Title :
Homodyne coherent detection of ASK and PSK signals performed by a subcarrier optical phase-locked loop
Author :
Camatel, Stefano ; Ferrero, Valter
Author_Institution :
Dipt. di Elettronica, Politecnico di Torino, Italy
Abstract :
Optical transmission systems based on homodyne coherent detection of two amplitude-shift keying (2-ASK) and pilot carrier two phase-shift keying (2-PSK) signals have been implemented. ASK data has been transmitted at 2.5 Gb/s, while 2.5- and 10-Gb/s PSK systems have been tested. The proposed architecture is based on a new optical phase-locked loop founded on subcarrier modulation and leads to new compact integrated receivers and new transmission formats, thus opening new opportunities for future optical systems.
Keywords :
amplitude shift keying; homodyne detection; optical fibre communication; optical modulation; optical phase locked loops; optical receivers; phase shift keying; 10 Gbit/s; 2.5 Gbit/s; PSK signals; amplitude-shift keying; coherent detection; homodyne detection; integrated receivers; optical phase-locked loop; optical systems; optical transmission systems; pilot carrier two phase-shift keying; subcarrier modulation; subcarrier optical phase-locked loop; transmission formats; Amplitude shift keying; Optical filters; Optical mixing; Optical modulation; Optical receivers; Optical sensors; Optical transmitters; Phase detection; Phase locked loops; Phase shift keying; Amplitude-shift keying (ASK); coherent detection; optical phase-locked loops; phase-shift keying (PSK);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.860377
