Wang, YuhanYuhanWangXu, ZhulongZhulongXuWang, YongYongWangHuan, RonghuaRonghuaHuanJiang, HanqingHanqingJiangKUO-CHIH CHUANG2025-09-242025-09-242023https://www.scopus.com/inward/record.uri?eid=2-s2.0-85162114530&doi=10.1016%2Fj.eml.2023.102032&partnerID=40&md5=f3a7062b318a90566c6599ee8316ff7dhttps://scholars.lib.ntu.edu.tw/handle/123456789/732371Optical fiber sensors have been applied on detecting various physical parameters. In this work, inspired by the mechanism of tendril coiling, we designed a spring-like sensor using optical fibers based on macro bending loss. The proposed optical-fiber spring has good elasticity like a mechanical spring and thus can be used to measure large displacement. As a contact-type sensor, the fabricated optical-fiber spring can measure dynamic displacement, whose range is 4 orders of magnitude higher than that of the point-wise fiber Bragg grating displacement sensor. In addition to the point-wise displacement sensing, we further integrated the optical-fiber spring with a Kresling origami to form a force sensor.Bending LossKreslingOptical FibersTendril CoilingDynamicsOptical Fiber FabricationBending LossDisplacement SensingDynamic DisplacementsDynamic ForcesForce SensingKreslingMacro-bending LossPhysical ParametersPoint WiseTendril CoilingFiber Bragg Gratings[SDGs]SDG7journal article10.1016/j.eml.2023.1020322-s2.0-85162114530