Small-mode optical fiber optical link for space division multiplexing

摘要

SOLUTION: This invention relates to an optical link having N (N 2) optical fibers. Each optical fiber comprises an optical core and an optical cladding surrounding the optical core. Wherein the optical core comprises _I 1 single _IAnd has a radius of R_1i Where i [1; N] is the index specifying the optical fiber. The optical cladding is a region surrounding the optical core called a trench and having a refractive index n_TrenchIs depressed. According to an embodiment of the present invention, for all the optical fibers of the link, the optical core radius R_1iAnd the length L_IAnd, R_1i 13.5 m, and is selected so as to satisfy the quality criterion C. Thus, the present invention provides a low-mode optical fiber link that can guide more LP modes than prior art FMF links and minimizes mode group delay differences.(FIG.