相关实验视频
Updated: Jun 7, 2025

07:45
Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
10.8K
在多个ONT加载载载体级GPON上的O频段QKD链接用于FTTH应用程序
Optics express
|November 14, 2024
概括
量子密钥分发 (QKD) 已成功集成到一个光纤到家 (FTTH) 网络中. 这证明了在现有的宽带基础设施中安全的量子通信可行性.
科学领域:
- 量子信息科学 量子信息科学
- 电信工程 电信工程 电信工程
- 网络安全 网络安全
背景情况:
- 对于宽带接入,Fiber-to-the-Home (FTTH) 网络越来越常见.
- 量子密钥分发 (QKD) 为通信道提供了增强的安全性.
- 将QKD集成到现有接入网络中存在技术挑战.
研究的目的:
- 展示商用O频段QKD系统在运营商级FTTH网络中的实际集成.
- 在现实的千兆位被动光学网络 (GPON) 配置中验证QKD性能.
- 评估在最终用户访问网络中部署量子安全通信的可行性.
主要方法:
- 使用商用O频段的QKD系统.
- 实施了一个测试台,复制了一个运营商级FTTH网络,其分离比例为1:16 GPON.
- 在现实世界电信运营商环境 (COSMOTE) 中部署了9个光网络终端 (ONT).
- 配置了一个下游接入网络架构,其中的发射器位于中央办公室 (CO),接收器位于最终用户的办公室.
主要成果:
- 在FTTH测试台上成功演示了QKD传输.
- 验证了标准FTTH中的集成,分为两个分割阶段.
- 展示了QKD系统与现有的GPON组件和操作部署的兼容性.
结论:
- 将O频段QKD系统集成到FTTH网络是可行的.
- 这证明了在住宅和商业接入网络中部署量子安全通信的可行途径.
- 该研究证实了在电信基础设施中使用QKD增强网络安全的潜力.
相关概念视频
Cable Subjected to a Distributed Load
646
The analysis of suspension bridges is a complex and critical process that involves multiple factors, including the shape and tension of the main cables. The main cables of suspension bridges are subjected to distributed loads, which result in changes in tensile forces and deformation of the cable. These loads must be carefully considered to ensure that the bridge is safe and capable of supporting the weight of different loads.
646
Transmission Line Design Considerations
123
Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
123
Cable Subjected to Concentrated Loads
797
Flexible cables are commonly used in various applications for support and load transmission. Consider a cable fixed at two points and subjected to multiple vertically concentrated loads. Determine the shape of the cable and the tension in each portion of the cable, given the horizontal distances between the loads and supports.
797
Cascaded Op Amps
590
Operational amplifiers (op-amps) are versatile electronic components that can be interconnected in a cascade - one after another in a linear sequence. This cascading is possible due to their infinite input resistance and zero output resistance, allowing them to maintain their input-output relationships even when connected in series.
In a cascaded system, each op-amp is referred to as a stage. The output of one stage drives the input of the subsequent stage. As the input signal passes through...
In a cascaded system, each op-amp is referred to as a stage. The output of one stage drives the input of the subsequent stage. As the input signal passes through...
590
Energy Stored In A Coaxial Cable
1.4K
A coaxial cable consists of a central copper conductor used for transmitting signals, followed by an insulator shield, a metallic braided mesh that prevents signal interference, and a plastic layer that encases the entire assembly.
In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic...
In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic...
1.4K
Maximum Power Flow and Line Loadability
95
The maximum power flow for lossy transmission lines is derived using ABCD parameters in phasor form. These parameters create a matrix relationship between the sending-end and receiving-end voltages and currents, allowing the determination of the receiving-end current. This relationship facilitates calculating the complex power delivered to the receiving end, from which real and reactive power components are derived.
95

