  In this letter, we demonstrate the integration of short metal nanoparticle
chains (L \approx 700nm) supporting localized surface plasmons in Silicon On
Insulator (SOI) waveguides at telecom wavelengths. Nanoparticles are deposited
on the waveguide top and excited through the evanescent field of the TE
waveguide modes. Finite difference time domain calculations and waveguide
transmission measurements reveal that almost all the TE mode energy can be
transferred to nanoparticle chains at resonance. It is also shown that the
transmission level is very sensitive to the nanoparticle environment, thus
opening the way towards ultra-compact sensors in guided optics on SOI.

Optics