用于增强光吸收的纳米结构金属-半导体-金属光电探测器

2012 5th International Conference on Computers and Devices for Communication (CODEC) Pub Date : 2012-12-01 DOI:10.1109/CODEC.2012.6509294

N. Das, F. F. Masouleh, H. Mashayekhi

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引用次数: 6

摘要

纳米结构金属-半导体-金属光电探测器(msm - pd)能够帮助未来的高速通信设备实现高响应带宽特性。采用时域有限差分(FDTD)方法，通过改变探测器的几何参数，计算了纳米光栅辅助msm - pd在设计波长附近的光吸收增强效果。衬底包含孔径和纳米光栅在厚度上进行了优化，以触发非凡的光传输。此外，还论证了耦合条件如何满足在偏振光照射下表面等离子激元的振荡电荷密度演化。仿真结果表明，纳米光栅辅助MSM-PDs的光吸收增强效果是传统MSM-PDs的13.5倍。

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Nano-structured metal-semiconductor-metal photo-detectors for enhanced light absorption

Nano-structured metal-semiconductor-metal photodetectors (MSM-PDs) are enable to assist in future high-speed communication devices achieving high responsivity-bandwidth characteristics. Finite difference time-domain (FDTD) method is used to calculate the light absorption enhancement of nano-grating assisted MSM-PDs near the design wavelength by varying detector's geometrical parameters in comparison with a conventional device. The substrate containing apertures and the nano-gratings are optimized in thickness to trigger extraordinary optical transmission. Besides, it demonstrates how the coupling condition satisfies the oscillating charge densities evolution to the surface plasmon polaritons under illumination of polarized light. The simulation results confirm that the light absorption enhancement of nano-grating assisted MSM-PDs is ~13.5-times better than the conventional MSM-PDs.

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2012 5th International Conference on Computers and Devices for Communication (CODEC)

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