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

✍ Scribed by Zhanghua Han; Sailing He

• Book ID: 103873283
• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 613 KB
• Volume: 278
• Category: Article
• ISSN: 0030-4018
• DOI: 10.1016/j.optcom.2007.05.058

✦ Synopsis

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.