The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 2009
Filed:
Aug. 23, 2006
Yong-gi Lee, Daejeon, KR;
Kyeong-mo Youn, Daejeon, KR;
Hyun-ho Jeong, Daegu, KR;
Kyoung-seon Min, Daejeon, KR;
Ho-jin Jeong, Daejeon, KR;
Bong-wan Lee, Daejeon, KR;
Yong-Gi Lee, Daejeon, KR;
Kyeong-Mo Youn, Daejeon, KR;
Hyun-Ho Jeong, Daegu, KR;
Kyoung-Seon Min, Daejeon, KR;
Ho-Jin Jeong, Daejeon, KR;
Bong-Wan Lee, Daejeon, KR;
KT Corporation, Kyeonggi-Do, KR;
Abstract
In order to identify an optical cable for optical communication from a remote place, a Sagnac interferometer including two strands of an optical fiber is formed in the optical cable, and a worker in the remote place applies a disturbance of a popping sound to an optical cable to be identified. The disturbance applied by the worker is detected and regenerated in the form of a sound. The optical cable can be easily identified by comparing the regenerated signal and the disturbed signal in the remote place to thereby prevent an incorrect optical cable from being cut. In addition, the optical cable can be more precisely identified by selecting a different light detecting frequency component in accordance with environment conditions.