Patent ID: 8861913
Filing Date: 2014-10-14
Classification: G02B,H01S

Abstract:
1. An optical fiber configured to propagate a single mode at a wavelength, λ, the optical fiber comprising: a core region having a core size, 2ρ; and a cladding region surrounding said core region, said cladding region comprising a plurality of cladding features disposed in a matrix, said matrix having a refractive index different from refractive indices of said plurality of cladding features, said plurality of cladding features having an average spacing, Λ, and an average size, d, said plurality of cladding features arranged in a number of rows, N, said plurality of cladding features substantially confining propagation of said single mode to said core region, wherein said average size, d, of said plurality of cladding features is greater than about 60% of said average spacing, Λ, of said plurality of cladding features, and wherein the number of rows N is greater than or equal to 1 and less than or equal to 4.