Terahertz modulator using photonic crystals |
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| Authors: | Jiusheng Li |
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| Institution: | Centre for THz Research, China Institute of Metrology, Hangzhou 310018, China Electronics and Information Engineering, China Institute of Metrology, Hangzhou 310018, China |
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| Abstract: | In this letter, a novel terahertz wave modulator based on a silicon oxide/polyaniline photonic crystal is proposed. The modulation mechanism of the novel modulator is based on a dynamic shift of the photonic band gap by the applied external electric field. Its performances were investigated with the finite-difference time-domain method. The novel modulator has 3 dB modulation bandwidth of 10 kHz, a size as small as 20 mm and its extinction ratio larger than 30 dB at the frequency of 1 THz. |
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| Keywords: | Modulator Photonic crystal Terahertz Silicon oxide |
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