KR100211332B1 - Wavelength division circuit with tone frequency function - Google Patents
Wavelength division circuit with tone frequency function Download PDFInfo
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- KR100211332B1 KR100211332B1 KR1019960079710A KR19960079710A KR100211332B1 KR 100211332 B1 KR100211332 B1 KR 100211332B1 KR 1019960079710 A KR1019960079710 A KR 1019960079710A KR 19960079710 A KR19960079710 A KR 19960079710A KR 100211332 B1 KR100211332 B1 KR 100211332B1
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- tone frequency
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- tone
- optical
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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
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07957—Monitoring or measuring wavelength
-
- 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
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2581—Multimode transmission
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
본 발명은 광 파장 분할 다중화(WDM) 시스템에서 망관리를 위한 신호의 감시가 가능하도록한 톤 주파수 기능을 갖는 파장 변환회로에 관한 것이다.The present invention relates to a wavelength conversion circuit having a tone frequency function that enables the monitoring of signals for network management in an optical wavelength division multiplexing (WDM) system.
이것을 위해 본 발명은 광신호수신기(10), 제한증폭시(11)와 클럭 및 데이터 재발생기(12)로 구성된 수신단을 거친 고주파 신호 출력단에 소정주파수(1KHz30KHz)범위의 저주파 신호를 발생하는 톤 주파수 발생기(15)를 연결하고, 레이저 구동부(13) 및 레이저 다이오드(14)로 구성된 송신단에 상기 톤 주파수를 실어서 출력하도록 구성된 것이다.To this end, the present invention provides a predetermined frequency (1KHz) at a high frequency signal output terminal through a receiving terminal composed of an optical signal receiver 10, a limited amplifier 11, and a clock and data regenerator 12. It is configured to connect the tone frequency generator 15 for generating a low frequency signal in the range of 30KHz, and to load the tone frequency to the transmitting end consisting of a laser driver 13 and a laser diode (14).
Description
본 발명은 광전송 장비의 파장 분할 다중화(WDM) 시스템에 관한 것으로 특히망관리를 위한 신호의 감시가 가능하도록 한 톤주파수 기능을 갖는 파장 변환 회로에 관한 것이다.The present invention relates to a wavelength division multiplexing (WDM) system of optical transmission equipment, and more particularly, to a wavelength conversion circuit having a tone frequency function to enable signal monitoring for network management.
종래의 광전송 시스템은 제1도에 도시한 바와같이 옵티칼 라인 시스템(OLS)으로 구성되어져 있다.The conventional optical transmission system is composed of an optical line system (OLS) as shown in FIG.
이는 옵티칼앰프(OA1 OA2)에서 신호를 감시하는 모니터가 있다면 FT-2000 LCT(Large capacity Terminal)(1)에서 부가된 톤 주파수에 맞추어진 주파수에 의해 신호를 검출한 후 FT-2000 LCT(1) 송신부에서 정해진 광파장에 톤주파수를 실어서 OLS종단(2)을 통해 전송해야만 한다.This is an optical amplifier (OA 1 If there is a monitor that monitors the signal in OA 2 ), the FT-2000 LCT (1) detects the signal by the frequency set according to the added tone frequency and then the FT-2000 LCT (1) transmitter decides the light wavelength. Tone frequency must be loaded on the OLS terminal (2).
이와같은 OLS는 FT-2000 LCT(1)에서부터 망의 모든 부분에 까지 고정된 광파장과 톤 주파수를 사용한다.This OLS uses fixed optical wavelengths and tone frequencies from the FT-2000 LCT (1) to all parts of the network.
즉 1549.4에서부터 1560.7까지의 광파장에 5KHz부터 21KHz까지의 톤주파수를 각각 8채널씩 사용한다.1549.4 From 1560.7 Use 8 channels of tone frequency from 5KHz to 21KHz for the light wavelength up to.
