Abstract

Stimulated Brillouin Scattering (SBS) limits the narrowband laser power that can be transmitted through single-mode optical fibers. This impacts telecommunication applications, where low powers are transmitted over long fibers, and coherent power delivery applications, where high powers over short lengths are typical. Several methods have been proposed to overcome this problem.^1,2 Here we report on large core fibers that are kept single-mode by using an appropriately smaller core-to-cladding index differential. The consequently weaker mode confinement decreases the tolerance to bending. We have fabricated several large-core fibers and verified that they transmit more power than a standard single-mode fiber.

© 1993 Optical Society of America