Suppression of large error floor in 1024 QAM digital coherent transmission by compensating for GAWBS phase noise

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

There is a large error floor in an ultra multi-level digital coherent transmission signal of 1024 QAM or higher, and we have yet to determine its origin. In this paper, we show that this large error floor results from guided acoustic-wave Brillouin scattering (GAWBS) phase noise. We prove experimentally that such an error floor can be greatly reduced by compensating for the GAWBS noise with a phase modulation technique. We show that the BER of a 1024 QAM signal was reduced from 8.7 × 10−4 to 2.7 × 10−4 after a 160 km transmission with GAWBS noise compensation. Furthermore, we successfully extend the transmission distance from 160 to 240 km with a 7% overhead forward error correction.

Original languageEnglish
Pages (from-to)36691-36698
Number of pages8
JournalOptics Express
Volume27
Issue number25
DOIs
Publication statusPublished - 2019 Dec 9

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Fingerprint Dive into the research topics of 'Suppression of large error floor in 1024 QAM digital coherent transmission by compensating for GAWBS phase noise'. Together they form a unique fingerprint.

Cite this