| US 7,583,882 B2 | ||
| Waveguides for ultra-long range surface plasmon-polariton propagation | ||
| Junpeng Guo, Madison, Ala. (US) | ||
| Assigned to University of Alabama in Huntsville, Huntsville, Ala. (US) | ||
| Filed on Sep. 05, 2007, as Appl. No. 11/850,486. | ||
| Claims priority of provisional application 60/865316, filed on Nov. 10, 2006. | ||
| Prior Publication US 2008/0112713 A1, May 15, 2008 | ||
| Int. Cl. G02B 6/10 (2006.01); G02F 1/35 (2006.01) | ||
| U.S. Cl. 385—131 [385/129; 385/130; 385/132; 385/39; 359/332] | 18 Claims |
| 1. A waveguide for propagation of a surface plasmon-polariton wave, comprising:
a first layer composed of a material having a dielectric constant with a negative real part;
a second layer composed of a dielectric material having a dielectric constant; and
a third layer composed of a dielectric material having a dielectric constant that is greater than the dielectric constant
of the second layer, wherein the second layer is between the first layer and the third layer.
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