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25 August 2008 Guided modes and light trapping in the negative-refractive-index slab waveguides
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We derive mathematical criteria for a pair of guided modes which have the same parity, mutually parallel wave vectors along the guiding direction of the waveguide, but opposite directions of optical power flow in a negative-index slab waveguide using a graphical method. It is also proven that the so-called light trap mode corresponds to the degenerate mode of this pair. We also propose a waveguide structure in which guided light waves can be trapped via tunneling through thin metamaterial clad layers. This trap is temporary since the trapped light tunnels out completely after a short time.
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Kyoung-Youm Kim, Il-min Lee, Junghyun Park, Minsu Kang, and Byoungho Lee "Guided modes and light trapping in the negative-refractive-index slab waveguides", Proc. SPIE 7056, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications II, 70560M (25 August 2008);


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