A Study on the Performance of Optical Fiber Displacement Sensor for Monitoring High Speed Spindle according to Properties of Optical Fiber

고속주축 모니터링용 광파이버 변위센서의 파이버 특성에 따른 센서 성능 연구

To make high speed spindle system work properly, sensors with outstanding resolution and dynamic characteristics are essential. An optical fiber displacement sensor is based on simple principles. Electrical signal responds to the optical flux change due to the displacement change between a target and a sensor probe. In this paper, the performance of optical fiber displacement sensor has been investigated according to properties of optical fiber Firstly, optical loss has been measured before and after polishing optical fiber endface. Secondly, allowance of optical fiber bending has been tested. thirdly sensitivity and linear range of the sensor has been found out according to the shape of cross section of optical fiber.