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http://dx.doi.org/10.3807/KJOP.2006.17.4.371

Tunable Wavelength Filters Based on Long-Range Surface-Plasmon-Polariton waveguides  

Kim, Ki-Cheol (Department of Physics, Hanyang University)
Song, Seok-Ho (Department of Physics, Hanyang University)
Won, Hyong-Sik (Central Research Institute of Samsung Electro-Mechanics Company)
Lee, Gwan-Su (Central Research Institute of Samsung Electro-Mechanics Company)
Publication Information
Korean Journal of Optics and Photonics / v.17, no.4, 2006 , pp. 371-380 More about this Journal
Abstract
We design and fabricate a novel tunable wavelength filter, which utilizes long-range surface plasmon-polaritons excited along nm-thick-metal strips. A gold metal strip, with $\sim$ cm length, 20 nm thickness, and $\sim$ 5$\mu$m width, is embedded in thick thermo-optic Polymer films supported by a silicon wafer. A dielectric Bragg grating structure is Placed on the metal strip, so that transmission signals at telecom wavelength are selected by thermal effect of the thermo-optic polymer. High extinction ratio of 25 dB and total insertion loss of $\sim$25 dB/cm can be measured by single-mode coupling of optical fibers. We also verify that wavelength tuning of the long-range surface plasmon-polariton filters can be achieved by electric current directly applied to the metal-strip waveguides.
Keywords
Surface plasmon; Metal stripe waveguide; Tunable wavelength filter;
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Times Cited By KSCI : 1  (Citation Analysis)
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