Fiber-based architectures exhibit remarkable advantages in wearable electronics. Despite the various techniques to achieve strain sensitive fibers, important factors concerning the sensing performance, e.g. fiber arrangement, have been rarely explored. Herein, various fiber sensing patterns with anisotropic and isotropic microstructures were fabricated, and their localized strain distribution and conductive pathway configuration were tailored through fiber alignment. The sensing performance and mechanisms were investigated based on experimental characterization and theoretical modeling. We find out that the fibers arrangement strongly determines their strain sensitive behavior including sensitivity and sensing range. Additionally, by introducing a mechanical-guided step to realize a constant microcrack density in the fiber patterns, strain sensitivity and stability can be further improved. As a proof of concept, we integrated two fiber array sensors into a strain sensing system to simultaneously achieve an ultrahigh sensitivity (gauge factor up to 9540) and a wide sensing range (0.01–110%) as well as fast response.

基于光纤的架构在可穿戴电子产品中显示出显着优势。尽管获得应变敏感光纤的技术多种多样，但与传感性能有关的重要因素（例如光纤排列）却很少被探索。在此，制造了具有各向异性和各向同性微结构的各种光纤感测图案，并通过光纤对准​​来定制它们的局部应变分布和导电路径配置。基于实验表征和理论模型研究了传感性能和机理。我们发现，纤维排列强烈地决定了它们的应变敏感行为，包括敏感度和感测范围。此外，通过引入机械引导步骤以在纤维图案中实现恒定的微裂纹密度，应变敏感性和稳定性可以进一步提高。作为概念验证，我们将两个光纤阵列传感器集成到应变传感系统中，以同时实现超高灵敏度（规格因子高达9540）和宽广的传感范围（0.01–110％）以及快速响应。