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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 29, Iss. 10 — May. 15, 2011
  • pp: 1489–1499

40 Gb/s NRZ Wavelength Conversion Using a Differentially-Biased SOA-MZI: Theory and Experiment

Maria Spyropoulou, Nikos Pleros, Konstantinos Vyrsokinos, Dimitrios Apostolopoulos, Marios Bougioukos, Dimitrios Petrantonakis, Amalia Miliou, and Hercules Avramopoulos

Journal of Lightwave Technology, Vol. 29, Issue 10, pp. 1489-1499 (2011)

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We present theoretical and experimental performance analysis of 40 Gb/s Non-Return-to-Zero (NRZ) All-Optical Wavelength Conversion (AOWC) using a differentially-biased SOA-MZI. A frequency domain transfer function model for both the standard single-control SOA-MZI-based AOWC and for the differentially-biased SOA-MZI is analytically derived, exploiting first order perturbation theory techniques and showing that only the differentially-biased scheme can yield an almost flat low-pass filtering response enabling wavelength conversion at 40 Gb/s. The theoretically obtained results are also confirmed through experiments that demonstrate successful 40 Gb/s AOWC functionality for NRZ data signals only when a differentially-biased SOA-MZI configuration is employed, whereas an error-floor is obtained when 40 Gb/s NRZ AOWC with the standard single-control SOA-MZI scheme is attempted. The 1.7 dB negative power penalty obtained by the differentially-biased SOA-MZI architecture confirms its enhanced regenerative properties and its potential for extending 40 Gb/s optical transparent network dimensions by means of cascaded 2R AOWC stages.

© 2011 IEEE

Maria Spyropoulou, Nikos Pleros, Konstantinos Vyrsokinos, Dimitrios Apostolopoulos, Marios Bougioukos, Dimitrios Petrantonakis, Amalia Miliou, and Hercules Avramopoulos, "40 Gb/s NRZ Wavelength Conversion Using a Differentially-Biased SOA-MZI: Theory and Experiment," J. Lightwave Technol. 29, 1489-1499 (2011)

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