Physical layer protection method, system, networking method and network of chaotic optical network

A chaotic optical and physical layer technology, applied in transmission systems, wavelength division multiplexing systems, digital transmission systems, etc., to achieve the effects of reduced interception probability, easy polarization disturbance, and enhanced security

Active Publication Date: 2021-10-01
WUHAN POST & TELECOMM RES INST CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using multiple encryption methods such as software encryption on the time-domain feedback chaotic system can improve its security, but it cannot fundamentally solve the problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Physical layer protection method, system, networking method and network of chaotic optical network
  • Physical layer protection method, system, networking method and network of chaotic optical network
  • Physical layer protection method, system, networking method and network of chaotic optical network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1 of the present invention provides a multi-dimensional physical layer protection method for a chaotic optical network, comprising the following steps:

[0036] After optical chaotic phase modulation is performed at the sending end, digital chaotic encryption is performed to control the speed of polarization change and the amount of each change, and realize two-level hardware encryption at the physical layer of the chaotic optical network;

[0037] The receiving end performs digital chaos decryption first, and then performs optical chaos phase demodulation, and realizes two-level hardware decryption at the physical layer of the chaotic optical network.

[0038] The chaotic system has two kinds of modulation modes, intensity and phase. The power of the phase chaos system is constant, and the tolerance to nonlinearity and dispersion is stronger. Therefore, a better signal-to-noise ratio can be obtained by increasing the input fiber power, so as to obtain better...

Embodiment 2

[0041] see figure 1As shown, Embodiment 2 of the present invention provides a photoelectric feedback multi-dimensional physical layer protection system for implementing the multi-dimensional physical layer protection method in Embodiment 1. The system includes a sending end and a receiving end, and the sending end includes at least one optical chaos A phase modulation ring and a polarization controller with a polarization adding circuit, the polarization adding circuit controls the polarization change speed and the amount of each change of the polarization controller, and the receiving end includes a polarization controller with a depolarization circuit and at least one optical chaotic phase demodulation ring.

[0042] figure 1 It is a photoelectric feedback phase modulation chaotic optical communication structure after adding a polarization controller. figure 2 , 3 It is a schematic diagram of the perturbation curve and depolarization curve of the polarization controller ...

Embodiment 3

[0052] As an optional implementation, on the basis of Example 2, see figure 1 As shown, the transmitting end includes a laser connected in sequence, a first phase modulator for inputting information, an optical chaotic phase modulation ring, a first polarization controller with a polarization circuit, and an EDFA (Erbium-Doped Optical Fiber Amplifier, erbium-doped fiber amplifier), plus a polarization circuit to control the speed of polarization change and the amount of each change of the first polarization controller.

[0053] As a preferred embodiment, the optical chaotic phase modulation loop includes a second phase modulator, a first optical coupler, a first delay line, and a DPSK (Differential Phase Shift Keying, differential phase shift keying) connected in sequence to form a closed loop The modulator, the first photodetector, the first electrical amplifier, the first optical coupler is connected with the first polarization controller with the polarization adding circuit...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a physical layer protection method, system, networking method and network of a chaotic optical network, and relates to the field of physical layer protection of a chaotic optical network. The multi-dimensional physical layer protection method includes the following steps: after the optical chaos phase modulation is performed at the sending end, digital chaos encryption is performed to control the speed of polarization change and the amount of each change, and two-level hardware encryption is realized at the physical layer of the chaotic optical network; The receiving end performs digital chaos decryption first, and then performs optical chaos phase demodulation, and realizes two-level hardware decryption at the physical layer of the chaotic optical network. The invention performs encryption in three dimensions of time, frequency and polarization, the chaotic signal and polarization perturbation obviously enhance the degree of security, controls the speed and amount of each change of polarization, and significantly reduces the probability of interception.

Description

technical field [0001] The invention relates to the field of physical layer protection of chaotic optical networks, in particular to a physical layer protection method, system, networking method and network of chaotic optical networks. Background technique [0002] The technical points of the chaotic optical communication system have three parts: chaotic light generation, chaotic light modulation, and chaotic light reception. There are four main structures for generating chaotic light: direct current modulation, external light injection, external light feedback, and photoelectric feedback. The chaotic light modulation methods include: chaotic modulation (CM), chaotic masking (CMS) and chaotic keying (CSK). The performance of chaotic modulation is better than that of chaotic keying, and the performance of chaotic keying is better than that of chaotic masking. Confidential and efficient chaotic optical communication systems are often limited by device parameters, structures,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/00H04L27/00H04K1/02H04J14/02
CPCH04J14/02H04K1/025H04L9/001H04L27/001
Inventor 周鹏李响肖希李汉兵高永东张继军余少华
Owner WUHAN POST & TELECOMM RES INST CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap