Photonic amplifier

A Photonic amplifier is a piece of 24th century technology.

In 2372, a group of rogue Jem'Hadar attacked Deep Space 9 and stole several photonic amplifier, along with other technologies such as EPS power stabilizers and microfusion initiators, to be used to bring an Iconian gateway in the Gamma Quadrant online. 

In 2376, Geordi La Forge used several photonic amplifiers to open an Iconian gateway that was aboard a Petraw ship.