Ultrafast all-optical clock recovery based on phase-only linear optical filtering

We report on a novel, efficient technique for all-optical clock recovery from RZ-OOK data signals based on spectral phase-only (all-pass) optical filtering. This technique significantly enhances both the recovered optical clock quality and energy efficiency in comparison with conventional amplitude...

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Bibliographic Details
Published in:Optics letters 2014-05, Vol.39 (9), p.2815-2818
Main Authors: Maram, Reza, Kong, Deming, Galili, Michael, Oxenløwe, Leif Katsuo, Azaña, José
Format: Article
Language:English
Subjects:
Amplitudes
Clock recovery
Clocks
Energy use
Fabry-Perot
Filtering
Filtration
Recovery
Spectra
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Summary:We report on a novel, efficient technique for all-optical clock recovery from RZ-OOK data signals based on spectral phase-only (all-pass) optical filtering. This technique significantly enhances both the recovered optical clock quality and energy efficiency in comparison with conventional amplitude optical filtering approaches using a Fabry-Perot filter. The proposed concept is validated through recovery of the optical clock from a 640 Gbit/s RZ-OOK data signal using a commercial linear optical waveshaper.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.39.002815