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All-optical clock recovery module based on self-pulsating DFB laser



Electronics Letters 34 (1998), No.17, pp.1664-5
ISSN: 0013-5194
Journal Article
Fraunhofer HHI ()
clocks; digital communication; distributed feedback lasers; laser beam applications; laser tuning; optical communication equipment; semiconductor lasers; timing; waveguide lasers; all-optical clock recovery module; self-pulsating dfb laser; transmission experiment; penalty free function; optical clock; continuous frequency tuning; bit rate flexible clock recovery; 10 Gbit/s; 105 km; 1540 to 1560 nm; 5 to 22 GHz

An all-optical clock recovery module is developed and tested in a 100 Gbit/s 105 km transmission experiment. A penalty free function of the optical clock relative to an electronic phase-locked loop is demonstrated. The compact module is wavelength and polarisation insensitive and requires no electrical radiofrequency equipment. Continuous frequency tuning from 5 to 22 GHz indicates the potential for bit rate flexible clock recovery.