Abstract: The invention concerns a method for transmission of data signals from a transmitting device (BS) to a receiving device (RAH1) using an envelope elimination and restoration amplifier (EER1, EER2) for signal amplification, wherein the data signals are represented by envelope signal components and phase signal components in a first part of the envelope elimination and restoration amplifier (EER1, EER2) located in the transmitting device (BS), the envelope signal components or phase signal components are transmitted over at least one optical connection (OF1, OF2) from the transmitting device (BS) to the receiving device (RAH1), and the envelope signal components or phase signal components are converted from optical signals into electrical signals in said receiving device (RAH1), an envelope elimination and restoration amplifier, a transmitting device, a receiving device, and a communication network therefor.

Abstract: Photonic power switch and method of controlling current flow in the photonic power switch, the photonic power switch comprising an avalanche photo diode installed on a switch element, the switch element comprising a carrier donor layer and a channel layer. Photons are injected in the avalanche photo diode for generating electrical charge carriers by photoeffect, and the generated charge carriers are accelerated the by an electric field so as to produce an avalanche effect and are injected from the avalanche photo diode into the carrier donor layer of the switch element. A conduction layer built between the donor layer and the channel layer of the switch element is modulated, thereby modulating a current flow between a drain and a source of the power switch through said conduction layer.