OPTICS,LASERS AND PHOTONICS

An Optical Amplifier is a device which amplifies an optical signal without the need of converting into an electrical signal. Optical Amplifier is sometimes known to be a laser without an optical cavity or the one in which the feedback is being suppressed. These are basically important in optical communication and laser physics. They are also used as the optical repeaters in the long distance fiber optic cables in order to carry much of the world’s telecommunication links.