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Balanced 3×3 port phase diversity receiver with reduced impact of thermal noise

Balanced 3×3 port phase diversity receiver with reduced impact of thermal noise

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© The Institution of Electrical Engineers
Published

The first 3×3 port balanced phase diversity receiver in which thermal noise has the same impact as in heterodyne receivers was realised although three preamplifiers are used. Experimental and theoretical results which prove the reduced impact of thermal noise compared with a conventional 3×3 port receiver are presented.

Inspec keywords: diversity reception; optical communication equipment; optical fibres

Other keywords: balanced receiver; 3×3 port phase diversity receiver; heterodyne receivers; thermal noise; preamplifiers

Subjects: Fibre optics; Optical communication

References

    1. 1)
      • L.G. Kazovsky . Multichannel coherent optical communications systems. J. Lightwave Technol. , 8 , 1095 - 1107
    2. 2)
      • J.X. Kan , G. Jacobsen , E. Bødtker . Noise performance of Gbit/s tuned optical receivers. Electron. Lett. , 434 - 435
    3. 3)
      • E. Patzak , R. Langenhorst . Sensitivity degradation of conventional and balanced 3×3 port phase diversity DPSK receivers due to thermal and local oscillator intensity noise. Electron. Lett. , 545 - 547
    4. 4)
      • A.W. Davis , M.J. Pettitt , J.P. King , S. Wright . Phase diversity techniques for coherent optical receivers. J. Lightwave Technol. , 561 - 572
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