French engineer André Buhart has published the plans and open-source software to create a DIY "solar energy router" to manage PV overproduction. Depending on the configuration, the device can direct ...

In modern high power gyrotrons high-order volume modes are excited. This demands quasi-optical mode converters with large dimensions compared to the wavelength to convert the cavity mode into a ...

A low-power hybrid-integrated 40-Gb/s optical receiver is reported. The receiver consists of a broadband photodiode fabricated in a 0.18-μm Ge-on-SOI process packaged with an mm-wave electronic chip ...