Long-Range Surface Plasmon Polaritons Guided by a Thin Metal Stripe

¹State Key Laboratory of Integrated Optoelectronics, Department of Electronic Engineering, Tsinghua University, Beijing 100084 ²Optical Device Research and Development Centre, ROHM, 21 Mizosaki-Cho, Saiin, Ukyo-Ku, Kyoto 615-8585, Japan

Received Date: December 20, 2006

Published Date: May 31, 2007

Abstract

A long-range surface plasmon polariton (LRSPP) waveguide consisting of a
15nm thick gold stripe embedded in a homogeneous polymer BCB is reported. LRSPPs are excited by TM-mode input light successfully using an end-fire method. By scanning the output coupling fibre, the near field of the LRSPP is measured. The propagation loss of as low as 2.34dB/mm is demonstrated.

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