WAVELENGTH CONVERSION DEVICE

摘要

A wavelength conversion device, which has a non-linear medium including quantum dots, uses a variable wavelength laser as the exciting light source of optical four-wave mixing, and controls, by means of a control device, the variable wavelength laser, an optical system to be used as the optical path of a signal light, and an optical system to be used as the optical path of excitation light according to the wavelength of a wavelength-converting signal light, thereby wavelength-converting a wide-band signal light using optical four-wave mixing.