We report a variable optical attenuator (VOA) on silicon-on-insulator (SOI) with folded silicon waveguides and TiW heaters to improve the thermal efficiency. The measured extinction ratio of the ...

The directional attenuators are devices with attenuation dependent on direction of propagation of RF energy. A new type of the directional attenuator was developed, designed and tested. The advantages ...

Objectives Fulminant viral hepatitis (FH) remains a serious clinical problem for which the underlying pathogenesis remains unclear. The B and T lymphocyte attenuator (BTLA) is an immunoglobulin-domain ...

When it comes to finding a reliable power source for household appliances, an inverter generator is the shiniest contender. They’re ultra-quiet, safe for vulnerable electronics, and more ...