이때 톤 모니터는 베이스트랜스미터(Base Transmitter)에 의해 광채널에 중첩된 저주파 음성AM 신호를 검파한다.At this time, the tone monitor detects the low frequency voice AM signal superimposed on the optical channel by a base transmitter.
각각의 가능한 광파장에는 서로 다른 톤 주파수가 사용되며, 모니터는 광신호를 전기 신호로 변환한 후 5KHz에서 30KHz까지의 주파수범위에 존재하는 전기 신호의 파워를 측정하여, 신호의 크기가 정해진 드레쉬 홀드값보다 높은가 또는 낮은가를 판단한다.Different tone frequencies are used for each possible light wavelength, and the monitor converts the optical signal into an electrical signal and then measures the power of the electrical signal in the frequency range from 5KHz to 30KHz, thereby setting the signal sized hold hold. Determine if it is higher or lower than the value.
그러나 이러한 종래기술은 광 파장분할 다중화(WDM)시스템과 연결되는 다수개의 티디엠(TDM)터미널에서 톤 주파수를 실어 주므로써 WDM시스템과 TDM터미널의 파장과 톤 주파수가 일치하지 않으면 호환이 불가능한 문제점이 있고, 또한 OLS는파장 변환 유니트(WCU)를 구비하고 있지 못하므로 자체적으로 톤 주파수를 발생시키지 못하는 문제점이 있었다.However, such a conventional technology carries a tone frequency in a plurality of TDM terminals connected to an optical wavelength division multiplexing (WDM) system, so that if the wavelength and tone frequency of the WDM system and the TDM terminal do not match, there is a problem of incompatibility. In addition, since the OLS does not have a wavelength conversion unit (WCU), there is a problem in that it does not generate a tone frequency itself.
따라서 본 발명은 광 WDM시스템에서 입력신호의 파장에 무관하게 파장분할 다중화가 가능하므로 기존의 TDM시스템과의 파장에 따른 호환성을 갖고, 또한 톤주파수를 광신호에 실어 주므로써 망 구성에 있어 장소에 구애됨이 없이 톤 모니터를 설치하여 감시 및 제어할 수 있는 파장 변환회로를 제공함을 그 목적으로 하는 것이다.Therefore, in the optical WDM system, since the wavelength division multiplexing is possible regardless of the wavelength of the input signal, the present invention has compatibility with the existing TDM system according to the wavelength. It is an object of the present invention to provide a wavelength conversion circuit capable of installing, monitoring and controlling a tone monitor.
이러한 목적을 달성하기 위한 본 발명의 기술적수단은 광신호수신기, 제한증폭기와 클럭 및 데이터 재발생기로 구성된 수신단을 거친 고주파신호출력단에 소정주파수 범위의 저주파 신호를 발생하는 톤 주파수 발생기를 연결하고, 레이저 구동부 및 레이저 다이오드로 구성된 손신단에 상기 톤 주파수를 실어서 출력하도록 구성된 것이다.The technical means of the present invention for achieving this object is to connect a tone frequency generator for generating a low frequency signal of a predetermined frequency range to a high frequency signal output terminal through the receiving end consisting of an optical signal receiver, a limiting amplifier and a clock and data regenerator, and a laser It is configured to load and output the tone frequency to a hand-held end consisting of a driver and a laser diode.
제1도는 종래의 옵티칼 라인 시스템(OLS) 회로 구성도.1 is a schematic diagram of a conventional optical line system (OLS) circuit.
