Systems with multiple element transmitter and receiver arrays have been shown to achieve very high spectral efficiencies. This is especially important in wireless applications that are power, bandwidth and complexity limited. The achievable capacity depends on the channel between the transmitters and the receivers, and a common assumption is that of a rich scattering environment. However an env...

We study the propagation of femtosecond pulses in nonlinear metal-dielectric plasmonic waveguiding structures by employing the finite-difference time-domain numerical method. Self-focusing of plasmon pulses is observed for defocusing Kerr-like nonlinearity of the dielectric medium due to normal dispersion. We compare the nonlinear propagation of plasmon pulses along a single metal-dielectric in...

We demonstrate a tunable on chip polymer waveguide micro ring resonator (MRR) device. The transmission spectrum and extinction ratio are controlled by electrowetting on dielectric (EWOD), via the application of voltage to a droplet. As a result the droplet covers a portion of the MRR waveguide and changes its effective refractive index. This method can be used for efficiently tuning a variety o...

A simple method for the production of a polarised Nd:Y Al O on Y Al O planar waveguide laser is reported. 3 5 12 3 5 12 A 50nm layer of Au deposited on the surface of an unclad, 8.3 μm thick core region has produced an improvement in the TE/TM polarisation extinction ratio from 7dB to 27dB. The M of the beam in the guided 2 plane has been reduced from 1.53 ±0.04 in an uncoated region of the wav...

We developed a new building block for constructing planar microwave circuitry: bulk titanium waveguide. The waveguide is formed by deep trench etching, dielectric gap filling, and planarization. The high aspect ratio of the resulting structure provides superior field confinement, low crosstalk, therefore a small footprint. To enable bulk titanium as a substrate compatible with microfabrication,...

In this paper, we present the extraction for effective material parameters for a metamaterial from TE or TM waveguide measurements with generalized sheet transition conditions (GSTCs) used to provide electric and magnetic surface susceptibilities that approximate boundary effects between the metamaterial and air. The retrieval algorithm determines the effective material properties via scatterin...

Concrete is the second most-used material in the world and with its production comes the need for better quality control. The strength of concrete is heavily influenced by its moisture content when it is formulated, giving rise to a need for an accurate measurement of that moisture content. This work focuses on the dielectric properties of water between 10MHz and 4 GHz to obtain information abo...

We analyze a dielectric waveguide with a photonic crystal core. Using constant frequency contour analysis, we show that the modal behavior of this structure is drastically different from that of a conventional slab waveguide. In particular, at a given frequency the lowest-order guided mode can have an odd symmetry or can have more than one nodal plane in its field distribution. Also, there exis...

In this work, we proposed a technique in which two-dimensional (2-D) confinement of light is achieved in one-dimensional (1-D) planar waveguide by loading it with a low refractive index material. A waveguide design is based on ZnO/Al2O3 dielectric materials for integrated photonics. These waveguides are capable of propagating TE and TM polarization at 0.633 μm visible light. Based on these wave...

The concept of adiabatic mode transformation between silicon waveguide and surface plasmon-polariton modes in subwavelength metal-dielectric slots is investigated. The mode transformer consists of a modulated-index slot region, which is bound by two metal slabs. Using the design scheme, we will show that the optical dispersion of a modulated-index metal slot waveguide can be engineered well abo...