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Optical clock distribution using a mode-locked semiconductor laser diode system

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3 Author(s)
Delfyett, P.J. ; Bellcore, Red Bank, NJ, USA ; Hartman, D.H. ; Ahmad, S.Z.

An experiment in which a high-power mode-locked femtosecond semiconductor laser system was used as a source of extremely low jitter intense optical pulses in the distribution of a clock to 1024 ports via optical fibers is described. The total accumulated dynamic clock jitter between any two ports, which contains both correlated and uncorrelated sources, was measured to be less than 12 ps. This laser system produced a train of 460-fs optical pulses with over 70 W of peak power at 302 MHz. These results represent the largest fanout with the minimum timing jitter for an optically distributed clocking network

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Lightwave Technology, Journal of  (Volume:9 ,  Issue: 12 )