APPARATUSES AND METHODS FOR GENERATING SIGNALS WITH VARIABLE FREQUENCY

摘要

PURPOSE: A device and a method generating a frequency variable signal are provided to embody paired wavelength light source changing interval between oscillation wavelengths by a strain and beat paired wavelength optical signal, thereby generating signal of frequency corresponding to interval of oscillation wavelengths. CONSTITUTION: A first and a second resonators(110,115) receive an optical signal and have different resonance conditions. A structure(150) is optically connected to the first resonator and is changed by a strain. A first and a second optical fiber grida(160,165) is located in the structure and filters an optical signal of the first and the second wavelength. A photovoltaic device(190) is optically connected to the first resonator and generates a signal of frequency corresponding to interval of the first wave length and the second wave length. The interval of the first wave length and the second wave length are corresponded to deformation degree of the structure.