743 Artificial composite structures containing electric conducting elements or metamaterials have recently attracted much attention in view of their unique propp erties of negative magnetic susceptibility and backk ward wave propagation. In contrast to crystals, metamaterials allow control of the macroscopic charr acteristics by choosing the types and geometry of their structural elements [1–3]...

Certain types of random rearrangements of attracting sets (attractors) arising in the phase space of a ring resonator containing a nonlinear medium are studied numerically. It is shown that for certain values of the parameters we can reduce the 2-D mapping describing the evolution of the field in the resonator to 1-D and give a qualitative explanation of the threshold phenomena observed. A meth...

We study experimentally the dynamic tunability and self-induced nonlinearity of split-ring resonators incorporating variable capacitance diodes. We demonstrate that the eigenfrequencies of the resonators can be tuned over a wide frequency range, and significantly, we show that the self-induced nonlinear effects observed in the varactor-loaded split-ring resonator structures can appear at relati...

Fabrication and properties of an integrated optical ring laser of 60 mm diameter with Ti:Er:LiNbO3 waveguides are reported. Without any intracavity wavelength selective devices the laser emits at λ = 1603 nm. The potential of laser, passive and loss-compensated ring resonator as optical gyroscope is briefly discussed.

In this paper, a new design of demultiplexer based on two-dimensional photonic crystal ringresonator is proposed. The structure is made of a hexagonal lattice of silicon rods with therefractive index 3.46 in coefficient of air with refractive index 1. The transmission efficiencyand Quality factor for our proposed demultiplexer, respectively, are more than 65% and1600. The normalized transmissio...

A ring isolator is demonstrated for the first time by directly bonding a cerium-substituted yttrium iron garnet (Ce:YIG) onto a silicon ring resonator using oxygen plasma enhanced bonding. The silicon waveguide is 600 nm wide and 295 nm thick with 500-nm-thick Ce:YIG on the top to have reasonable nonreciprocal effect and low optical loss. With a radial magnetic field applied to the ring isolato...

This paper presents the results of an investigation into a combination of electric and magnetic planar resonators in order to design the building element of a volumetric metamaterial showing simultaneously negative electric and magnetic polarizabilities under irradiation by an electromagnetic wave. Two combinations of particular planar resonators are taken into consideration. These planar reson...