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A passive all-optical semiconductor device for level amplitude stabilization based on fast saturable absorber

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5 Author(s)
Nguyen, H.T. ; Laboratoire de Photonique et de Nanostructures, CNRS-LPN, 91460 Marcoussis, France ; Oudar, J.-L. ; Bouchoule, S. ; Aubin, G.
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A high-speed saturable-absorber-based device (response time below 2.5 ps) providing a significant amplitude stabilization is demonstrated. The experimental results allow estimating that the amplitude fluctuations of the output should be reduced by about 90% compared to the input fluctuations, within the input power range of (5–18 μJ/cm2). This device has been studied in view of its possible use for bit-1 noise reduction. When combined with a state-of-art saturable absorber device, this could provide a simple and compact scheme for the complete reamplification and reshaping regeneration of digital optical signals.

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Applied Physics Letters  (Volume:92 ,  Issue: 11 )