210 nm E, S, C and L Band Multistage Discrete Raman Amplifier

Abstract

We demonstrate a multistage Raman amplifier for 210 nm signal amplification with 15 dB gain and 8.1 dB maximum noise figure enabling ESCL-band transmission with 10 Gb/s NRZ signals over 70 km SMF.

Multi-Band ESCL Transmission Supported by Bismuth-Doped and Raman Fiber Amplification

“…1, with the first DRA stage, targeting S-band amplification, consisting of an isolator, a 7.5 km-long inverse dispersion fiber (IDF), a WDM coupler, a pump combiner, and three pump diodes at 1365, 1385, and 1405 nm. The second stage preferentially amplifies the C-and L-bands, and consists of the same set of components, with the exception of the pump combiner, and pump laser diodes at 1425, 1445, 1465, 1485, and 1508 nm [30]. After this, both amplified signals are combined with a 1410-1457 nm/1470-1620 nm FWDM.…”

Multi-Band Transmission Over E-, S-, C- and L-Band With a Hybrid Raman Amplifier

“…Similarly, in the S-, C-and L-band, amplification bandwidths of 150 and 135 nm have also been achieved using a dual-stage and dual-band DRAs [26], [27]. DRAs have also been demonstrated over the E-, S-, C-and L-band, where an amplification bandwidth of 210 nm was achieved and 200 Gbit/s per channel transmission was performed over signals in the range of 1410-1605 nm potentially enabling a transmission bandwidth of 21.8 THz [28], [29]. Together with experimental designs and demonstrations using Raman amplifiers, real-time nonlinear modelling of MBT is an essential tool to introduce intelligence, achieve the best resource allocation and maximise system throughput in the optical networks [30], [31].…”

“…In this paper, we present detailed experimental results, combined with analytical and numerical modelling of MBT enabled by the hybrid DDRA presented in [36]. The proposed DDRA was experimentally characterized using mod-ulated signals from 1410-1605 nm, corresponding to 195 nm overall bandwidth.…”