RT Journal Article ID 0e51c5394d8280a8 A1 Denisenko, G.A. A1 Kurushin, A. A. T1 METAL NANOSTRUCTURES FOR IMPROVING THE EFFICIENCY OF FIBER-OPTICAL AMPLIFIERS WITH ERBIUM IONS FOR 1.54 MICRON WAVELENGTH JF Journal of Radio Electronics JO JRE YR 2012 FD 2012-12-11 VO 1 IS 2 OP 0 K1 rare earth ions; silver nanosized tips; luminescence enhancement; fiber-optical amplifier; surface plasmons; numerical modeling of optical systems AB Well-ordered metal structures, i.e. arrays of nanosized tips on silver surface for studies of the luminescence enhancement of absorbed media with rare earth ions, are used. These arrays are prepared by metal evaporation on track membranes. Basic relations determining plasmon oscillation frequencies for tip electron systems, modeled by semi-spheroidal protrusions, are presented. The impact on these frequencies by the dipole-dipole interaction developed in the tips is analyzed. Parameters of silver nanosized tips for enhancing luminescence in media with erbium ions, widely used in fiber-optical amplifiers at the 1.54 micron wavelength, are determined. Experimental samples of nanosized tip structures for spectral luminescent measurements in media with europium ions are obtained and characterized. Frequency characteristics are modeled numerically for typical tip nanosized structures by the finite difference time-domain method (FDTD). The calculations results obtained by means of the SCT Microwave Studio are compared with experimental data PB Begell House LK https://www.dl.begellhouse.com/journals/49791ac230bedeec,31f488906062ad33,0e51c5394d8280a8.html