Communication method and system based on phase rotation in overhead OPGW optical cable

Abstract

The invention discloses a communication method and system based on phase rotation in an overhead OPGW optical cable, and belongs to the technical field of physical layer encryption, and the method comprises the steps that: a first phase modulator located at a transmitting end modulates an optical signal based on an input key signal, obtains an encrypted signal, and transmits the encrypted signal to a receiving end; a second phase modulator located at the receiving end modulates the encrypted signal based on the input key signal to obtain a decrypted signal, and the angle of the first phase modulator is opposite to that of the second phase modulator. The method is high in adjustability, strong in adaptability, low in introduction complexity of an original system, and capable of ensuring information security from a physical layer.

Description

technical field [0001] The invention relates to the technical field of physical layer encryption, in particular to a communication method and system based on phase rotation in an overhead OPGW optical cable. Background technique [0002] In this era of Internet of Everything, the optical communication network is not only widely used in the access network, but also bears the heavy responsibility of the backbone network transmission of the entire communication network. The extremely high utilization rate and carrying capacity make the security of the optical communication network particularly important. Although the deployment measures and security assurance work of optical networks are constantly improving, with the continuous development of attacks by attackers, diversity of eavesdropping and destruction methods, security incidents of optical communication networks are also constantly occurring. [0003] The power transmission system is an important public infrastructure, an...

AI Technical Summary

Problems solved by technology

In the power transmission system, the emergence of ultra-long-distance transmission technology reduces the number of transmission relay stations and improves the stability of power transmission. It mainly uses OPGW overhead optical cables as transmission links. This kind of optical fiber has extremely low loss, but due to its overhead characteristics, are more vulnerable to malicious attacks by attackers

Once the overhead OPGW optical cable is attacked, it will cause great damage to the national economy

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