Erbium-doped fibre amplifiers (EDFAs) represent a cornerstone in modern optical communications, offering high gain amplification across the C- and L-bands. These devices leverage the unique energy ...

The amplifier developed by Chalmers researchers is compact, measuring just a few centimeters, yet it can process ten times larger amounts of data per second than current optical communication systems.

A focus-stacked macro photograph of a fabricated gallium phosphide photonic chip featuring multiple spiral waveguides and other test structures. The chip width is just 0.55 cm across. Due to the high ...