MgO:LiNbO_3 single-crystal fiber with magnesium-ion in-diffused cladding

Abstract

A Mg-ion in-diffusion process was applied to form an optical guiding structure in LiNbO(3) single-crystal fibers. A parabolic refractive-index profile was formed in a 56-microm-diameter, c-axis MgO:LiNbO(3) fiber, yielding quasi-single-mode (two modes) propagation.