Effects of Bragg Scattering on Ultra-Wideband Signal Transmission from Periodic Surfaces

Influence of Bragg Scattering on UWB Signal Reflection from a Periodic Surface

A Compact Ultra-Wideband Filter Based on Left Handed Transmission Line by Using Complementary Split Ring Resonators and Series Capacitor

A compact and sharp rejection UWB microstrip bandpass filter is developed using left handed metamaterials. For realizing a backward-wave propagation medium, two split ring resonator (CSRR) in the back substrate side and also one series capacitor etched in the host line, are used to produce a negative effective ε and μ, simultaneously. Moreover, in the proposed structure, two doublets parallel c...

Ultra-High Capacity Optical Transmission Technologies for 100 Tbit/s Optical Transport Networks

This paper describes ultra-high capacity wavelengthdivision multiplexed (WDM) transmission technologies for 100-Tbit/sclass optical transport networks (OTNs). First, we review recent advances in ultra-high capacity transmission technologies focusing on spectrallyefficient multi-level modulation techniques and ultra-wideband optical amplification techniques. Next, we describe an ultra-high capac...

Numerical analysis of scattered waves from rough surfaces with and without an object

The effects of rough surface scattering on the detection and imaging of objects are important in many applications including the imaging of objects on or near ocean surfaces and the detection of objects buried under ground rough surfaces. This paper focuses on the following problems: (1) Scattering from wedge-like rough surfaces representing ocean surfaces with sharp crested waves. (2) Scatteri...

Finite-Difference Time-Domain Simulation of Light Propagation in 2D Periodic and Quasi-Periodic Photonic Structures

Ultra-short pulse is a promising technology for achieving ultra-high data rate transmission which is required to follow the increased demand of data transport over an optical communication system. Therefore, the propagation of such type of pulses and the effects that it may suffer during its transmission through an optical waveguide has received a great deal of attention in the recent years. We...