LiGe2(PO4)(3) conductive lines composed of closely compacted crystalline particles were formed on a 15Li(2)O-2.5Al(2)O(3)-31.5GeO(2)-9TiO(2)-4.5NiO-37.5P(2)O(5) (mol %) glass surface by a continuous wave Yb fiber laser irradiation (lambda=1078 nm) using the nickel atom heat processing method. Nickel(II) ion was proved to be an efficient optical active absorbent for Yb fiber laser irradiation. Homogeneous and smooth crystal lines with a uniform width of about 30 mu m were obtained with a laser power of 0.6 W. X-ray diffraction, micro-Raman spectra, optical microscope, scanning electron microscopy, and impedance measurements were used to characterize the laser-patterned glass. The Li+-ion conductivity of the laser-patterned glass was about 5-10 times higher than that of the as-prepared glass due to the formation of LiGe2(PO4)(3) conductive crystalline phase from glass matrix by Yb laser irradiation. (C) The Electrochemical Society.