| 刘开贤.基于有源介质的增益辅助无损耗混合表面等离子体波导[J].光电子激光,2015,26(1):199~204 |
| 基于有源介质的增益辅助无损耗混合表面等离子体波导 |
| Gain-assist lossless hybrid plasmonic waveguides based on active semiconductor material |
| 投稿时间：2014-10-16 |
| DOI： |
| 中文关键词: 表面等离子体 集成光路 光学器件 导波光学 |
| 英文关键词:surface plasmon photonic integrated circuit optical device guided waves |
| 基金项目: |
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| 摘要点击次数: 1797 |
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| 中文摘要: |
| 设计了一种基于有源介质的增益辅助无损耗条形 混合表面等离子体 波导。利用有限元算法,理论分析了混合表面等离子体波导在通信波段的传输特 性。结果表明,此波导在突破衍射极限的亚波长光场限制下可实现约10μm的 传输长度。在混合表面等离子体波导中引入泵浦增益后,可以实现光信号的无损 耗传输,从而实现在亚波长光场限制下的无限长传输。此类混合表面等离子 体波导兼具结构简单和易于制备等优点,在光 互联、光子集成电路、光通信和光信息处理等方面有重要的潜在应用。 |
| 英文摘要: |
| We propose a novel gain-assist lossless hybrid plasmonic strip waveguide based on active semiconductor material as loss compensation.The proposed plasmonic waveguide is composed of strip semiconductor,dielectric mater ials and a silver membrane.The semiconductor strip is optically or electrically pumped as gain medium to provide gain to compensate the loss of the propagating optical signal in the proposed waveguide.The modal characteristics and guiding properties of the proposed waveguide are theoretically investigated using the finite elements method at the wavelength of 1550nm to target potential applications in telecommunications.The results show that this proposed waveguide can support a propagation length of 10μm under the subwavelength confinement. The corresponding normalized modal area and FOM are 0.011and 82, respectively.With the help of the gain medium made of active semiconductor material,the proposed waveguide supports the lossless propagation of the optical signal to realize unlimited propagation length under the subwavelength confinement.In addition,the sandwich-like structure of the proposed waveguide is very simple,which makes the proposed waveguide easy to be optically or electrically pumped and fabricated.The lossless hybrid plasmonic strip waveguide may have potential applications in optical interconnections,photonic integrated circuits,short-distance on-chip optical communications and optical information processing. |
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