title: Dependence of Raman gain on relative index difference for GeO(2)-doped single-mode fibers.
abstract: Raman gain has been measured for five single-mode fibers with different relative index differences up to 1.0%. Using an experimental equation relating the mode-field radius to the relative index difference, a simple and practical relation between the Raman gain and the relative index difference has been established. The Raman-gain constant for pure SiO(2) has been evaluated to be 7.4 x 10(-14) m/W.
authors.forename: T
authors.initials: T
authors.lastname: Nakashima
authors.forename: S
authors.initials: S
authors.lastname: Seikai
authors.forename: M
authors.initials: M
authors.lastname: Nakazawa