Splitting of microcavity degenerate modes in rotating photonic crystals - the miniature optical gyroscopes

摘要

A manifestation of the Sagnac effect in a rotating photonic crystal that contains a microcavity with degenerate modes is explored. It is shown that generally rotation can cause the resonance frequency to split into M different frequencies, where M is the order of the stationary-system mode degeneracy. The results are derived using a new rotation-induced eigenvalue theory that holds for any two-dimensional or three-dimensional rotating microcavity with mode degeneracy Comparison with exact numerical simulations of the rotating system is provided. Miniature optical gyroscopes are discussed. (c) 2006 Optical Society of America.