Patent ID: 6285494
Filing Date: 2001-09-04
Classification: C03B,C03C,H01S

Abstract:
An amplifying optical fiber comprisingan optical fiber core and an optical fiber sheath, where more than half of the volume of the optical fiber core is made of a material adapted to transmit radiation in a wavelength band of radiation intended to be transmitted along said optical fiber, and where amplifier material of the amplifying optical fiber comprisesstatistically distributed complexes of rare-earth ions, selected from the group consisting of erbium, neodymium and praseodymium, which are sheathed by a trifluoride separator substance, said amplifier material being adapted to amplify radiation in said wavelength band,wherein the amplifier material comprises amorphous agglomerates from a plurality of complexes, thereby achieving a 40 dB amplification in a 1330 nm wavelength range with a required pumping power of less than 100 mW.