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Compensation of quadrature imbalance in an optical coherent OQPSK receiver in presence of frequency offset

  • Xinying Li
  • , Bo Huang
  • , Yufeng Shao
  • , Junwen Zhang
  • , Shumin Zou
  • , Wuliang Fang
  • , Li Tao
  • , Jiangbo Zhu
  • , Chi Nan*
  • *Corresponding author for this work
  • Fudan University

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, we describe the impact of quadrature imbalance (QI) in the presence of frequency offset in an optical coherent offset quadrature phase shift keying (OQPSK) receiver. Arbitrary conjugate misalignment was realized in a 2×4 90° optical hybrid, and the ellipse correction (EC) method of quadrature imbalance was applied in our simulation. In the case of transmission, the EC method can significantly improve the system performance.

Original languageEnglish
Pages (from-to)288-291
Number of pages4
JournalFrontiers of Optoelectronics in China
Volume4
Issue number3
DOIs
Publication statusPublished - Sept 2011
Externally publishedYes

Keywords

  • ellipse fitting
  • frequency offset
  • offset quadrature phase shift keying (OQPSK)
  • quadrature imbalance (QI)

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