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We report on new Yb-doped fluorosilicate optical fibers with reduced strength of Brillouin, Raman, and thermal Rayleigh scattering. Yb3+ absorption spectra strongly resemble borate glasses, with ultra-flat absorption in the 940nm region.
Stimulated Brillouin scattering (SBS) limits the amount of light per unit bandwidth that can be transmitted down or generated in an optical fiber. As such, it typically has the lowest threshold of all the nonlinear processes in narrow line-width systems and is a major limitation in the scaling fiber lasers to higher powers. This paper describes how thoughtful consideration of the materials from which...
This talk will focus on optical fibers of novel yet practical compositions, fabricated using the molten core process, enable a wide variety of unusual and highly useful properties of interest to defense, communications, and sensing applications.
This paper describes novel optical fibers employing intrinsically low Brillouin and Raman gain materials. Such fibers enable continued scaling to higher optical powers critical for their use in modern communication and defense systems.
Reported here is a straight-forward and flexible method to fabricate silica optical fibers of circular cladding cross-section and rectilinear cores whose aspect ratio and refractive index profile changes with position along the fiber in a deterministic way. Specifically, a modification to the process recently developed to produce longitudinally-graded optical fibers, LGFs [Opt. Express 20 (2012) 17394–17402],...
Reported here are optical fibers exhibiting significant longitudinal changes in optical properties over short lengths. The Brillouin gain is found to decrease by over 6 dB relative to a standard optical fiber as a result
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