A new duplex optical communication scheme based on quantum well diode

With the advent of the Internet of things (IoT) era, the existing communication methods have been difficult to meet the high-speed needs and various complex scenarios. Especially in occasions with large electromagnetic interference, such as tunnels, oceans and inspection wells, the existing electromagnetic communication is difficult to meet people’s communication needs. Therefore, as a new communication method, optical communication has the advantages of strong anti-interference ability, high speed and high confidentiality. It has gradually entered people’s vision. And the development of the third generation of semiconductors has also achieved great technological breakthroughs in semiconductor lighting materials and devices, which provides us with a new idea. The supplementary scheme applied to the mainstream electromagnetic communication is innovated. We propose a new optical communication method by using quantum well diode (QWD) chip and combining its physical mechanism of coexistence of luminescence and detection. We use two identical chips as transmitter and receiver, which communicate with each other by light and support software definition. This confirms that it can receive signals while transmitting. We interpret and characterize this communication scheme from three aspects: electricity, optics and communication. This communication method will mean the integration of the transmitter and receiver, thus saving half of the channel cost. The experiment innovates from the most basic devices, integrates new physical phenomena and energy band theory, realizes the exploration of a single device for optical communication with integrated transceiver, and gives birth to a new communication idea and means, which is of great significance for the supplement of communication means in the era of the Internet of things.