Optical 8QAM and 8PSK synthesis by cascading arbitrary 2QAM with squared QPSK

Guo Wei Lu, José Manuel Delgado Mendinueta, Takahide Sakamoto, Naoya Wada, Tetsuya Kawanishi

研究成果: Article査読

4 被引用数 (Scopus)

抄録

In dynamic optical networking scenarios, it is desirable that the optical transmitter chooses the most suitable modulation format in order to achieve optimal transmission performance. Owing to the ability of switching among different modulation formats, flexible optical transmitters based on reconfigurable optical devices are becoming a key component for the implementation of future flexible optical networks. In this paper, we experimentally demonstrate a flexible 8-ary transmitter to achieve adaptive switching between 8-ary phase-shift keying (8PSK) and circular 8-ary quadrature-amplitude modulation (8QAM) through reconfiguration of two cascaded in-phase/quadrature (IQ) modulators with different driving signals and biasing conditions. An arbitrary binary quadrature-amplitude modulation (2QAM) with constant or non-constant amplitude is proposed and experimentally demonstrated using an IQ modulator. Then, optical 8PSK or 8QAM modulation formats are successfully synthesized when a standard squared QPSK modulator is cascaded with a constant-amplitude or non-constant-amplitude 2QAM, respectively.

本文言語English
ページ(範囲)21366-21374
ページ数9
ジャーナルOptics Express
23
16
DOI
出版ステータスPublished - 2015 8月 10
外部発表はい

ASJC Scopus subject areas

  • 原子分子物理学および光学

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