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Photoelectronic technology is closely related to electronic technology. Electronics is a science and technology with application as its main purpose. It mainly studies the characteristics and behavior of electronics and the physics of electronic devices. Electronics involves many scientific categories, including physics, chemistry, mathematics, materials science and so on. Photoelectronics refers to the electronics of light wave bands, namely infrared, visible, ultraviolet and soft X-ray (wavelength range 1–10 nm). It is a science that studies photons as information carriers and energy carriers. It mainly studies how photons produce, move and transform. Electronic technology is a technology that studies the motion law of electrons and is applied to electronic devices, circuits and equipment. Photoelectronics technology is a technology that studies the interaction between light and electricity, that is, photons or light waves and electrons. It includes photoelectronics energy technology and photoelectronics information technology. Photoelectronics technology is inseparable from electronic technology. Photoelectronics technology needs energy–light conversion, light source needs driving and control circuit to emit light, and photoelectric signal processing is needed in the information field. At present, a large number of information processing is still based on electronic technology, and the conversion and amplification between electrical information and optical information are still needed in the process of transmitting and receiving. The core of future information technology is optoelectronic technology. The advantages of optoelectronic technology in the field of information technology are embodied in the following three aspects.