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Optical bistability in a traveling-wave SOA connected to a DFB laser diode: theory and experiment

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4 Author(s)
D'Oosterlinck, W. ; Dept. of Inf. Technol., Ghent Univ. ; Morthier, G. ; Baets, R. ; Erneux, T.

We investigate the bistable response of a traveling-wave semiconductor optical amplifier (SOA) connected bidirectionally to a distributed feedback (DFB) laser diode. By contrast to dispersive DFB amplifiers, bistability is possible for a broad wavelength range of the injected optical signal. A theoretical analysis clarifies the origin of the phenomenon and the conditions under which it occurs. Numerical simulations and experimental results confirm the theoretical analysis. Experimentally obtained step heights up to 25 dB and widths of the bistability domain of 1-4 dB have been found

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Quantum Electronics, IEEE Journal of  (Volume:42 ,  Issue: 8 )