Abstract
The properties of purely bound plasmon–polariton modes guided by a symmetric thin metal film of finite width are described for what is believed to be the first time, and a suitable mode nomenclature for identifying them is proposed. The dispersion characteristics of the modes as a function of film thickness are presented. It has been found that long-range plasmon–polariton modes exist in a symmetric film structure and that one of them may be suitable for optical signal transmission.
© 1999 Optical Society of America
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