Title :
Frequency offset compensation loop for 16-QAM optical coherent systems
Author :
Chochol, Marcin ; Fabrega, Josep Maria
Author_Institution :
Centre Tecnol. de Telecomunicacions de Catalunya (CTTC), Castelldefels, Spain
Abstract :
A frequency control loop for 16-QAM (Quadrature Amplitude Modulation) optical coherent systems is proposed and demonstrated. An overall design of the control loop has been evaluated based on simulation results. The proposed frequency control loop enables to estimate, track and compensate frequency offset beyond ±5 GHz. Also, tracking and pull-in range for closed loop have been characterized.
Keywords :
closed loop systems; frequency control; optical communication; quadrature amplitude modulation; telecommunication control; 16-QAM optical coherent systems; closed loop control; frequency control loop; frequency offset compensation loop; quadrature amplitude modulation; Adaptive optics; Frequency control; Frequency modulation; Optical filters; Optical receivers; Optical sensors; Optical variables control; QAM modulation; coherent detection; frequency compensation; frequency control;
Conference_Titel :
Transparent Optical Networks (ICTON), 2011 13th International Conference on
Conference_Location :
Stockholm
Print_ISBN :
978-1-4577-0881-7
Electronic_ISBN :
2161-2056
DOI :
10.1109/ICTON.2011.5971019
