A wavelength division multiplexing bidirectional transmission system based on a delayed optical feedback chaotic semiconductor laser

Abstract

The invention discloses a wavelength division multiplexing bidirectional transmission system based on a delayed optical feedback chaotic semiconductor laser. The system comprises a first reflector, afirst semiconductor laser, a first wave separator, a first optical chaotic signal link, a first wavelength division multiplexer, a first optical fiber, a second wavelength division multiplexer and a second optical chaotic signal link which are sequentially connected, wherein the second optical chaotic signal link is connected with the first wave separator, the first optical chaotic signal link andthe second optical chaotic signal link are used for transmitting optical chaotic signals, any one of the first optical chaotic signal link and the second optical chaotic signal link comprises a sending end, and the other one comprises a receiving end; and the first wavelength division multiplexer or the second wavelength division multiplexer is used for coupling an optical chaotic signal or re-dividing the optical chaotic signal into different wavelength chaotic signals. The system solves the problems of information confidentiality and long-distance large-capacity communication in the chaoticcommunication process.

Description

technical field [0001] The invention belongs to the field of optical information technology, and in particular relates to a wavelength division multiplexing bidirectional secure communication system based on delayed optical feedback semiconductor lasers. Background technique [0002] With the continuous development of social economy, traditional modern secure communication technology can no longer meet people's requirements for information security, and the capacity of information transmission based on traditional information security technology can no longer meet people's needs, so information security and information transmission capacity It has become a hot spot of people's attention. Due to the sensitive dependence of the chaotic system on the initial conditions, the chaotic signal has long-term unpredictability and interception ability; at the same time, the chaotic system itself is deterministic, completely determined by the nonlinear system equations, parameters and i...

AI Technical Summary

Problems solved by technology

In the transmission process of the existing technology, there are still defects in information confidentiality and long-distance large-capacity transmission, which cannot effectively guarantee information security and realize large-capacity long-distance transmission.

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