The book Gradient Index Optical Elements- fabrication and characteristics are aimed for researchers working in the field of Gradient Index (GRIN) Optics. This book examines the fabrication and characterization challenges in GRIN optical elements and presents effective methods for meeting them through researches carried out by the authors. The work is carried out in varieties of sample geometry like a rectangular planer, circular cylinder, and elliptical cylinder in order to generate refractive index variation with axial, radial, and elliptical shape. Among others, the ion exchange technique...