On the effect of receiver impairments on incoherent QAM systems

N. Sotiropoulos, A.M.J. Koonen, H. Waardt, de

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Abstract

Incoherent QAM is a differentially detected, multilevel modulation format that can improve spectral efficiency in optical communication systems. The effect of three receiver impairments on the performance of an incoherent QAM system is assessed in this paper for the first time. Specifically, the impairments studied are an unbalanced Mach-Zehnder Interferometer (MZI,), the phase detuning of the MZI and the amplitude imbalance of the Balanced Photodetectors (BPD). Extensive simulations were carried out and results indicate that incoherent QAM is quite robust in respect to the aforementioned impairments, with the phase detuning being the most critical parameter leading to peiformance degradation
Original languageEnglish
Title of host publicationProceedings of the 15th Annual Symposium of the IEEE Photonics Benelux Chapter, 18-19 November 2010, Delft, The Netherlands
EditorsJ. Pozo, M. Mortensen, P. Urbach, X. Leijtens, M. Yousefi
Place of PublicationDelft
PublisherTNO
Pages29-32
ISBN (Print)978-90-78314-15-8
Publication statusPublished - 2010

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