DETECTION OF DISPLACEMENT USING GLASS OPTICAL FIBER SENSOR WITH VARIOUS CONFIGURATION

The research has measured the landslide using a displacement sensor based on Glass Optical Fiber (GOF) and Time Domain Reflectometer (OTDR). manufacture process consists of various materials, structures, configurations, diameters, directions. is made GOF with single-mode structure single mode-multimode-Singlemode (SMS) structure. Each system given variety namely gamma, bowknot, three loops configuration. arrangement provided variation indentation diameter in test results will be read as power loss OTDR dB units. obtained were then compared between two Displacement resulting landslides changes to sensor, causing losses, affecting characteristics each sensor. We found best measurement sensitivity value 0.241 dB/mm resolution 0.004 mm. been for measuring laboratory-scale simulation easier fabrication, easy operation, high sensitivity, better can connected computer