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Optical phase-locked loop for coherent detection optical receiver

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4 Author(s)
Camatel, S. ; Dipt. di Elettronica, Torino, Italy ; Ferrero, V. ; Gaudino, R. ; Poggiolini, P.

A novel subcarrier-based optical phase-locked loop (SC-OPLL®), with off-the-shelf optical components, is presented and demonstrated. The method, based on a continuous-wave laser and optical subcarrier modulation using a standard LiNbO3 Mach-Zehnder modulator, allows easier practical implementation than the previously proposed OPLL circuits based on laser direct modulation.

Published in:

Electronics Letters  (Volume:40 ,  Issue: 6 )