Patent ID: 6496634
Filing Date: 2002-12-17
Classification: G02B,H01S

Abstract:
An apparatus, comprising:a Raman amplifying gas filled optical fiber, the Raman amplifying gas filled optical fiber having an axis, the Raman amplifying gas filled optical fiber comprising a core region and a cladding region surrounding the core region, the Raman amplifying gas filled optical fiber containing one or more holes, the holes filled with a Raman active gas, wherein the density of holes and the density of gas within the holes is sufficient so that light having a first frequency f1 propagating within the core region of the Raman amplifying gas filled optical fiber is amplified when the fiber is pumped with a pump laser having a second frequency f2 differing from the first frequency f1 by a Raman shift fR corresponding to the Raman active gas.