相关实验视频
Updated: Jan 17, 2026

07:45
Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
11.3K
阿拉穆蒂编码200-Gb/s/λ连贯PON下游的演示,由极点编码的截断概率形状的64QAM启用
Optics express
|September 23, 2025
概括
极性编码概率形状的64ary正方形振幅调制 (PTPS-64QAM) 为高速被动光学网络 (PON) 提供了显著的功率预算改进. 这种先进的调制方案在背对背和20公里传输场景中比传统方法提高了性能.
科学领域:
- 光学通信是指光学通信.
- 信息理论 信息理论
- 调制技术 调制技术
背景情况:
- 被动光学网络 (PON) 对于高速数据传输至关重要.
- 极化波动和电力预算限制会影响PON的性能.
- 需要先进的调制格式来满足不断增长的带宽需求.
研究的目的:
- 为了研究一个简化的连贯PON下游使用极性编码的多对一 (MTO) 映射基于截断的概率形状的64ary方格幅度调制 (PTPS-64QAM).
- 为了评估PTPS-64QAM与均分布式调制格式的性能.
- 评估PTPS-64QAM对未来非常高速PON的可行性.
主要方法:
- 实现一个200Gb/s/λ连贯的PON下游系统.
- 使用基于PTPS-64QAM的极点编码MTO映射.
- 使用阿拉穆蒂编码器来减轻极化波动.
- 在光学背靠背 (OBTB) 和20公里传输条件下进行实验验证.
主要成果:
- 在OBTB中,PTPS-64QAM在OBTB中实现了32dB的功率预算 (C类C+),在UD-32QAM和UD-64QAM的性能上分别超过了3dB和5dB.
- 对于20公里的传输,PTPS-64QAM达到29dB的功率预算,比UD-32QAM和UD-64QAM提高2dB和5dB.
- 与均分布的调制格式相比,已经证明了卓越的性能.
结论:
- 在高速PON中,PTPS-64QAM显示了显著的功率预算优势.
- 阿拉穆蒂编码器有效地减轻了极化波动.
- PTPS-64QAM是未来非常高速PON应用的有希望的候选者.
相关概念视频
Energy Stored In A Coaxial Cable
2.0K
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 field inside...
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 field inside...
2.0K
Maximum Power Transfer
828
Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
By substituting the entire circuit with...
828
Cable Subjected to a Distributed Load
1.1K
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.
1.1K
Propagation Speed of Electromagnetic Waves
4.6K
Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
4.6K
The Maximum Power Transfer Theorem
1.1K
Consider a linear AC Thevenin equivalent circuit connected to a load impedance.
The load connected draws the current, and the circuit delivers the power to the load. The alternating current flowing through the load is determined using the rectangular form of voltages, currents, network impedance, and load impedance. The average power delivered to the load is obtained from the product of the square of current and load resistance.
The load connected draws the current, and the circuit delivers the power to the load. The alternating current flowing through the load is determined using the rectangular form of voltages, currents, network impedance, and load impedance. The average power delivered to the load is obtained from the product of the square of current and load resistance.
1.1K
Phasor Arithmetics
761
Phasors and their corresponding sinusoids are interrelated, offering unique insights into the behavior of alternating current (AC) circuits. One way to understand this relationship is through the operations of differentiation and integration in both the time and phasor domains.
When the derivative of a sinusoid is taken in the time domain, it transforms into its corresponding phasor multiplied by j-omega (jω) in the phasor domain, where j is the imaginary unit, and ω is the angular...
When the derivative of a sinusoid is taken in the time domain, it transforms into its corresponding phasor multiplied by j-omega (jω) in the phasor domain, where j is the imaginary unit, and ω is the angular...
761

