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Thermo‐tunable defect mode in one dimensional photonic structure based on grooved silicon and liquid crystal
Author(s) -
Tolmachev V. A.,
Perova T. S.,
Astrova E. V.
Publication year - 2008
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.200802004
Subject(s) - materials science , photonic crystal , liquid crystal , silicon , etching (microfabrication) , reflection (computer programming) , anisotropy , optoelectronics , optics , photonics , spectral line , composite material , physics , layer (electronics) , astronomy , computer science , programming language
A composite 1D photonic structure with defect was designed, fabricated by wet anisotropic etching of (110)‐oriented silicon and filled with liquid crystal. The polarized reflection spectra of the second‐order stop band with defect mode have been registered by means of FTIR microscopy. The thermo‐optical effect in the photonic structure due to phase transition in liquid crystal has been demonstrated in the spectral region of 8.5 µm. The relative shift of the defect mode peak was found experimentally to be 2.0% compared to 3.1% as predicted by calculation. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)