Saturable-Absorber-Based Phase-Preserving Amplitude Regeneration of RZ DPSK Signals

Quang Trung Le (1) , Laurent Bramerie (1) , Hoang Trung Nguyen (2) , Mathilde Gay (1) , Sebastien Lobo (1) , Michel Joindot (1) , Jean-Louis Oudar (2) , Jean-Claude Simon (1)

1 FOTON - Fonctions Optiques pour les Technologies de l'informatiON
2 LPN - Laboratoire de photonique et de nanostructures

We experimentally investigate a new generation of multiple-quantum-well semiconductor saturable absorber for all-optical phase-shift-keying signal regeneration. The device under study exhibits a reflectivity which decreases when the input signal power increases. This characteristic can be seen as a power limiting function which could be used for phase-preserving amplitude noise reduction, hence preventing from nonlinear phase noise accumulation along a transmission link. The device efficiency is demonstrated at 42.7 Gb/s; a fiber launched power margin of 2 dB and receiver sensitivity improvement up to 5.5 dB are obtained.

Domaines: Optique / photonique

Quang Trung Le, Laurent Bramerie, Hoang Trung Nguyen, Mathilde Gay, Sebastien Lobo, et al.. Saturable-Absorber-Based Phase-Preserving Amplitude Regeneration of RZ DPSK Signals. IEEE Photonics Technology Letters, 2010, 22 (12), pp.887-889. ⟨10.1109/LPT.2010.2047103⟩. ⟨hal-00489078⟩