Transmission system based on coupled lasers for chaotic broadcast communication

Abstract

The invention discloses a transmission system based on coupled lasers for chaotic broadcast communication. The transmission system comprises a first laser, a second laser, a first plane mirror, a second plane mirror, a first collimating lens and a second collimating lens, wherein the second laser, the first laser, the first collimating lens and the first plane mirror are sequentially arranged, thesecond laser, the second collimating lens and the second plane mirror are sequentially arranged, the second laser is served as a transmitting end, and the first laser is served as a receiving end. According to the transmission system, the information of the sending end is received by utilizing the receiving laser so as to realize broadcast communication in a chaotic communication field, when boththe lasers of the transmitting end and the receiving end send '0' or '1', the two lasers are synchronous, and otherwise, the two lasers are in an asynchronous state; and the modulation and demodulation processes of the transmitting end and the receiving end of the broadcast transmission system are bits transmitted by the transmitting end decoded by means of the power error between the received information and the local information, so that the purpose of broadcasting information from one laser to another laser is achieved.

Description

technical field [0001] The invention belongs to the field of optical information technology, in particular to a chaotic broadcast communication transmission system based on coupled lasers. Background technique [0002] Chaotic secure communication is a kind of chaotic signal as the carrier, the transmission signal is hidden in the chaotic carrier, or different waveforms are endowed with different information sequences through symbol dynamic analysis, and the chaotic properties or synchronization characteristics are used to demodulate at the receiving end. The transmitted information is used in various fields because of its information confidentiality, and has been extensively studied in the past few years. Chaos is a deterministic quasi-random process. The unpredictability, sensitivity to initial value and easy-to-implement synchronization of chaos make it have broad prospects in secure communication, image encryption and signal detection. By introducing external disturbanc...

AI Technical Summary

Problems solved by technology

However, the single use of radio waves for transmission has low information security, and the transmission objects are wide, which cannot be effectively limited, and the broadcast information is easy to be stolen.

[0004] Therefore, it is necessary to study a new way to realize broadcast communication while solving the information security problems existing in traditional broadcast communication.

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