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 6 μm and 0. 94 μm were analyzed respectively. It was found that the central wavelength of resonance peak would be blue-shifted about 4. 130 μm and 0. 076 μm.The maximum sensitivity was 243 nm / m T and 3. 8 nm / m T respectively. The sensor system exhibited the advantages of easy tuning,simple formation and high sensitivity,which would provide a newidea for optical sensor.
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