Adaptive threshold adjustment for signal-distortion-free digital-coherent optical demodulation system

Akito Chiba, Takahide Sakamoto, Tetsuya Kawanishi

研究成果: Article査読

10 被引用数 (Scopus)

抄録

Optical quadrature amplitude modulation (QAM) attracts considerable attention in the enhancement of communications capacity, due to its high spectral efficiency. However, this modulation format is more sensitive to signal distortion than conventional formats, making it more difficult to create, transmit, and detect signals. In this paper, we propose an adaptive scheme for demodulation of the distorted optical signals with paying attention to use of DSP-technology. The scheme is based on the adjustment of the thresholds against the signal distortion. Successful demodulation of optical QAM signals is demonstrated with a sufficiently low bit-error rate.

本文言語English
ページ(範囲)21647-21655
ページ数9
ジャーナルOptics Express
16
26
DOI
出版ステータスPublished - 2008 12 22
外部発表はい

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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