Journal
OPTICS EXPRESS
Volume 13, Issue 17, Pages 6645-6650Publisher
OPTICAL SOC AMER
DOI: 10.1364/OPEX.13.006645
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A novel surface plasmon waveguide structure is proposed for highly integrated planar lightwave circuits. By etching a small trench through a metallic thin film on a silica substrate, a guided mode with highly confined light fields is realized. The mode properties of the proposed structure are studied. The necessity of using a polymer upper-cladding is discussed. The coupling between two closely positioned waveguides and a 90 degrees bending are also studied numerically. Sharp bending and high integration can be realized with the present surface plasmon waveguide. The proposed structure is easy to fabricate as compared with some other types of surface plasmon waveguides for high integration. (c) 2005 Optical Society of America.
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