The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 2026
Filed:
Aug. 09, 2023
Corning Incorporated, Corning, NY (US);
Kevin Wallace Bennett, Hammondsport, NY (US);
Douglas Llewellyn Butler, Painted Post, NY (US);
Pushkar Tandon, Painted Post, NY (US);
CORNING INCORPORATED, Corning, NY (US);
Abstract
A multicore optical fiber including four cores arranged in a linear configuration, the centerline of each core being spaced from the centerline of an adjacent core by a distance x of about 30 microns or less, and each core having a relative refractive index Δ. A cladding surrounding each of the four cores, the cladding including an inner cladding region with a relative refractive index Δ, a depressed-index cladding region with a relative refractive index Δ, and an outer cladding region with a relative refractive index Δ, wherein Δ>Δ>Δand Δ>Δ>Δ. Furthermore, each core of the four cores has a mode field diameter, at a wavelength of 1310 nm, of about 8.1 microns or less, and cross talk between adjacent cores is about −18 dB or less at wavelengths of 1310 nm and 1550 nm per 2 km fiber length.