The term photonic crystals appears because of the analogy between electron waves in crystals and the light waves in artificial periodic dielectric structures. During the recent years the investigation of one-, two-and three-dimensional periodic structures has attracted a widespread attention of the world optics community because of great potentiality of such structures in advanced applied optical fields. The interest in periodic structures has been stimulated by the fast development of semiconductor technology that now allows the fabrication of artificial structures, whose period is comparable with the wavelength of light in the visible and infrared ranges.

http://ieeexplore.ieee.org/iel5/6354/16969/00781867.pdf

Photonic crystals

Thank you for reading principles of optics electromagnetic theory of propagation interference and diffraction of light. As you may know, people have search hundreds times for their favorite novels like this principles of optics electromagnetic theory of propagation interference and diffraction of light, but end up in harmful downloads. Rather than enjoying a good book with a cup of coffee in the afternoon, instead they are facing with some infectious bugs inside their computer.

Principles Of Optics Electromagnetic Theory Of Propagation Interference And Diffraction Of Light

Control of spontaneously emitted light lies at the heart of quantum optics. It is essential for diverse applications ranging from miniature lasers and light-emitting diodes, to single-photon sources for quantum information, and to solar energy harvesting. To explore such new quantum optics applications, a suitably tailored dielectric environment is required in which the vacuum fluctuations that control spontaneous emission can be manipulated. Photonic crystals provide such an environment: they strongly modify the vacuum fluctuations, causing the decay of emitted light to be accelerated or slowed down, to reveal unusual statistics, or to be completely inhibited in the ideal case of a photonic bandgap. Here we study spontaneous emission from semiconductor quantum dots embedded in inverse opal photonic crystals. We show that the spectral distribution and time-dependent decay of light emitted from excitons confined in the quantum dots are controlled by the host photonic crystal. Modified emission is observed over large frequency bandwidths of 10%, orders of magnitude larger than reported for resonant optical microcavities. Both inhibited and enhanced decay rates are observed depending on the optical emission frequency, and they are controlled by the crystals’ lattice parameter. Our experimental results provide a basis for all-solid-state dynamic control
of optical quantum systems.

Controlling the dynamics of spontaneous emission from quantum dots by photonic crystals

In order to enable optical systems to operate with a high degree of compactness and reliability it is necessary to combine large number of optical functions in small monolithic structures. A development, somewhat reminiscent of that that took place in Integrated Electronics, is now beginning to take place in optics. The initial challenge in this emerging field, known appropriately as "Integrated Optics", is to demonstrate the possibility of performing basic optical functions such as light generation, coupling, modulation, and guiding in Integrated Optical configurations. The talk will review the main theoretical and experimental developments to date in Integrated Optics. Specific topics to be discussed include: Material considerations, guiding mechanisms, modulation, coupling and mode losses. The fabrication and applications of periodic thin film structures will be discussed.

Integrated optics

To support bursty traffic on the Internet (and especially WWW) efficiently, optical burst switching (OBS) is proposed as a way to streamline both protocols and hardware in building the future gener...

Optical burst switching (OBS) - a new paradigm for an optical Internet

The problem of the scattering of a 3-D Gaussian beam incident at an arbitrary angle onto a gyrotropic slab is formulated and solved. New formulas for the scattered 3-D beam fields in the form of the single integrals are derived. They allow to reduce the time spent on the calculations of the scattered beam fields. Numerical results are presented.

Scattering of a three- dimensional Gaussian beam with circular cross section from a gyrotropic slab

The focusing properties of a truncated elliptic dielectric cylinder taken as a 2-D model of a dielectric lens are studied for the plane wave illumination. The Muller integral-equation (IE) technique is used for the analysis of the scattering problem. Such a full-wave mathematically correct method guarantees uniqueness of the solution for arbitrary set of parameters. In the discretization scheme, we also use analytical inversion of the canonical circular-cylinder counterpart of the problem and build a very efficient CAD tool. Numerical results for the near fields are presented and lens-focusing properties are studied for the E-polarization case.

Numerical analysis of truncated elliptic lenses for optical and sub-mm wave receivers

In paper the optical sensor allowing measuring both a direction and bend and stress values in building structures is described. The sensitive element of the sensor is the microstructured fiber with three cores. Distribution of mode fields in fiber cores depending on fiber structure and bend value is analyzed. The optimization of the sensitive element parameters depending on the purpose of use is proposed.

Vector bend sensor on the base of three-core microstructured fiber

To analyse an influence of intensity-dependent nonlinearity in analyte on surface plasmon (SP) excitation in Kretschman structure relevant wavelength-scale numerical modelling is performed by the method of single expression. At the fixed amplitude of intense incident wave a hysteresis in the reflectance is obtained revealing corresponding direction of angular interrogation depending on the sign of nonlinearity.

Conditions of surface plasmon excitation in Kretschmann structure at nonlinearity in analyte: Correct wavelenght-scale analysis by the method of single expression

The modeling and design of fiber lasers is an essential element of their development process. One of the areas of particular interest during the last years is the development of lanthanide ion-doped fiber lasers which operate at wavelengths exceeding 2000 nm. There are two main host glass materials developed for this purpose: fluoride and chalcogenide. One of the main specific aims of this contribution is therefore to comparatively study the properties of various numerical algorithms applicable to the design and modeling of fiber lasers operating at wavelengths exceeding 2000 nm. Hence, the convergence properties of selected algorithms implemented within various software environments are studied with a particular focus on the CPU time and calculation residual.

Marian Marciniak

Papers

Scattering of a three- dimensional Gaussian beam with circular cross section from a gyrotropic slab

Numerical analysis of truncated elliptic lenses for optical and sub-mm wave receivers

Vector bend sensor on the base of three-core microstructured fiber

Conditions of surface plasmon excitation in Kretschmann structure at nonlinearity in analyte: Correct wavelenght-scale analysis by the method of single expression

Comparative study of infrared fiber laser models