TITLE

Broadband high-efficiency surface-plasmon-polariton coupler with silicon-metal interface

AUTHOR(S)
Jie Tian; Shuqing Yu; Wei Yan; Min Qiu
PUB. DATE
July 2009
SOURCE
Applied Physics Letters;7/6/2009, Vol. 95 Issue 1, p013504
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A high efficiency surface plasmonic coupler composed of a tapered silicon strip waveguide and a subwavelength scale metal gap waveguide is experimentally demonstrated. By tuning the parameters of the taper and the metal gap, the theoretical coupling efficiencies can be as high as 88% for a wide wavelength range. A silicon-gold plasmonic coupler is then fabricated, demonstrating 35% coupling efficiency per facet. Our experimental demonstration is a crucial step for hybrid integration of plasmonic components with conventional dielectric components.
ACCESSION #
43158462

 

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