One-dimensional tunable surface plasmonic photonic crystal cavity

Shruti .; Venus Dillu; R. Bhattacharyya; R. K. Sinha

doi:10.1117/12.899932

23 August 2011 One-dimensional tunable surface plasmonic photonic crystal cavity

Shruti ., Venus Dillu, R. Bhattacharyya, R. K. Sinha

Proceedings Volume 8173, Photonics 2010: Tenth International Conference on Fiber Optics and Photonics; 81731J (2011) https://doi.org/10.1117/12.899932
Event: International Conference on Fiber Optics and Photonics, 2010, Guwahati, India

Abstract

One-dimensional (1D) surface plasmonic (SP) nanostructured cavity for the sub-wavelength confinement of light is proposed. Since, the significant spatial confinement of the plasmonic structure is needed for the miniaturization of the device, thin silver metal sheet is used to get plasmonic mode of the cavity. 1D plasmonic photonic crystal structure is designed by placing a silver substrate film(εm) below the photonic crystal waveguide of one dimensional array of air holes in Si (ε_d=11.56 or n_d=3.4) slab of finite thickness. TM mode with vertical electric field is investigated and it is observed that the mode remains dominant in the structure. Further, surface plasmonic nano cavity defect mode is studied by changing the cavity length which can be tuned for different wavelengths by changing the geometry of the structure.

Citation Download Citation

Shruti ., Venus Dillu, R. Bhattacharyya, and R. K. Sinha "One-dimensional tunable surface plasmonic photonic crystal cavity", Proc. SPIE 8173, Photonics 2010: Tenth International Conference on Fiber Optics and Photonics, 81731J (23 August 2011); https://doi.org/10.1117/12.899932

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