Title :
Phase noise cancellation in coherent optical receivers by digital coherence enhancement
Author :
Secondini, M. ; Meloni, G. ; Foggi, T. ; Colavolpe, G. ; Poti, L. ; Forestieri, E.
Author_Institution :
Scuola Superiore Sant´´Anna, Pisa, Italy
Abstract :
A novel technique to cancel laser phase noise in coherent receivers is proposed. The equivalent laser linewidth is reduced by a factor of 10, and coherent detection of DQPSK signals affected by strong phase noise is experimentally demonstrated.
Keywords :
differential phase shift keying; interference suppression; optical receivers; phase noise; quadrature phase shift keying; DQPSK signal; coherent detection; coherent optical receiver; digital coherence enhancement; equivalent laser linewidth; laser phase noise; phase noise cancellation; Adaptive optics; Optical interferometry; Optical noise; Optical polarization; Optical receivers; Optical sensors; Phase noise;
Conference_Titel :
Optical Communication (ECOC), 2010 36th European Conference and Exhibition on
Conference_Location :
Torino
Print_ISBN :
978-1-4244-8536-9
Electronic_ISBN :
978-1-4244-8534-5
DOI :
10.1109/ECOC.2010.5621325
