| Full text | |
| Author(s): |
Helio, Jose C. Junior, Jr.
;
Sutili, Tiago
;
Figueiredo, Rafael C.
;
Mello, Darli A. A.
Total Authors: 4
|
| Document type: | Journal article |
| Source: | IEEE Photonics Journal; v. 14, n. 4, p. 7-pg., 2022-08-01. |
| Abstract | |
In this paper, we evaluate the selective combination of algorithms for fiber nonlinearity compensation, transceiver impairments mitigation and variable-rate coding in unrepeatered optical transmission. A post-emphasis filter and a two-stage 4x4 multiple-input and multiple-output equalizer compensate the impact of bandwidth limitations and in-phase and quadrature skew. Nonlinear compensation is accomplished by a fast-converging adaptive digital back-propagation algorithm and maximum likelihood sequence estimation. Forward error correction is provided by a variable-rate spatially-coupled low-density parity-check code. The performance and complexity of the proposed digital subsystems are experimentally evaluated by the unrepeatered wavelength division multiplexing transmission of 17x200-Gb/s (DP-16QAM 32-GBd) channels over 350-km of large effective area and low-loss single-mode fibers. The experimental results for different combinations of algorithms elucidate the trade-off of complexity and performance in unrepeatered optical transmission. (AU) | |
| FAPESP's process: | 15/24517-8 - Photonics for next generation internet |
| Grantee: | Hugo Enrique Hernández Figueroa |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 15/24341-7 - New strategies to confront with the threat of capacity exhaustion |
| Grantee: | Helio Waldman |
| Support Opportunities: | Research Projects - Thematic Grants |