概括
本研究介绍了模式复杂器的优化像素化超结构,提高了芯片上的光通信性能. 新方法减少了制造错误,提高了数据传输效率,降低了插入损失.
科学领域:
- 光子学和光学通信技术
- 纳米技术和元材料
背景情况:
- 在芯片上的光通信需要高容量解决方案,如模式复杂化.
- 低波长的像素化超结构提供了紧模式的多重复合器,但由于制造偏差而受到影响.
- 制造错误会降低光通信系统中模式复杂器的性能.
研究的目的:
- 为模式复合器开发一个像素化的超结构工作周期优化策略.
- 为了减轻制造偏差对设备性能的影响.
- 提高芯片内光通信的容量和效率.
主要方法:
- 提出了一种工作周期优化策略,通过消除低于功绩数字门的像素.
- 减少了形空气孔的数量,在像素化的超结构.
- 采用了轮盘方法来更新像素和随机突变,以避免局部最佳.
主要成果:
- 从20.6%提高到13.9%,实现了工作周期的改善.
- 演示了一种三模复合器 (TE0,TE1,TE2),可以传输72 Gbit/s的QPSK-OFDM信号.
- 与直接二进制搜索相比,减少了1.92.8dB的插入损失,并在1550nm时优化了1.5dB的通信灵敏度.
结论:
- 建议的优化策略有效地减少了制造偏差对模式复杂器的影响.
- 这种方法可以提高性能指标,如插入损失和通信敏感性.
- 这项工作为高容量的芯片上光学通信提供了一条新的技术道路.
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.
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01:22MOSFET: Enhancement Mode
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Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
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01:20MOSFET: Depletion Mode
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Depletion-mode MOSFETs represent a unique subset of MOSFET technology, functioning fundamentally differently from their enhancement-mode counterparts. Unlike enhancement MOSFETs, which require a positive gate-source voltage (Vgs) to turn on, depletion-mode MOSFETs are inherently conductive and "normally on" devices.
The primary characteristic of depletion-mode MOSFETs is their ability to conduct current between the drain and source terminals without gate bias. This inherent conductivity...
The primary characteristic of depletion-mode MOSFETs is their ability to conduct current between the drain and source terminals without gate bias. This inherent conductivity...
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