Fourier modal method based quantitative analysis method of optical power flow and energy loss in general multi-block photonic structures with an internal dipole emitter is described. The analytic expressions of modal power flow and loss are derived for accurate and efficient quantitative analysis. It is revealed that a few dominating excited photonic modes substantially govern the internal ener...

There are concerns that radically new fiber designs and network architectures will soon be required in order to keep up with exponential growth of internet traffic in the backbone network in a cost effective manner [1]. Spatial division multiplexing (SDM) schemes employing either multi core fibers (MCFs) or multi-mode fibers (MMFs) have been recently proposed and successfully demonstrated [2,3]...

We report experimental studies of bright-state polaritons of four-wave mixing (FWM) and six-wave mixing (SWM) signals through cascade nonlinear optical parametric amplification processes in an atom-cavity composite system for the first time. Also, the coexisting cavity transmission modes of parametrically amplified FWM and SWM signals are observed. Finally, electromagnetically induced absorptio...

Five nights photoelectric photometric observations through v and y bands confirm the pulsation of classical Am δ Scuti variable 60 Tau. Power spectrum of light curves shows multi-period pulsation behavior of 60 Tau and two pulsation modes f1=13.0364 and f2=11.8521 cycles per day are definitely identified. Classical Am star 60 Tau is a complicated pulsation δ Scuti variable. Considering the puls...

We have studied a model of a random walk in a quenched random environment. In addition to featuring anomalous diffusion and localization, for special regimes of disorder parameters the particle density decomposes into multi-Gaussian structure while its cumulative distribution is normal. We explain the observed fine structure of the density and point out its significance to experiments.

in the present study, vibration of cylindrical laminates with different layers and angles were studied. in order to actuate and polarize in radial direction, a piezoelectric layer was located at outer surface of composite shell. laminates were assumed long enough so that plane strain state analysis in 2d can be used properly. in order to satisfy the boundary conditions, variables in terms of fo...