发明名称 |
FIBER OPTIC TWO MODE INTERFEROMETRIC SENSORS FOR THE DETECTION OF ABNORMAL STATUS AND THE SIGNAL PROCESSING METHOD |
摘要 |
A fiber optic two mode interferometric sensor for detecting an abnormal status and a signal processing method using the same are provided to detect the abnormal status using an optical fiber sensor and an optical fiber sensor system. A fiber optic two mode interferometric sensor for detecting an abnormal status includes a melted connection part, and a signal processor. The melted connection part is aligned to a center of two cores of the optical fibers. The signal processor performs a signal processing operation. Light entered the waveguide from a laser diode enters a detection optical fiber. The signal processor obtains data from a sensor for certain time intervals. The data obtained for certain time intervals are analyzed to set an alarm level and a hazard level. Then, whether the absolute level is smaller than a reference level set by a sure is determined. When the absolute level is smaller than the reference level, it is determined that the optical fiber is cut.
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申请公布号 |
KR100726206(B1) |
申请公布日期 |
2007.06.01 |
申请号 |
KR20060009433 |
申请日期 |
2006.01.31 |
申请人 |
KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE |
发明人 |
KWON, IL BUM;KIM, CHI YEOP;SEO, DAE CHEOL;HWANG, HYO CHANG |
分类号 |
G01B11/16 |
主分类号 |
G01B11/16 |
代理机构 |
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