VISUAL LIGHT TRANSMITTER, VISUAL LIGHT TRANSMISSION SYSTEM AND VISUAL LIGHT TRANSMISSION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a visual light transmitter capable of transmitting a rapidly modulated signal in a visual light band, and to provide a visual light communication system and a visual light communication method.

SOLUTION: A visual light transmitter, a visual light communication system and a visual light communication method make signal light of which input wavelength is the same as a certain input wavelength of input signal light and signal light (visual signal light) of which input wavelength is a half of the wavelength of the certain input wavelength pass through a PPLN waveguide having a non-linear optical effect after modulating an infrared radiation source at a rate of a few Gb/s or higher and extract the visual signal light by a wavelength filter.

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