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This research applies an efficient two‐dimensional cylindrical finite‐difference–time‐domain (2D‐CFDTD) algorithm implemented on the transverse plane of a guided‐wave structure to analyze a photonic crystal fiber (PCF) structure. An unsplit anisotropic perfectly matched layer (APML) is used for mesh termination along the radial direction of the PCF. The propagation characteristics of the PCF are analyzed, and excellent agreement is observed between the results derived in this research and those available in the literature. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 35: 10–14, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10502

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Magnetic susceptibility measurements have been made on multimicrogram quantities of AmF3, '4'CmF4, "'CmO2, and ' 'CmBa03 samples (nominally the 5f electronic configuration) and on ' 'CmzO&, '"'CmF3, ' BkF"and ' BkOz (nominally the 5f' electronic configuration) in the temperature range 4.2 -300 K and in magnetic fields up to 1650 G. The experimentally determined effective magnetic moments and the Curie-gneiss constants for these compounds are presented. The deviation of the moments for the 5f compounds from those expected from classic theory is discussed in terms of low-lying excited states, chemical composition, crystal-field perturbations, and realistic electronic structure.

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