公开(公告)号：KR100332833B1

公开(公告)日：2002-04-17

申请号：KR1019990014611

申请日：1999-04-23

Applicant: 한국과학기술원

Inventor： 이정주 ,  김상훈 ,  이동춘 ,  권일범

IPC: G01B9/02

CPC classification number: G01B11/161 ,  G01B2290/25 ,  G01D5/266 ,  G01D5/268 ,  G01K5/486 ,  G01K11/32 ,  G01K11/3206

Abstract: 본발명은변형률, 온도등 다양한물리량을측정하고구조물의건전성감시에적용되는외인성패브리-페롯광섬유센서와이를이용한변형률및 온도측정방법에관한것이다. 이러한본 발명에따른투과형외인성패브리-페롯광섬유센서는, 모세석영유리관의양 쪽에각각삽입되어, 그사이에공기간극을형성하면서상기모세석영유리관의끝 부분에각각고정된제1, 제2단일모드광섬유와; 상기모세석영유리관에삽입되지않은상기제1단일모드광섬유의다른한 끝으로광을조사하는레이저기; 및상기레이저기에의해입사되어, 상기제1단일모드광섬유와, 상기제1단일모드광섬유와제2단일모드광섬유사이의공기간극, 및상기제2단일모드광섬유를통과한광들의간섭프린지를검출하는광 검출기를포함하여, 상기모세석영유리관이길이방향으로변형되면, 그변형크기및 변형방향에따라상기공기간극의간극길이가변하면서상기간섭프린지의발생횟수와신호수준변화경향이가변된다.

公开(公告)号：KR1020000067093A

公开(公告)日：2000-11-15

申请号：KR1019990014611

申请日：1999-04-23

Applicant: 한국과학기술원

Inventor： 이정주 ,  김상훈 ,  이동춘 ,  권일범

IPC: G01B9/02

CPC classification number: G01B11/161 ,  G01B2290/25 ,  G01D5/266 ,  G01D5/268 ,  G01K5/486 ,  G01K11/32 ,  G01K11/3206

Abstract: PURPOSE: A permeable extrinsic Fabry-Perot optical fiber sensor and a method for measuring transformation rate and temperature using the same are provided to measure transformation size and distinguish transformation direction. CONSTITUTION: A permeable extrinsic Fabry-Perot optical fiber sensor includes a first single mode optical fiber and a second single mode optical fiber(24,26) respectively inserted into the both ends of a capillary quartz glass pipe(25) for forming air gap and respectively fixed in the end of the capillary quartz glass pipe, a laser irradiating light to the other end of the first single mode optical fiber not inserted into the capillary quartz glass pipe, and an optical detector detecting interferometric fringe of the lights passing through the first single mode optical fiber, the air gap, the second single mode optical fiber, so that if the capillary quartz glass pipe is changed in length direction, the generating frequency and the signal level change tendency are changed with changing the gap length of the air gap according to the transformation size and direction of the capillary quartz glass pipe.

Abstract translation: 目的：提供可渗透的外在法布里 - 珀罗光纤传感器和使用该传感器测量变换速率和温度的方法来测量变换大小并区分变换方向。 构成：可渗透的外部法布里 - 珀罗光纤传感器包括分别插入到用于形成气隙的毛细管石英玻璃管（25）的两端的第一单模光纤和第二单模光纤（24,26），以及 分别固定在毛细管石英玻璃管的末端，激光将光照射到未插入毛细管石英玻璃管的第一单模光纤的另一端，以及光检测器，检测通过第一光纤的光的干涉条纹 单模光纤，气隙，第二单模光纤，使得如果毛细管石英玻璃管在长度方向上改变，则发生频率和信号电平变化趋势随着气隙的间隙长度的改变而改变 根据毛细管石英玻璃管的转换尺寸和方向。