80 Gbit/s, 256 QAM coherent transmission over 150 km with an injection-locked homodyne receiver

Keisuke Kasai, Yixin Wang, Shohei Beppu, Masato Yoshida, Masataka Nakazawa

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

We demonstrate an 80 Gbit/s, 5 Gsymbol/s 256 QAM coherent optical transmission by employing an injection-locked homodyne detection circuit based on both fiber lasers and LDs. With either circuit, low phase noise carrier-phase synchronization between the transmitted data signal and an LO were achieved with a phase noise variance of only 0.2 degrees. As a result, we have successfully transmitted an 80 Gbit/s data signal over 150 km with a simple receiver configuration. This is the highest QAM multiplicity yet realized with injection-locked homodyne detection.

Original languageEnglish
Pages (from-to)29174-29183
Number of pages10
JournalOptics Express
Volume23
Issue number22
DOIs
Publication statusPublished - 2015 Nov 2

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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