Ultrasensitive Two-stressing-applying Microfiber-Based Sensor Operating Near the Dispersion Turning Point with Enhanced Fabrication-tolerance

Shengyao Xu, Chuirong Chi, Weijie Chang, Feng Huang

Abstract: We propose and demonstrate a method to enhance the fabrication tolerance of ultrasensitive microfiber sensors operating around dispersion turning point, in which two stressing parts are introducing into the fiber cladding forming two-stressing-applying fiber. In this way, the strict requirements for microfiber diameters can be significantly eased, allowing fabrication reproducibility and large-scale preparation.