On the Performance of Joint-Core Carrier-Phase Estimation in the Presence of Intercore Skew
Artikel i vetenskaplig tidskrift, 2019

The sharing of lasers in space-division multiplexed multicore-fiber transmission yields correlated phase noise across the spatial channels. As a result, system performance can be improved through the use of joint-core carrier-phase estimation (CPE). However, the presence of intercore skew can reduce the potential of such schemes. This paper studies the effects of skew on pilot-aided joint-core CPE, where via simulations, it is shown that joint-core processing can be made to perform similarly to or better than separate-core processing for any amount of skew. It is shown that for a given signal-to-noise ratio (SNR) and skew, the performance of joint-core CPE relative to separate-core CPE is highly dependent on the ratio of the light-source linewidth to the local oscillator (LO) linewidth. In general, the performance of joint-core CPE in the presence of skew improves as the LO linewidth decreases compared to the light-source laser linewidth, assuming that the spatial channels are digitally realigned at the receiver.

multicore fiber

skew

carrier-phase estimation

space-division multiplexing

coherent communication

Författare

Arni Alfredsson

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Erik Agrell

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Magnus Karlsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Henk Wymeersch

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Journal of Lightwave Technology

0733-8724 (ISSN)

Frigöra full fiberoptisk kapacitet

Knut och Alice Wallenbergs Stiftelse, 2019-07-01 -- 2024-06-30.

Ämneskategorier

Telekommunikation

Kommunikationssystem

Signalbehandling

DOI

10.1109/JLT.2019.2931987

Mer information

Senast uppdaterat

2019-08-13