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Chirp Reduction in Directly Modulated Multi-Electrode RSOA Devices in Passive Optical Networks

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8 Author(s)
de Valicourt, G. ; III-V Labs., Alcatel-Thales, Palaiseau, France ; Pommereau, F. ; Poingt, F. ; Lamponi, M.
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We demonstrate that the use of an optimized bi-electrode reflective semiconductor optical amplifier as remote modulator reduces the chirp. Our simulation shows that the chirp reduction is due to the carrier density profile in multi-electrode reflective semiconductor optical amplifiers. As a result of the chirp reduction, penalties for transmission are reduced from 6 to 4.5 dB on standard fiber at 2.5 Gb/s over 50 km. Using tri-electrode devices, a penalty of 3 dB is obtained for the same transmission conditions.

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Photonics Technology Letters, IEEE  (Volume:22 ,  Issue: 19 )