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Tunability of Photonic Band Gap Notch Filters

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6 Author(s)
Calo, G. ; Dipt. di Elettrotec. ed Elettron., Politec. di Bari, Bari ; DOrazio, A. ; De Sario, M. ; Mescia, L.
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A notch filter based on an index confined photonic band gap waveguide is proposed. The dropping of an electromagnetic wave having a specific wavelength is obtained by opportunely designing a periodically corrugated overlay. The selective filtering properties of the proposed structure are identified by using a computer code based on the bidirectional beam propagation method with the aid of the method of lines. The optimized design of a notch filter, characterized by a full-width half-maximum (FWHM) bandwidth of 2 nm, is given. The tunability is reached by exploiting the electroclinic effect of smectic-A * liquid crystals.

Published in:

Nanotechnology, IEEE Transactions on  (Volume:7 ,  Issue: 3 )

Date of Publication:

May 2008

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