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相关概念视频

Biasing of Metal-Semiconductor Junctions01:27

Biasing of Metal-Semiconductor Junctions

517
Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
517

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在芯片上的偏振分离器使用厚厚的SOI平台上的总内部反射镜.

Shahwar Dura, Mikko Harjanne, Matteo Cherchi

    Optics express
    |December 19, 2025
    PubMed
    概括

    研究人员在波导中使用紧的全内反射镜 (TIR) 开发了波长独立的极化控制. 这一突破使宽带光子集成电路 (PIC) 和极化分离器具有高灭绝率.

    科学领域:

    • 光子学是指光子学的使用方法.
    • 材料科学 材料科学 材料科学
    • 电气工程 电气工程

    背景情况:

    • 宽带光子集成电路 (PIC) 需要波长独立的极化操纵.
    • 现有的方法往往在广泛的波长范围和制造容忍度方面扎.

    研究的目的:

    • 在波导中使用紧的全内反射 (TIR) 镜来演示波长独立的偏振依赖相位变化.
    • 开发用于PIC的宽带偏振分离器.

    主要方法:

    • 在波导体中集成紧的全内反射镜 (TIR镜).
    • 在波长范围广泛的极化依赖相位移的特征.
    • 制造一个概念验证的偏振分离器.

    主要成果:

    • 实现了波长独立的偏振依赖相位移,耐受制造错误.
    • 演示了一个极化分离器,在TE和TM极化光的80nm带宽上,极化灭绝比为15dB.

    结论:

    • 紧型TIR反光镜为光子学中波长独立的偏振控制提供了一个可行的解决方案.
    • 开发的宽带偏振分离器是集成光子设备 (如隔离器和循环器) 的关键组件.

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