Optical phase-lock loop modeling for WDM system applications

M. S. Gonçalves, A. C. Bordonalli

DOI: 10.14209/its.2002.734

Evento: 2002 International Telecommunications Symposium (ITS2002)

Keywords: WDM coherent systems optical receivers

Abstract

"The transient characteristics of optical phase-lock loops intended for receiver applications in wavelength division multiplexing systems is theoretically analyzed in this work. As the locking bandwidth is controlled by a proper project of the feedback loop, a WDM carrier within the locking range can induce the locking of a slave semiconductor laser and be properly detected without the need for optical filters. The other carriers are discarded by the loop electronics bandwidth. The modeling takes into account the loop feedback effect over the slave laser rate equations, allowing the analysis of the temporal behavior of the locking process. The results show the dynamics of the loop acquisition, considering distinct values of initial frequency difference between carrier and slave laser and different loop filter configurations."

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