概括
本研究介绍了一种新的四模循环模式转换器,用于模式划分多重复合系统. 该设备表现出高性能,低损耗和宽带宽,为减少光通信中链路损坏铺平了道路.
科学领域:
- 光子学和光学工程 光子学和光学工程
- 电信技术 电信技术 电信技术
背景情况:
- 模式划分多重复合 (MDM) 系统面临着差分模式延迟和模式依赖损失的挑战.
- 高效的循环模式转换器对于克服先进光学传输中的这些局限性至关重要.
研究的目的:
- 介绍一款创新的,高性能的四种模式循环模式转换器.
- 证明其适用于实际的MDM传输系统的适用性.
主要方法:
- 使用半反向设计方法来优化三方向合器.
- 进行模拟来评估性能指标,如插入损失和交叉通话.
- 对设备的特性和传输能力进行实验验证.
主要成果:
- 模拟插入损失<0.4dB和交叉声响<-17dB (1500-1600nm). 模拟插入损失<0.4dB和交叉声响<-17dB (1500-1600nm). 模拟插入损失<0.4dB和交叉声响<- 17dB (1500-1600nm). 模拟插入损失<0.4dB和交叉声响<- 17dB (1500-1600nm).
- 在1520-1580 nm带宽上,实验性低损失 (<1.8 dB) 和低交叉声 (<-15 dB).
- 在64 Gbps和110 Gbps的NRZ-OOK和4-PPM信号中展示了清晰的眼睛图.
结论:
- 开发的循环模式转换器提供了卓越的性能,可扩展性和工艺耐受性.
- 设计可以适应更多模式和不同的材料平台.
- 这项技术有望显著减少MDM传输系统中的链路损伤.
相关概念视频
01:20Design Example: Capacitance Multiplier Circuit
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In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
962
01:16Cascaded Op Amps
731
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...
731
01:26Scaling
317
In designing and analyzing filters, resonant circuits, or circuit analysis at large, working with standard element values like 1 ohm, 1 henry, or 1 farad can be convenient before scaling these values to more realistic figures. This approach is widely utilized by not employing realistic element values in numerous examples and problems; it simplifies mastering circuit analysis through convenient component values. The complexity of calculations is thereby reduced, with the understanding that...
317
01:25Transformers with Off-Nominal Turns Ratios
205
In scenarios involving parallel transformers with disparate ratings, developing per-unit models requires accommodating off-nominal turns ratios. This situation arises when the selected base voltages are not proportional to the transformer’s voltage ratings. Consider a transformer where the rated voltages are related by the term a. If the chosen voltage bases satisfy a relationship involving term b, term c is defined as the ratio of these bases. This ratio is then substituted into the...
205
01:23Voltage Doubler Circuit
854
A voltage doubler circuit integrates two main components: a clamping section and a rectifier section. The clamping section consists of a capacitor (C1) and a diode (D1), whereas the rectifier section is equipped with another diode (D2) and capacitor (C2). This circuit produces an output voltage with twice the amplitude of the sinusoidal input voltage.
854
01:30Simplified Synchronous Machine Model
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The Synchronous Machine Model is a fundamental tool in analyzing and ensuring the transient stability of power systems. This model simplifies the representation of a synchronous machine under balanced three-phase positive-sequence conditions, assuming constant excitation and ignoring losses and saturation. The model is pivotal for understanding the behavior of synchronous generators connected to a power grid, particularly during transient events.
In this model, each generator is connected to a...
In this model, each generator is connected to a...
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