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High-quality optical pulse train generation at 80 Gb/s using a modified regenerative-type mode-locked fiber laser

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5 Author(s)
Guanghao Zhu ; Dept. of Phys., Univ. of Connecticut, Storrs, CT, USA ; Qiang Wang ; Hongmin Chen ; Hao Dong
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In this paper, we present an experimental demonstration of a high-quality optical pulse train generation at 80 Gb/s. The successful operation was achieved via two steps. In the first step, an ultrastable 2-ps (FWHM), 40-Gb/s pulse train was generated using the technique of fourth-order rational harmonic mode locking. The mode-locked laser was stabilized using a regenerative-type base-line extraction feedback technique. In the second step, an external fiber loop mirror consisting of several meters of polarization-maintaining fiber was used to double the repetition rate from 40 to 80 Gb/s. The output of the 80-Gb/s pulse train shows very small pulse-to-pulse amplitude fluctuation with good long-term stability.

Published in:

Quantum Electronics, IEEE Journal of  (Volume:40 ,  Issue: 6 )