Field-Trial of an All-Optical PSK Regenerator/Multicaster in a 40 Gbit/s, 38 Channel DWDM Transmission Experiment

• Published in: Journal of lightwave technology Vol. 30; no. 4; pp. 512 - 520
• Main Authors: Slavik, R., Bogris, A., Kakande, J., Parmigiani, F., Gruner-Nielsen, L., Phelan, R., Vojtech, J., Petropoulos, P., Syvridis, D., Richardson, D. J.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 15.02.2012; Institute of Electrical and Electronics Engineers
• Subjects: All optical circuits; Applied sciences; Bit error rate; Circuit properties; Differential phase shift keying; Dispersion; Electric, optical and optoelectronic circuits; Electronics; Exact sciences and technology; Fiber optics; four-wave mixing; Information, signal and communications theory; Modulation, demodulation; Multiplexing; optical amplifiers; Optical and optoelectronic circuits; optical signal processing; Optical wavelength conversion; Phase noise; phase shift keying; Receivers; Signal and communications theory; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); Performance evaluation; Integrated optics; Frequency conversion; Data broadcast; Information dissemination; Implementation; Four wave mixing; Fiber optics; Multicast; Phase coding; Signal transmission; Optical fiber communication; Optical bus; four-wave mixing; Optical fiber; High rate transmission; Optical links; Wavelength division multiplexing; Receiver; All optical circuit; Phase shift keying; Regenerator; One way; Optical amplifier; optical amplifiers; Long distance transmission; optical signal processing; Pressure sensitive adhesive
• ISSN: 0733-8724; 1558-2213
• DOI: 10.1109/JLT.2011.2174197

The performance of future ultra-long haul communication systems exploiting phase-encoded signals is likely to be compromised by noise generated during signal transmission. One potential way to mitigate such noise is to use Phase Sensitive Amplifiers (PSAs) which have been demonstrated to help remove phase as well as amplitude noise from phase-encoded signals. Recently, we showed that a PSA-based signal regenerator based on degenerate four-wave mixing can be implemented in a network-compatible manner in which only the (noisy) signal is present at the device input (black-box operation). The developed regenerator was also able to perform simultaneous wavelength conversion and multicasting, details/analysis of which are presented herein. However, this scheme was tested only with artificial noise generated in the laboratory and with the regenerator placed in front of the receiver, rather than in-line where even greater performance benefits are to be expected. Here, we address both theoretically and experimentally the important issue of how such a regenerator, operating for convenience in a multicasting mode, performs as an in-line device in an installed transmission fiber link. We also investigate the dispersion tolerance of the approach.