SYSTEM AND METHOD FOR HIGH SPEED COMMUNICATION WITH ENHANCED SECURITY

According to the present invention, a high-speed communication system with improved security, comprises an optical time domain reflectometer (OTDR). The OTDR includes: a first light source for outputting a first optical pulse; a coupler for dividing the first optical pulse into at least two paths, a...

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Bibliographische Detailangaben
Hauptverfasser: YONGJUN JEONG, CHO SEUNG RAE, CHANG HEE LEE, KYE MYEONGGYUN, AHN SEUNG HYEON, HWANG ILPYEONG, YOO SANG HWA
Format: Patent
Sprache:eng ; kor
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Zusammenfassung:According to the present invention, a high-speed communication system with improved security, comprises an optical time domain reflectometer (OTDR). The OTDR includes: a first light source for outputting a first optical pulse; a coupler for dividing the first optical pulse into at least two paths, and transmitting one of the divided first optical pulses to an optical communication line; an optical detector for receiving the remaining of the divided first optical pulse from the coupler, and confirming whether the first optical pulse is applied to the optical communication line; a second light source for applying a second optical pulse having a weaker intensity than that of the first optical pulse to the optical communication line when the first optical pulse is applied to the optical communication line; an optical receiving unit for receiving optical signals of the first and second optical pulses returning by being reflected from the optical communication line, and detecting a physical change of the first and second optical pulses from the received optical signals; and a control unit for analyzing or predicting a signal leakage of the optical communication line in accordance with the physical change of the first and second optical pulses detected by the optical receiving unit. 본 발명에 따른 보안에 향상된 고속통신 시스템은, 광손실 측정기(OTDR, optical time domain reflectometer)를 구비하는 보안이 향상된 고속통신 시스템에 있어서, 광손실 측정기는, 제1광 펄스를 출력하는 제1광원; 제1광 펄스를 적어도 2이상의 경로로 나누며, 나누어진 제1광 펄스 중의 하나를 광통신 선로에 전달하는 커플러; 커플러로부터, 나누어진 제1광 펄스 중의 나머지를 수신하여 광통신 선로에 제1광 펄스가 인가됨을 확인하는 광 검출기; 광통신 선로에 제1광 펄스가 인가되면, 제1광 펄스보다 세기가 약한 제2광 펄스를 광통신 선로에 인가하는 제2광원; 광통신 선로에서 반사되어 돌아오는 제1광 펄스 및 제2광 펄스의 광 신호를 수신하며, 수신되는 광 신호로부터 제1광 펄스 및 제2광 펄스의 물리적인 변화를 감지하는 광 수신부; 및 광 수신부에 의해 감지된 제1광 펄스 및 제2광 펄스의 물리적인 변화에 따라 광통신 선로의 신호 누수를 분석 또는 예측하는 제어부를 포함한다.