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All-optical timing extraction from a coded line signal with division of the extracted clock frequency is demonstrated using a single twin-section self-pulsating laser diode. Either the bit-rate clock or a submultiple of the bit-rate clock can be extracted, depending only on the dc biases applied to the self-pulsating laser diode. Timing extraction is carried out for the first time without optical injection locking of the self-pulsating laser diode by the optical data source.
Farrell, G., Phelan., P., Hegarty, J., Shields, J. (1993). All optical timing extraction with frequency division using a twin section laser diode. Photonics Technology Letters, 1993, Vol. 5, no.6, pp.718-721. doi:10.1109/68.219722