Penny & 2 Cores cropped 2

Here are a couple photos of Faraday rotation isolators. Each of the two cores shown with the penny have a CVD diamond disc to remove heat (the thin white discs). The core shown above the date on the dime (left) does not have a diamond disc. This is the smallest core the company makes. It is less than 5 mm long. The cores comprise two alumina cones, a ferrite cylinder, and a CVD diamond disc (except for the one on the dime). Alumina is a type of ceramic. The cores are precisely aligned and mounted in gold plated aluminum waveguide blocks. The final assemblies are less than 1 inch cubed. The smallest core (the one on the dime) operates up to 400 GHz. At 400 GHz, the electric field switches polarity 800 trillion times per second. [SUBMITTED PHOTOS]