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Mode-locked hybrid soliton pulse source with extremely wide operating frequency range

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10 Author(s)
P. A. Morton ; AT&T Bell Labs., Murray Hill, NJ, USA ; V. Mizrahi ; P. A. Andrekson ; T. Tanbun-Ek
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The authors report a mode-locked pulse source with extremely wide operating frequency range and very stable operation, through the use of a long, linearly chirped Bragg reflector as the output coupler integrated in a fiber external cavity. A 1.55 mu m strained MQW laser diode is used, with one facet high reflectivity (HR) coated for improved cavity Q, and the other antireflection (AR) coated to allow coupling to the external cavity and suppress Fabry-Perot modes. Near-transform-limited pulses are obtained over a frequency range of 700 MHz around a system operating frequency of 2.488 GHz, with pulsewidths of 50 ps, as required for a practical soliton transmission system.<>

Published in:

IEEE Photonics Technology Letters  (Volume:5 ,  Issue: 1 )