Open AccessDeformation-induced bandgap tuning of 2D silicon-based photonic crystals
Author(s) -
Sukky Jun,
YoungSam Cho
Publication year - 2003
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.11.002769
Subject(s) - photonic crystal , band gap , materials science , optics , deformation (meteorology) , silicon , yablonovite , distortion (music) , photonics , optoelectronics , photonic integrated circuit , physics , composite material , amplifier , cmos
We address the issue of tuning the absolute bandgap in 2D silicon-based photonic crystals by mechanical deformation. The moving least-square (MLS) method, recently proposed by the authors for photonic bandgap materials, is employed for the real-space computation of band structures. The uniaxial tension mode is shown to be more effective for bandgap tuning than both pure and simple shear deformations. We verify that bandgap modifications are strongly influenced by the deformation-induced distortion of interfaces between inclusions and matrix. This result ensures the usefulness of real-space technique for the accurate calculation of strained photonic bandgap materials.