2D bending (curvature) recognition based on a combination of a TFBG and an orthogonal TFBG pair

Weijia Bao, Changle Wang, Yiping Wang, Namita Sahoo, Lin Zhang

Research output: Contribution to journalArticle


We demonstrated a highly-efficient 2D bending sensor with great direction recognition based on the integration of a titled fiber Bragg grating (TFBG) and a specially-designed orthogonal TFBG pair. The low-order cladding modes of the sensor present significant responses to fiber bending magnitude and direction, which is the key to bending direction recognition. Meanwhile, the stable fundamental core mode can be used to monitor the system power and eliminate the temperature effect.
Original languageEnglish
Article number072009
JournalApplied Physics Express
Issue number7
Early online date12 Jun 2019
Publication statusPublished - 21 Jun 2019


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