Anders Bjarklev has written:

'Optical fiber amplifiers' -- subject(s): Fiber optics, Lasers, Optical amplifiers, Optical communications

'Photonic Crystal Fibers'

• as a material, nothing
• as a device to perform the function, vacuum tubes or magnetic amplifiers

Semiconductor lasers are diodes which are electrically pumped. Recombination of electrons and holes created by the applied current introduces optical gain. Reflection from the ends of the crystal form an optical resonator, although the resonator can be external to the semiconductor in some designs.

Finisar is an electronics manufacturing company based in Sunnyvale, California, USA. They specialise in products related to optical communications such as optical amplifiers and optical modules.

Douglas Baney has written:

'Optical power and wavelength for single-source simulation of EDFA WDM gain' -- subject(s): Multiplexing, Optical amplifiers, Optical fibers