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  • Chinese Optics Letters
  • Vol. 22,
  • Issue 2,
  • pp. 021601-
  • (2024)

Flexible one-dimensional photonic crystal films composed of chalcogenide glass and water-soluble polymer for curvature sensing

Xinyu Chen, Zhangcheng Li, Ruolan Zhao, Yu He, Yue He, Zhi Liang, Guangming Tao, and Chong Hou

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Abstract

Curvature sensing plays an important role in structural health monitoring, damage detection, real-time shape control, modification, etc. Developing curvature sensors with large measurement ranges, high sensitivity, and linearity remains a major challenge. In this study, a curvature sensor based on flexible one-dimensional photonic crystal (1D-PC) films was proposed. The flexible 1D-PC films composed of dense chalcogenide glass and water-soluble polymer materials were fabricated by solution processing. The flexible 1D-PC film curvature sensor has a wide measurement range of 33–133 m−1 and a maximum sensitivity of 0.26 nm/m−1. The shift of the transmission peak varies approximately linearly with the curvature in the entire measurement range. This kind of 1D-PC film curvature sensor provides a new idea for curvature sensing and measurement.

© 2024 Chinese Laser Press

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