Performance optimization of PM-16QAM transmission system enabled by real-time self-adaptive coding

Zhen Qu, Yao Li, Weiyang Mo, Mingwei Yang, Shengxiang Zhu, Daniel C. Kilper, Ivan B Djordjevic

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

We experimentally demonstrate self-adaptive coded 5 × 100 Gb∕s WDM polarization multiplexed 16 quadrature amplitude modulation transmission over a 100 km fiber link, which is enabled by a real-time control plane. The real-time optical signal-to-noise ratio (OSNR) is measured using an optical performance monitoring device. The OSNR measurement is processed and fed back using control plane logic and messaging to the transmitter side for code adaptation, where the binary data are adaptively encoded with three types of low-density parity-check (LDPC) codes with code rates of 0.8, 0.75, and 0.7 of large girth. The total code-adaptation latency is measured to be 2273 ms. Compared with transmission without adaptation, average net capacity improvements of 102%, 36%, and 7.5% are obtained, respectively, by adaptive LDPC coding.

Original languageEnglish (US)
Pages (from-to)4211-4214
Number of pages4
JournalOptics Letters
Volume42
Issue number20
DOIs
StatePublished - Oct 15 2017

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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