Remarks on “group velocity, negative and
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Alvaro Gómez; Angel Vegas; Miguel A. Solano
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Article
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2004
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John Wiley and Sons
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English
⚖ 53 KB
👁 1 views
## Abstract In the paper of Ojha et al. (Microwave Opt Technol Lett 42 (2004), 82–87), an erroneous definition of the effective refractive index __n__~__eff__~ in a photonic band gap (PBG) structure is used. The effective refractive index __n__~__eff__~ is defined as a function of the group velocit