Recently, photonic crystals have paved the way to control signals. Therefore, this research numerically investigated design of optical switch using guided-mode resonances in operating a communication window around 1.55 ?m. The device is based on dielectric slab waveguide make it compatible with waveguides circuits. Moreover, two signals are used and termed as data signal signal. coupled into an...

The gradient perovskite material of potassium niobate is investigated in this work. As a result the research, change properties was found: transformations IR absorption spectrum, magnitude half-wave voltage depending on composition grown crystal. value for plates cut from crystalline varied 1500 to 1700 V with range K x Nb 2-x O 5-2x at x=0.9..1.

Investigation of Spatial Intensity Distribution by Using an Optical Diffuser in the Colorimetric Microscopy Setup

Optical-window birefringence is frequently a major obstacle in experiments measuring changes in the polarization state of light traversing a sample under investigation. It can contribute a signal indistinguishable from that due to the sample and complicate the analysis. Here, we explore a method to measure and compensate for the birefringence of an optical window using the reflection from the l...

Over the recent years, routing and wavelength assignment algorithms (RWA) have been employed to increase the performance of existing optical network architectures. However, these methods are not longer sufficient as the traffic over the Internet increases rapidly and new switching optical network architectures are needed to provide additional bandwidth. This paper reports an investigation into ...

Optical-window birefringence is frequently a major obstacle in experiments measuring changes in the polarization state of light traversing a sample under investigation. It can contribute a signal indistinguishable from that due to the sample and complicate the analysis. Here, we explore a method to measure and compensate for the birefringence of an optical window using the reflection from the l...

With ultracold 87Srconfined in a magic wavelength optical lattice, we present the most precise study (2.8 Hz statistical uncertainty) to date of the 1S0-3P0 optical clock transition with a detailed analysis of systematic shifts (19 Hz uncertainty) in the absolute frequency measurement of 429 228 004 229 869 Hz. The high resolution permits an investigation of the optical lattice motional sideban...