above configuration is applied to an interface of two systems.

구성을 살펴보면, 파장이 λ1 인 빛을 발생하는 제1레이저다이오드(31)와, 파장이 λ2 인 빛만 수광하는 제1포토다이오드(32)로 이루어진 송수신모듈을 가진 A시스템이 있고, 또한 상기 송수신모듈과 동일하게 파장이 λ1 인 빛을 발생하는 제2레이저다이오드(33)와, 파장이 λ2 인 빛만 수광하는 제2포토다이오드(34)로 이루어진 송수신모듈을 가진 B시스템이 있다. 그리고 A시스템과 B시스템간을 연결하는 광케이블이 있다.Looking at the configuration, the wavelength λ 1 The first laser diode 31 for generating phosphorous light and the wavelength λ 2 There is an A system having a transmission / reception module composed of a first photodiode 32 which receives only phosphorescent light, and the wavelength is the same as that of the transmission / reception module. λ 1 The second laser diode 33 for generating phosphorous light and the wavelength λ 2 There is a B system having a transmission / reception module composed of a second photodiode 34 which receives only phosphorescent light. And there is an optical cable connecting system A and system B.

이하 상기 적용예의 동작을 설명한다.The operation of the application example will be described below.

일단 A시스템의 제1레이저다이오드(31)가 파장 λ1 인 빛을 발생(송신)한다. 이렇게 발생된 빛은 광케이블을 통하여 B시스템으로 입력된다.Once the first laser diode 31 of the A system λ 1 Generates (transmits) phosphorescent light. The generated light is input to the B system through the optical cable.

상기에서 레이저다이오드(31)와 포토다이오드(32)의 동작파장을 달리했는데 이렇게 하지 않고 동작파장을 같도록 설계해버리면, 상기 제1레이저다이오드(31)가 빛을 발생할 때, 동일 패키지안의 제1포토다이오드(32)가 수광(수신)하여 오류가 발생한다. 따라서 반드시 레이저다이오드(31)와 포토다이오드(32)의 동작파장을 다르게 설계해야 한다.When the operating wavelengths of the laser diode 31 and the photodiode 32 are different from each other, but the operating wavelengths are designed to be the same without doing this, when the first laser diode 31 generates light, the first laser diode 31 is generated in the same package. The photodiode 32 receives (receives) an error occurs. Therefore, the operating wavelengths of the laser diode 31 and the photodiode 32 must be designed differently.

상기에서 광케이블을 통해 빛이 B시스템으로 입력되면, 이 빛을 제2포토다이오드(34)가 수광하여 적당한 전압을 출력한다.When light is input to the B system through the optical cable, the second photodiode 34 receives the light and outputs an appropriate voltage.

반대로 B시스템의 제2레이저다이오드(33)에서 빛을 발생하면 광케이블을 통하여 A시스템의 제1포토다이오드(31)가 상기 빛을 수광한다. 상기에서 제2레이저다이오드(33)와 제2포토다이오드(34)의 동작파장이 다르기 때문에, 발광한 빛을 제2포토다이오드(34)가 수광하는 것과 같은 오류는 발생하지 않는다.On the contrary, when light is emitted from the second laser diode 33 of the B system, the first photodiode 31 of the A system receives the light through the optical cable. Since the operating wavelengths of the second laser diode 33 and the second photodiode 34 are different from each other, an error such as that the second photodiode 34 receives the emitted light does not occur.

상기와 같이 본 발명에 따른 광통신용 광송수신모듈은 동작파장을 달리하여 송신모듈과 수신모듈을 일체화시키므로써 분리시보다 모듈의 점유(占有)공간을 줄일 수 있다. 그리고 분리형보다 전력소모를 줄일 수 있다. 또한, 송수신파장이 다르기 때문에 한 선으로 동시 송수신이 가능하여 데이터전송속도도 높일 수 있고, 송신선과 수신선이 분리되어 있을 때보다 광케이블에 더 많은 회선을 넣을 수 있다.As described above, the optical transmission / reception module for optical communication according to the present invention can reduce the occupied space of the module than when separated by integrating the transmission module and the reception module with different operating wavelengths. And it can reduce power consumption than separate type. In addition, since the transmission and reception wavelengths are different, simultaneous transmission and reception by one line can be performed, and the data transmission speed can be increased, and more lines can be put in the optical cable than when the transmission line and the receiving line are separated.

광송수신 일체형모듈을 송신측에 n개, 수신측에 n개씩 설치하여 한 개의 광케이블에 많은 수의 데이터가 동시 입출력이 가능하다. 따라서 향후 최첨단기술로 주목받고 있는 광통신시스템, 광프로세서같은 광전자소자, 광컴퓨터 등에서 신호의 입출력장치에 적용하면 장치의 소형화와 데이터전송속도의 향상에 크게 기여할 것으로 예상된다.It is possible to simultaneously input / output a large number of data on one optical cable by installing n optical modules on the transmitting side and n on the receiving side. Therefore, when applied to signal input / output devices in optical communication systems, optoelectronic devices such as optical processors, optical computers, etc., which are attracting attention as cutting-edge technology in the future, it is expected to greatly contribute to miniaturization of devices and improvement of data transmission speed.

Claims (1)

임의의 파장의 빛을 발생하는 발광소자와,A light emitting device for generating light of an arbitrary wavelength, 상기 발광소자의 발생파장과는 다른 파장의 빛을 수광하는 수광소자와,A light receiving element for receiving light having a wavelength different from that of the light emitting element; 상기 발광소자와 수광소자를 일체화한 것을 특징으로 하는 광통신용 광송수신모듈.Optical communication module for optical communication, characterized in that the light emitting element and the light receiving element are integrated.
KR1019980048583A 1998-11-13 1998-11-13 Optical transmitting-receiving module for optical communication KR20000032185A (en)

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KR1019980048583A KR20000032185A (en) 1998-11-13 1998-11-13 Optical transmitting-receiving module for optical communication

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100398045B1 (en) * 2001-08-07 2003-09-19 한국전자통신연구원 Module for transmitting and receiving an optic signal
KR100425519B1 (en) * 2001-01-16 2004-03-30 라이프앤드엘이디 주식회사 Underwater optical communication apparatus for divers in a short distance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100425519B1 (en) * 2001-01-16 2004-03-30 라이프앤드엘이디 주식회사 Underwater optical communication apparatus for divers in a short distance
KR100398045B1 (en) * 2001-08-07 2003-09-19 한국전자통신연구원 Module for transmitting and receiving an optic signal

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