Patent ID: 6567583
Filing Date: 2003-05-20
Classification: G02B

Abstract:
A single-mode to multimode converter, comprising:a substrate; a single-mode waveguide attached to the substrate, the single-mode waveguide having an exit face; a multimode waveguide attached to the substrate, the multimode waveguide having an entrance face, wherein the single-mode waveguide and multimode waveguide are axially aligned, and wherein an optical pathway extends from the exit face to the entrance face; and a first lens and a second lens attached to the substrate and positioned in the optical pathway, the first and second lenses being separated by an optical link gap, such that a focal point of the first lens and the second lens is substantially positioned on the entrance face, wherein the first and second lenses are comprised of a sapphire and are adapted to condition a laser beam propagating along the optical pathway to excite a number of modes in the multimode waveguide.