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Generating 4 \times 20 GHz and 4 \times 40 GHz Pulse Trains From a Single 10-GHz Mode-Locked Laser Using a Tunable Planar Lightwave Circuit

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7 Author(s)
Payman Samadi ; Department of Electrical and Computer Engineering, McGill University, Centre d'optique, photonique et laser (COPL)., Montreal, Canada ; Lawrence R. Chen ; Irina A. Kostko ; Patrick Dumais
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We demonstrate a tunable pulse repetition rate multiplier using a silica-based planar lightwave circuit (PLC). The PLC is a six-stage lattice-form Mach-Zehnder interferometer which can be tuned thermally to generate 20- and 40-GHz output pulse trains from a 10-GHz input. We use a nonlinear optical loop mirror as a wavelength converter to perform intensity-to-field conversion to eliminate pulse-to-pulse phase fluctuations in the higher-rate output pulse trains. Moreover, we use wavelength multicasting (simultaneous wavelength conversion) to generate multiple pulse trains (4 ?? 20 GHz and 4 ?? 40 GHz in the example shown here) from a single 10-GHz input.

Published in:

IEEE Photonics Technology Letters  (Volume:22 ,  Issue: 5 )