Estimation of photonic band gap in silicon crystal waveguide through acousto-optic interaction

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• 作者：Gaurav Sharma ; Sushil Kumar ; Surendra Prasad…
• 关键词：Acousto ; optic effect ; Tuned photonic crystals ; Refractive index modulation ; Tuneable band gap
• 刊名：Optical and Quantum Electronics
• 出版年：2015
• 出版时间：August 2015
• 年：2015
• 卷：47
• 期：8
• 页码：3031-3040
• 全文大小：1,157 KB
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• 作者单位：Gaurav Sharma (1)
  Sushil Kumar (1)
  Surendra Prasad (1)
  Vivek Singh (1)
  
  1. Department of Physics, Faculty of Science, Banaras Hindu University, Varanasi, 221005, UP, India
  
• 刊物主题：Optics, Optoelectronics, Plasmonics and Optical Devices; Electrical Engineering; Characterization and Evaluation of Materials; Computer Communication Networks;
• 出版者：Springer US
• ISSN：1572-817X

文摘

The photonic band gap through acousto-optic interaction in a face-centred cubic silicon crystal is theoretically studied. The dispersion relation for acoustic wave is obtained using method of potentials with boundary conditions involving the bulk and surface stress of considered materials. The dispersion relation for optical wave is derived by transfer matrix method and boundary conditions based on electromagnetic theory. Observation shows that the central frequency of photonic band gap in silicon crystal can be chosen in any desired infrared optical frequency range by adjusting the frequency of acoustic wave. Also, the size of these band gaps in chosen optical frequency range can be further tuned through incident angle of light wave. This study may provide an efficient method to obtain tuneable photonic crystal. Keywords Acousto-optic effect Tuned photonic crystals Refractive index modulation Tuneable band gap