Affiliation:
1. Shenzhen University
2. T&S Communications Co., Ltd.
Abstract
The pristine fiber has a tensile strength of 5 GPa while it can be reduced to 0.4 MPa after writing FBG by using the UV laser based phase mask technology. Herein, we report four lamellar polyimide (PI)-coated FBG sensors with great increase of the tensile strength. Our results show that the average tensile strength of the lamellar PI-coated FBG sensors is 2.8 times higher than the value of the uncoated FBG sensors. More importantly, compared with the uncoated FBG sensors, the lamellar PI-coated film can effectively protect the uncoated FBG sensors from a fracture at the grating area. In addition, the lamellar PI-coated FBG sensors also possess good force sensing capabilities, which indicate that the lamellar PI-coated FBG sensors can be considered as a candidate for force sensing applications.
Funder
Science and Technology Planning Project of Shenzhen Municipality
National Natural Science Foundation of China
Basic and Applied Basic Research Foundation of Guangdong Province
Science, Technology and Innovation Commission of Shenzhen Municipality
Cited by
2 articles.
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