Patent ID: 6252701
Filing Date: 2001-06-26
Classification: H01S

Abstract:
An optical fiber amplifier having a signal light source transmitting a signal light and an exciting light source exciting said signal light, wherein said optical fiber amplifier comprises:(a) a light emitting element having a wide spectrum range,(b) a fiber grating having a diffraction grating adapted to reflect only signal light having a wave length which is on the longer wave length side than a center wave length of said light emitting element, and which wave length is in a range that can be amplified by said optical fiber amplifier,(c) an inline isolator having a high isolation ability in the same wave length range as that of said signal light, and(d) an optical fiber adapted to stimulatedly amplify said signal light,(e) said signal light source and said exciting light source being formed of the same light emitting element.