IEEE Photonics Journal (Jan 2015)

Broadband Thermo-Optic Switching Effect Based on Liquid Crystal Infiltrated Photonic Crystal Fibers

  • Bing Sun,
  • Yijian Huang,
  • Dan Luo,
  • Chao Wang,
  • Jun He,
  • Changrui Liao,
  • Guolu Yin,
  • Jiangtao Zhou,
  • Shen Liu,
  • Jing Zhao,
  • Yiping Wang

DOI
https://doi.org/10.1109/JPHOT.2015.2449732
Journal volume & issue
Vol. 7, no. 4
pp. 1 – 7

Abstract

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We demonstrate a liquid-crystal-filled photonic crystal fiber (PCF) and investigate its temperature response with a unique liquid crystal (LC) clearing point of 58 °C. Opposite temperature responses are observed at the temperature that is lower and higher than the LC's clearing point, respectively. Such a LC-filled PCF could be used to develop a promising optical switch with a broadband operation range of 102.5 nm via a small temperature change of less than 1.5 °C. Moreover, the LC-filled PCF exhibited an ultrahigh temperature sensitivity of 105 nm/°C and could find potential applications in the field of temperature sensors.