OPTICAL ELEMENT WITH PERIODIC STRUCTURE

摘要

An optical element comprising a periodic (101)structure in which refractive index is distributed periodicly and a deforming portion (102)which mechanically deforms by external action, wherein the deforming portion (102)is integrally arranged with the periodic structure (101)along the periodic direction of the periodic structure, and is so constructed as to change the periodicity of the periodic structure (101)by deforming in the periodic direction of the periodic structure. A periodicity of the periodic structure (101)(photonic band structure) in which the refractive index changes periodically can be controlled with a simple configuration.