제2도는 본 발명에 의한 파장 변환회로의 블록 구성도.2 is a block diagram of a wavelength conversion circuit according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 광신호수신기 11 : 제한증폭기10: optical signal receiver 11: limiting amplifier
12 : 클럭 및 데이터 재발생기 13 : 레이저구동부12: clock and data regenerator 13: laser driver
14 : 레이저다이오드 15 : 톤 주파수 발생기14 laser diode 15 tone frequency generator
이하, 본 발명을 첨부한 도면에 의거하여 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
제2도는 본 발명에 의한 파장 변환 회로의 블록 구성도를 나타낸 것으로서, 이에 도시한 바와같이 광신호수신기(10), 제한증폭기(11)와 클럭 및 데이터 재발생기(12)로 구성된 수신단을 거친 고주파 신호 출력단에 소정 주파수(1KHz30KHz)범위의 저주파 신호를 발생하는 톤 주파수 발생기(15)를 연결하고, 레이저구동부(13) 및 레이저다이오드(14)로 구성된 송신단에 상기 톤 주파수를 실어서 출력하도록 구성된 것이다.2 is a block diagram of a wavelength conversion circuit according to the present invention, and as shown therein, a high frequency signal passing through a receiving end consisting of an optical signal receiver 10, a limiting amplifier 11, and a clock and data regenerator 12 Preset frequency (1KHz) at signal output It is configured to connect the tone frequency generator 15 for generating a low frequency signal in the range of 30KHz, and load and output the tone frequency to a transmitting end composed of a laser driver 13 and a laser diode 14.
이와같이 구성된 본 발명의 동작 및 작용효과를 설명하면 다음과 같다.Referring to the operation and effect of the present invention configured as described above are as follows.
제2도에 도시한바와 같이 광신호가 입력되면 이를 광신호수신기(10)에서 수신하여 제한증폭기(11)에 보내어 적절한 레벨로 증폭된후 클럭 및 데이터 재발생기(12)에 가해진다.As shown in FIG. 2, when an optical signal is input, the optical signal is received by the optical signal receiver 10, sent to the limiting amplifier 11, amplified to an appropriate level, and applied to the clock and data regenerator 12.
이에 따라 클럭 및 데이터 재 발생기(12)에서는 고주파신호를 출력하여 레이저 구동부(13)에 가해주게 된다.Accordingly, the clock and data regenerator 12 outputs a high frequency signal and applies it to the laser driver 13.
이때 톤 주파수 발생기(15)로부터 1KHz에서 30KHz 주파수범위의 저주파신호(교류전압)가 발생하여 상기 클럭 및 데이터 재 발생기(12)에서 출력 되는 고주파신호에 실려서 송신단인 레이저 구동부(13) 및 레이저 다이오드(14)를 통해 광신호가 출력된다.At this time, a low frequency signal (alternating voltage) in the frequency range of 1 KHz to 30 KHz is generated from the tone frequency generator 15 and is loaded on a high frequency signal output from the clock and data regenerator 12, and a laser driver 13 and a laser diode, An optical signal is output through 14).
이상에서 설명한바와 같이 본 발명은 광파장 분할 다중화 시스템에서 광신호에 톤 주파수를 실어주므로써 망구성에 있어 장소에 구애됨이 없이 톤 모니터를 설치하여 감시 및 제어가 용이한 효과가 있다.As described above, the present invention has an effect of facilitating monitoring and control by installing a tone monitor without regard to the place in the network configuration by loading the tone frequency to the optical signal in the optical wavelength division multiplexing system.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960079710A KR100211332B1 (en) | 1996-12-31 | 1996-12-31 | Wavelength division circuit with tone frequency function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960079710A KR100211332B1 (en) | 1996-12-31 | 1996-12-31 | Wavelength division circuit with tone frequency function |
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| Publication Number | Publication Date |
|---|---|
| KR19980060353A KR19980060353A (en) | 1998-10-07 |
| KR100211332B1 true KR100211332B1 (en) | 1999-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960079710A KR100211332B1 (en) | 1996-12-31 | 1996-12-31 | Wavelength division circuit with tone frequency function |
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| KR (1) | KR100211332B1 (en) |
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1996
- 1996-12-31 KR KR1019960079710A patent/KR100211332B1/en not_active IP Right Cessation
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| KR19980060353A (en) | 1998-10-07 |
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