Corning Incorporated
Coupled multicore optical fiber

Abstract:

Multimode optical fibers are disclosed herein. In some embodiment disclosed herein, a multimode optical fiber having a bandwidth of greater than 2 GHzkm includes: a glass matrix having a front endface, a back endface, a length (L), a refractive index n.sub.20 and a central axis (AC); and a plurality of cores arranged within the glass matrix, wherein the plurality of cores run generally parallel to the central axis between the front and back endfaces and having respective refractive indices n.sub.50, wherein n.sub.50>n.sub.20, wherein the glass matrix serves as a common cladding for the plurality of cores so that each core and the common cladding define a waveguide, wherein each core is a single mode at an operating wavelength; and wherein any two cores have an center-to-center spacing s of 3 .mu.m to 20 .mu.m and a coupling coefficient of greater than 10 m.sup.-1 but less than 200 m.sup.-1.