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Terahertz wave switch based on photonic crystal ring resonators

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Abstract

In this paper, we have presented a compact and integrated terahertz wave switch design based on photonic crystal ring resonators. The photonic crystal structure with square lattice is investigated and applied for design of ring resonators. The switching mechanism of this novel switch is based on the variation of the resonant frequency of the ring resonator inserted between two parallel waveguides. The refractive index of the holes of the structure filled with polyaniline electrorheological fluids are varied by applied external electric field, the result of which is the variation of the ring resonant frequency. The proposed device is analyzed by using finite difference time domain method. Numerical simulation results show that this switch has high extinction ratio, small size, low voltage and advantages of selectivity of coupling THz wave to different output ports.

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Authors and Affiliations

  1. Faculty of Electrical Engineering, K. N. Toosi University of Technology, Tehran, 1431714191, Iran

    A. R. Maleki Javan & N. Granpayeh

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  1. A. R. Maleki Javan
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  2. N. Granpayeh
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Correspondence to A. R. Maleki Javan.

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Maleki Javan, A.R., Granpayeh, N. Terahertz wave switch based on photonic crystal ring resonators. Opt Quant Electron 40, 695–705 (2008). https://doi.org/10.1007/s11082-008-9257-y

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  • DOI: https://doi.org/10.1007/s11082-008-9257-y

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