Strain-tunable photonic band gap crystals

Sungwon Kim, Venkatraman Gopalan

Research output: Contribution to journalArticlepeer-review

134 Scopus citations


We have designed a two-dimensional strain-tunable photonic band gap crystal by distorting the symmetry of the crystal from a regular hexagonal to a quasihexagonal lattice by means of field driven strain using a piezoelectric material. Calculations predict that the original high symmetry energy bands split up into several strained energy bands depending on the magnitude and direction of the strain. In the proposed structures, we show that 2% (3%) shear strain can be used to tune ∼52% (73%) of the original undistorted absolute band gap of a two-dimensional photonic band gap crystal. These device structures can be used for optical switching and modulation.

Original languageEnglish (US)
Pages (from-to)3015-3017
Number of pages3
JournalApplied Physics Letters
Issue number20
StatePublished - May 14 2001

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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