Experimental research on the effect of Young's modulus on optical fiber microbend strain sensor

Ruichen Tao; Min Li

doi:10.1117/12.871631

9 November 2010 Experimental research on the effect of Young's modulus on optical fiber microbend strain sensor

Ruichen Tao, Min Li

Proceedings Volume 7853, Advanced Sensor Systems and Applications IV; 78533N (2010) https://doi.org/10.1117/12.871631
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

By investigation of the theoretical model of fiber microbend sensor, and derivative of the basic function of microbend with respect to applied external force F then Young's modulus E, we get an expression of sensor's output signal as a function of E which shows that the output of the microbend sensor decreases with the Young's modulus of the gripper increasing, and the change is nonlinear. To verify the accuracy of the theoretical derivation, we design and make four optical fiber microbend grippers of different materials, including stainless steel, Polyvinyl Chloride (PVC), polypropylene (PPR) and bamboo, with the same geometric parameters of grippers such as a mechanical period derived for the maximal sensitivity from the well-known microbend interval equation, and carry out the demonstration experiments under the same initial testing conditions. The initial testing condition has been adjusted during the process of manufacturing and installing the fiber microbend gripper. The experimental data based on our design testing systems showed that the outputs of the microbend sensors match our theoretical simulation curves well to the applied external force F. The conclusion might be useful for future reference of microbend strain sensors design.

Citation Download Citation

Ruichen Tao and Min Li "Experimental research on the effect of Young's modulus on optical fiber microbend strain sensor", Proc. SPIE 7853, Advanced Sensor Systems and Applications IV, 78533N (9 November 2010); https://doi.org/10.1117/12.871631

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KEYWORDS

Sensors

Optical fibers

Fiber optics sensors

Error analysis

Teeth

Fiber optics

Manufacturing

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