Photonic bandgaps in patterned waveguides of silicon-rich silicon dioxide

Neal, R.T.; Zoorob, M.E.; Charlton, M.D.; Parker, G.J.; Finlayson, C.E.; Baumberg, J.J.
March 2004
Applied Physics Letters;3/29/2004, Vol. 84 Issue 13, p2415
Academic Journal
We describe waveguides of photoluminescent silicon-rich silicon dioxide, which have been patterned by triangular two-dimensional (2D) photonic crystals to give higher-order photonic bandgaps occurring within the luminescence band of the core material. Photonic crystal modification of the photoluminescence spectrum allows identification of angle-tuned photonic bandgaps, in close agreement with 2D plane wave expansion and finite-difference time domain simulations. We discuss the importance of these findings for the development of integrated optical circuitry based on silicon-compatible microelectronics. © 2004 American Institute of Physics.


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