Perhaps the most intriguing result of Planck’s dust-polarization measurements is the observation that the power in the E-mode polarization is twice that in the B mode, as opposed to pre-Planck expectations of roughly equal dust powers in E and B modes. Here we show how the Eand Bmode powers depend on the detailed properties of the fluctuations in the magnetized interstellar medium. These fluctu...

Abstract Tunable mode converter is a key component of channel switching and routing for optical communication system by adopting mode-division multiplexing. Traditional hardly implements high-order conversion dynamic tunability simultaneously. In this study, we design tunable filled with liquid crystal, which can convert fundamental into multiple modes (TE 0 , TE 1 2 ) good performance low intr...

Abstract Ultra-compact transverse magnetic (TM)-pass polarizer based on silicon sapphire (SOS) platform is proposed and analysed. Low power consumption, high linearity speed of transmission are the major advantages SOS in different commercial applications especially mid infrared region.The suggested structure has bimetallic configuration aluminium doped zinc oxide (AZO) zirconium nitride (ZrN) ...

A highly sensitive terahertz (THz) waveguide resonance biochemical sensor is designed and simulated. The consists of a silicon prism, dielectric layer nanoporous gold film. film acts as both THz waveguiding molecular enrichment layer, which can enhance the interaction between mode adsorbed molecules, consequently improving sensor’s sensitivity. When transverse electric (TE) or magnetic (TM) mod...

Te-enriched chalcogenide glass Ge(15)As(25)Se(15)Te(45) (GAST) is synthesized, thermo-optically characterized and used to fabricate a one dimensional photonic crystal cavity mode that is dynamically and reversibly tuned by temperature modulation. The optical cavity mode is designed using GAST and As(2)S(3) glasses after fully determining their temperature dependence of the complex refractive in...

This paper presents a novel approach for tracking feature points in video sequences. In this method, the image intensity is represented by a 3D deformable surface model. Tracking is performed by exploiting a by−product of explicit surface deformation governing equations. The proposed method was compared with the well known KLT tracking algorithm, in terms of tracking accuracy and robustness. Th...

We present a numerical comparison of the so-called ‘linear sampling’ inverse scattering methods developed by Colton and Kirsch, published in this journal, and linearized tomographic inverse scattering algorithms based on either holographic filtered backpropagation principles or a plain matrix inversion scheme. Although we restrict ourselves to two-dimensional obstacle scattering, we investigate...

It is shown that by making straightforward approximations it is possible to simplify the analysis of the measurements of a well-established dual-waveguide interferometer for sensor applications. In particular we derive approximate algebraic formulae for the mode phase shifts that are measured in the interferometric sensor when a layer of the entity to be detected is deposited. Knowledge of the ...