Journal of Northeastern University Natural Science ›› 2015, Vol. 36 ›› Issue (8): 1080-1083.DOI: 10.12068/j.issn.1005-3026.2015.08.004

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Magnetic Response Property of Magnetic Fluid Photonic Crystal Microcavity

YING Yu1, ZHAO Yong1, 2, LYU Ri-qing1, WU Di1   

  1. 1. School of Information Science & Engineering, Northeastern University, Shenyang 110819, China; 2. State Key Laboratory of Synthetical Automation for Process Industries, Shenyang 110819, China.
  • Received:2013-12-16 Revised:2013-12-16 Online:2015-08-15 Published:2015-08-28
  • Contact: ZHAO Yong
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Abstract: A kind of microcavity using magnetic fluid photonic crystal was presented, and its forming process was explained theoretically. Then the sensing property was studied, and the transmission characteristic was computed. The magnetic response properties of the proposed structure with the thickness of 6μm and 0.94μm were analyzed respectively. It was found that the central wavelength of resonance peak would be blue-shifted about 4.130μm and 0.076μm. The maximum sensitivity was 243nm/mT and 3.8nm/mT respectively. The sensor system exhibited the advantages of easy tuning, simple formation and high sensitivity, which would provide a new idea for optical sensor.

Key words: microcavity, transmission characteristic, magnetic response, resonance peak, sensor

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