Abstract

The oscillating guided modes and surface modes in an optical fiber with left-handed material core and right-handed material cladding are discussed. Using the dispersion equations for $TE$, $TM$, $EH$, and $HE$ guided modes, their dispersion curves are plotted under the consideration of material dispersion, which is based on an experimental model. Then the properties of the dispersion curves are discussed. For $TE\left(TM\right)$ oscillating guided modes, their surface modes can connect with each other. However, the $EH$ oscillating guided mode connects with that of the $HE$ surface mode. Further, for the same frequency, the effective refractive index has two different values for oscillating guided modes and three different values for $E_H$surface mode. Double-value properties of guided modes in LHM slab waveguides are already known, but the three-value property of surface modes in LHM waveguides is found and reported here. We also investigate the normalized power fluxes of $TE$ modes. New propagation characteristics for $TE$ oscillating guided modes and surface modes are obtained.

© 2009 Optical Society of America

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