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。
We propose a novel gain-assist lossless hybrid plasmonic strip waveguide based on active semi- conductor material as loss compensation. The proposed plasmonic waveguide is composed of strip semiconductor, dielectric materials 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 1550 nm to target potential applications in telecommunications. The results show that this proposed waveguide can support a propagation length of 10 μm under the subwavelength confinement. The corresponding normalized modal area and FOM are 0. 011 and 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 unlim- ited 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.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2015年第1期199-204,共6页
Journal of Optoelectronics·Laser
关键词
表面等离子体
集成光路
光学器件
导波光学
surface plasmon
photonic integrated circuit
optical device
guided waves
