Patent ID: 6829082
Filing Date: 2004-12-07
Classification: H01S

Abstract:
An amplifier for amplifying an optic signal, said amplifier comprising:a signal source transmitting the signal, wherein the signal contains a signal portion with wavelengths between about 1.55 and about 1.65 microns; a first optical manipulator aligned with the signal, said first manipulator consisting of at least one of the group of at least one collimator and at least one concentrator; an input pump aligned to overlap the signal with a pump light; at least one crystalline host, doped with erbium ions, placed to be excited by the pump light and impinged by the signal after the first manipulator whereby the energy level of at least the signal portion is amplified by the host; and wherein the host is selected from a group consisting of: calcium gallium sulphide; yttrium aluminum garnet; and yttrium lithium fluoride.