Theoretical analysis for superprisming effect of photonic crystals composed of magnetic material

S. Y. Yang, C. T. Chang

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Abstract

In this work, we analyze theoretically the frequency-dependent phase index np (ω) of a guided mode in photonic crystals from the photonic band structures. The np (ω) reveals a promising possibility for fabricating a chromatic prism using photonic crystals. We then investigate the superprisming effect of a photonic-crystal prism for both guided continuous-wave TM and TE modes. In addition to dielectric intuition, the effects of magnetic permeability of a magnetic photonic crystal on the photonic band structure, the phase index, and the superprisming effect are examined. It was found that magnetic intuition could enhance the resolution of a photonic-crystal prism for dividing TE modes of various wavelengths, but reduce the resolution for dividing TM modes.

Original languageEnglish
Article number083105
JournalJournal of Applied Physics
Volume100
Issue number8
DOIs
Publication statusPublished - 2006 Nov 7

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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