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Complete optical sampling system with broad gap-free spectral range for 160 Gbit/s and 320 Gbit/s and its application in a transmission system

: Schmidt, C.; Futami, F.; Watanabe, S.; Yamamoto, T.; Schubert, C.; Berger, J.; Kroh, M.; Ehrke, H.-J.; Dietrich, E.; Börner, C.; Ludwig, R.; Weber, H.G.

Sorin, W.V.:
OFC 2002, Optical Fiber Communication Conference and Exhibit. Technical digest : March 17 - 22, 2002, Anaheim
Washington, DC: OSA, 2002 (Trends in optics and photonics series 70)
ISBN: 1-55752-701-6
Optical Fiber Communication Conference <2002, Anaheim>
Fraunhofer HHI ()

A complete all-optical sampling system for eye diagram monitoring at 160 Gbit/s was demonstrated. The system comprised of an all-optical clock recovery based on optical phase locked loop. The sampling pulses were generated by mode-locked semiconductor laser. A gap-free continuous operation regime of at least 18 nm was achieved. Due to the use of the clock recovery, 160 Gbit/s eye monitoring after a transmission link became possible with large persistence times, which made the sytem applicable for field experiments.