A Research of Multimode Microbending Optical Fiber Pressure Sensors Based on Different Gasket Structure

Abstract:

Microbending optical fiber pressure sensor is designed with the sensing unit based on multimode fiber in this paper. It consists of the pressure gasket, the microbending regulator and the metal clamp with fine adjustment structure. The measuring range of the sensor could be adjusted by choosing different gasket. When pressure acts on the fixture, a little displacement may occur, and luminous flux of the fiber will be lost after going through microbending part. According to the principle of light field detection, the pressure measurement can be achieved by detecting the loss of light intensity caused by different load. The basic structure of the sensor and its sensing mechanism are well introduced in this paper. In addition, for improving the effectiveness of the Microbending optical fiber pressure sensors, we set up mechanical zero adjustment and the maximal displacement limitation in order to avoid sensor breakdown caused by excess displacement.

• Periodical: Advanced Materials Research (Volume 952)
• Pages: 227-230
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.952.227
• Online since: May 2014
• Authors: Shu Hua Mo*, Dong Yu, Guo Xing Wang, Li Xue Wang
• Keywords: Gasket, Microbending Sensor, Optical Fiber, Pressure

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