Multimode interference effect in plasmonic subwavelength waveguides and an ultra-compact power splitter

作者：Han Zhanghua^*; He Sailing

来源：Optics Communications, 2007, 278(1): 199-203.

DOI：10.1016/j.optcom.2007.05.058

• surface plasmon
• multimode interference
• power splitter

The real part of the effective index is enhanced in a metal-insulator-metal (MIM) surface plasmon waveguide when the thickness of the insulator is quite small and this mechanism can be utilized to achieve some ultra-compact photonic devices. The mode properties of an index-guided multimode plasmonic waveguide of subwavelength size are analyzed and the multimode interference (MMI) effect is investigated. A novel ultra-compact MMI power splitter, with the transverse size less than 1/3 of the free space wavelength, is proposed.

• 出版日期2007-10-1
• 单位浙江大学