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Device and method for testing laser attack optical isolator and circulator in quantum communication system

A technology of quantum communication and optical isolator, which is applied in the field of optical path and related testing, and can solve problems such as the impact of isolation performance

Active Publication Date: 2020-03-31
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no test plan for the impact of optical isolators and circulators on their isolation performance under high-power laser irradiation

Method used

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  • Device and method for testing laser attack optical isolator and circulator in quantum communication system
  • Device and method for testing laser attack optical isolator and circulator in quantum communication system

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Embodiment Construction

[0044] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention All modifications of the valence form fall within the scope defined by the appended claims of the present application.

[0045] A test setup for laser attacking optical isolators in quantum communication systems, such as figure 1 As shown, including the first test laser, the first optical power meter one, the first optical power meter two, the first optical power meter three, the first 95:5 beam splitter, the optical isolator, and the first 99:1 beam splitter device, the first high-energy laser, the first optical fiber fuse detector, the first test laser is a laser diode, the laser dio...

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Abstract

The invention discloses a device and a method for testing a laser attack optical isolator and a circulator in a quantum communication system. A laser diode is used for simulating signal light, a beamsplitter is used for increasing light lines so as to achieve laser injection and isolation measurement, an optical isolator and a circulator are attacked through a high-energy laser device, and laseremitted by an attacker Eve in a quantum communication system is simulated to damage the optical isolator. According to the invention, the isolation protection effect of the optical isolator and the circulator on the light source end of the quantum secret communication system can be tested.

Description

technical field [0001] The invention relates to a test scheme for laser attacking optical isolators and circulators, in particular to an optical path and a related test method for the test scheme. Background technique [0002] Since the first quantum encryption communication protocol came out in 1984, the field of quantum communication has developed rapidly, both in theory and technology. At present, worldwide, the Intercontinental Quantum Network of the United States, the Quantum Network of the United Kingdom, the Quantum Network of the European Union, the Quantum Network of Tokyo, Japan, and the Quantum Network of Seoul, South Korea have been established and are being extended. Looking at China, the Beijing-Shanghai main line has completed the network acceptance in 2017, the Mozi quantum satellite is already in work, and the Shanghai-Hangzhou main line and the Ningsu main line are under construction. These results show that quantum secure communication is being more and m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/079H04B10/70H04B10/85
CPCH04B10/0795H04B10/07955H04B10/70H04B10/85
Inventor 黄安琪孙源辰吴俊杰罗懿文许容嘉袁夏龙郭瀚泽徐平强晓刚丁江放邓明堂付祥
Owner NAT UNIV OF DEFENSE TECH