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Dopant dependence of effective nonlinear refractive index in GeO2- and F-doped core single-mode fibers

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2 Author(s)
Nakajima, K. ; NTT Access Network Service Syst. Labs., Ibaraki, Japan ; Ohashi, M.

We describe the dopant dependence of the effective nonlinear refractive index n/sub 2eff/ in GeO/sub 2/- or F-doped core fibers theoretically and experimentally. We show that the dopant dependence of the nonlinear refractive index n/sub 2/ of F-doped bulk glass is the inverse of that of GeO/sub 2/-doped bulk glass. We also show that the effective nonlinear refractive index n/sub 2eff/ in F-doped core fibers, estimated by using the dopant content dependence of n/sub 2/, is in good agreement with our experimental results. Moreover, we confirm that n/sub 2eff/ in an optical fiber strongly depends on the refractive index profile of its core.

Published in:

Photonics Technology Letters, IEEE  (Volume:14 ,  Issue: 4 )