Electrical and thermal modulation of silicon photonic bandgap microcavities containing liquid crystals.

  title={Electrical and thermal modulation of silicon photonic bandgap microcavities containing liquid crystals.},
  author={Sharon Weiss and Huimin Ouyang and Jidong Zhang and Philippe M. Fauchet},
  journal={Optics express},
  volume={13 4},
Electrical and thermal modulation of porous silicon microcavities is demonstrated based on a change in the refractive index of liquid crystals infiltrated in the porous silicon matrix. Positive and negative anisotropy liquid crystals are investigated, leading to controllable tuning to both longer and shorter wavelengths. Extinction ratios greater than 10 dB have been demonstrated. Larger attenuation can be achieved by increasing the Q-factor of the microcavities. 
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