Corning Incorporated
MULTICORE OPTICAL FIBER WITH CHLORINE DOPED CORES

Abstract:

A multicore optical fiber includes a first core, a second core, and a common cladding. The first core includes silica and greater than 3 wt % chlorine, a first core centerline, a relative refractive index .DELTA..sub.1MAX, and an outer radius r.sub.1. The second core includes silica and greater than 3 wt % chlorine, a second core centerline, a relative refractive index .DELTA..sub.2MAX, and an outer radius r.sub.2. A spacing between the first core centerline and the second core centerline is at least 28 micrometers and a crosstalk between the first core and the second core is .ltoreq.-30 dB, as measured for a 100 km length of the multicore optical fiber operating at a wavelength of 1550 nm.