Optical gain spectrum of GeO2-SiO2 Raman fibre amplifiers

Technique for highly sensitive measurement of Raman gain coefficient of optical fiber using pump/signal sum-frequency lock-in-detection

“…The effective length was calculated to be 49.8 m. OW19.pdf fibers with core doped with GeO2 [10]. The peak of gR/Aeff coefficient was found to 2.36 W'lkm'1 and using a mode field area of 22.9 Fm2 we obtained a peak Raman gain coefficient gR of 5.4x10-14 m/W.…”

Performance study of macro-bending EDFA/Raman hybrid optical fiber amplifiers

“…[19] and the values of Raman cross section are given in Refs. [13,20,21], the other input values of our model are listed in Tables 1-3.…”

Design and analysis of a novel multipumped Raman fiber amplifier

“…Heavy GeO 2 -doped optical fibers were adopted as gain media since the fibers have more symmetrical gain curve than fused silica fibers [5]. It is known that the gain created by a multi-wavelength pumping is approximately described by a linear superposition of each gain by individual pumping.…”