Analysis of bit rate dependence up to 80 Gbit/s of a simple wavelength converter based on XPM in a SOA and a shifted filtering

OPTICS COMMUNICATIONS

卷:281

Article

Girault, G.¹  Clarke, A. M.²  Reid, D.²  Guignard, C.²  Bramerie, L.¹  Anandarajah, P.²  Barry, L. P.²  Simon, J. -C.¹  Harvey, J.³ 

[1] Univ Rennes, CNRS Foton Enssat, F-22305 Lannion, France

[2] Dublin City Univ, Sch Elect Engn, RINCE, Dublin 9, Ireland

[3] Univ Auckland, Dept Phys, Auckland, New Zealand

关键词: All-optical switch;    Frequency-resolved optical gating;    Semiconductor optical amplifier;    Shifted bandpass filtering;    Wavelength conversion;    Ultrafast;   

DOI  :  10.1016/j.optcom.2008.08.036

来源: Elsevier

【 摘 要 】

This paper provides the analysis of wavelength converted pulses obtained with a simple semiconductor optical amplifier (SOA)-based wavelength conversion scheme, which exploits cross phase modulation (XPM) in an SOA in conjunction with shifted filtering. The analysis includes experimental measurements of the back-to-back system performances as well as frequency-resolved optical gating (FROG) characterisations of the wavelength converted pulses. These measurements are implemented at different bit rates up to 80 Gbit/s and for both red and blue-shifted filtering, particularly showing different patterning effect dependencies of red and blue-shifting techniques. This analysis is developed by the addition of a numerical study which corroborates the experimental results. A further understanding of the different performances of red and blue filtering techniques, presented in the literature, can thus be proposed. The placement of the filter to undertake red-shifted filtering (RSF) allows us to achieve very short pulse widths but high bit rate operation is limited by pattern effects. The blue-shifted filtering (BSF) technique shows optimum performance as regards to patterning effects even if the wavelength converted pulses can be larger. (C) 2008 Elsevier B.V. All rights reserved.

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