SLAB-TYPE PHOTONIC CRYSTAL WAVEGUIDE PROVIDED WITH RESONANCE STUB TUNER

摘要

PROBLEM TO BE SOLVED: To realize an optical modulator having a narrow band or an adjustable narrow pass-band switch by a photonic crystal waveguide device. SOLUTION: Photonic crystal waveguide devices 40, 60, 70 have photonic crystal 42, a waveguide 44 in the photonic crystal 42, which can transmits light with frequency within a band gap of the photonic crystal 42 and a resonance stub 47 connected for controlling the light in the waveguide 44.