Tunable defect mode by temperature and electric field in one dimensional liquid-crystal-filled photonic crystal with a defect layer

Abstract

Abstract: Based on the characteristics of liquid crystal index on electric and temperature, electric field and temperature controlled characteristics of defect mode were researched in one dimensional liquid-crystal-filled photonic crystal with a defect layer by means of transfer matrix method. The results showed that, as the temperature T is in the range from 273k to 330k, the wavelength of defect mode shifted to short wavelength and its variation increased with the increase of the angle θ between perpendicular incident light and electric field direction, which is in the range from 0 to π/2, and the maximum controllable value of wavelength is 373?. As the angle θ is in the range from 0 to π/2, the wavelength of defect mode will drift, the quantity of the drift is negative at first, and then positive with rising of external temperature T which is in the range from 273k to 330k and the maximum controllable value of wavelength is 219?. When θ is equal to 0.7505, no matter how to change the external temperature T which is in the range from 273k to 330k, the defect mode wavelength remains stable. The effect of temperature on the defect mode wavelength is weaker than that of the angle θ between perpendicular incident light and electric field direction on it.

Key words: optoelectronics, defect mode, transfer matrix method, tunable photonic crystal, liquid crystal

CLC Number:

O431.2

YIN Xin-xing, XIE Ying-mao. Tunable defect mode by temperature and electric field in one dimensional liquid-crystal-filled photonic crystal with a defect layer[J]. J4, 2013, 30(3): 318-322.

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