Title :
High sensitivity 636 Mb/s polarization diversity SF-FSK system for field use
Author :
Bødtker, E. ; Dickow, H. ; Hoffmann, B. ; Jacobsen, G. ; Jensen, N.G. ; Jensen, T. ; Madsen, J.S. ; Madsen, P.W. ; Nielsen, S.K. ; Olsen, H.J. ; Skipper, B.F. ; Sørensen, S. ; Thorsen, P.
Author_Institution :
Telecommun. Res. Lab., Horsholm, Denmark
Abstract :
A 636 Mb/s coherent polarization diversity SF-FSK (frequency shift keying) system for field use is presented. The system features a high performance AMI (alternate mark inversion) coder in the transmitter, a polarization-diversity optical unit for balanced detection with less than 1.0 dB loss and 17 dB extinction ratio, a phase noise robust receiver front-end designed in microstrip technology with 2.4 GHz bandwidth and a record low noise spectral density of below 4 pA/√Hz, as well as a nearly ideal square law detector (based on a monolithic integrated mixer) which has 35 dB dynamic range. The system has a sensitivity of -44.7 dBm, (223-1 PRBS) and a maximum penalty due to polarization fluctuations of 1.0 dB. The system is now ready for a field trial
Keywords :
frequency shift keying; light polarisation; optical communication equipment; optical links; receivers; transmitters; 2.4 GHz; 636 Mbit/s; AMI coder; alternate mark inversion; balanced detection; extinction ratio; frequency shift keying; low noise spectral density; microstrip technology; monolithic integrated mixer; nearly ideal square law detector; phase noise robust receiver front-end; polarization diversity SF-FSK system; polarization fluctuations; polarization-diversity optical unit; Ambient intelligence; Frequency shift keying; Integrated optics; Optical noise; Optical polarization; Optical receivers; Optical transmitters; Performance loss; Phase detection; Phase noise;
Conference_Titel :
Communications, 1991. ICC '91, Conference Record. IEEE International Conference on
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-0006-8
DOI :
10.1109/ICC.1991.162383
