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Journal of applied research and technology
versión On-line ISSN 2448-6736versión impresa ISSN 1665-6423
Resumen
ARVIZU-MONDRAGON, A. et al. Optical Communication Receiver Based on a Switched-Quadrature Costas Loop. J. appl. res. technol [online]. 2011, vol.9, n.3, pp.443-455. ISSN 2448-6736.
In this paper we present the development and implementation of a switched-quadrature optical Costas loop receiver and its performance evaluation by means of simulations and with the experimental work of an optical set up and electronic circuitry. We report as well the implementation of some of the basic building blocks that are required by both homodyne and heterodyne receivers for coherent optical communication systems (guided and unguided, i.e., optical fiber and free space optics): we present an automatic wavelength controller (AWC), an electronically-driven state of polarization controller (ASOPC) as well as an optical phase locked loop (OPLL) for phase tracking.
Palabras llave : phase tracking; switched-quadratures; optical Costas loop; optical phase locked loop; optical wavelength controller; state of polarization controller.