Title :
Ultra-Fast Adaptive Digital Polarization Control in a Realtime Coherent Polarization-Multiplexed QPSK Receiver
Author :
Pfau, Timo ; Wordehoff, C. ; Peveling, R. ; Ibrahim, Selwan K. ; Hoffmann, S. ; Adamczyk, O. ; Bhandare, S. ; Porrmann, Mario ; Noe, Reinhold
Author_Institution :
Univ. of Paderborn, Paderborn, Germany
Abstract :
A digital polarization control system integrated in a 2.8 Gbit/s realtime polarization-multiplexed coherent QPSK system compensates for endless polarization changes having a maximum gradient of 3.5 krad/s (12 krad/s) with 1 dB (3.9 dB) loss in receiver sensitivity.
Keywords :
compensation; digital control; high-speed optical techniques; multiplexing; optical control; optical fibre communication; optical fibre polarisation; optical modulation; optical receivers; quadrature phase shift keying; telecommunication control; QPSK receiver sensitivity; bit rate 2.8 Gbit/s; digital polarization control system; endless polarization change; realtime coherent polarization-multiplexing; ultra-fast adaptive digital polarization control; Adaptive control; Control systems; Digital control; Optical fiber communication; Optical fiber polarization; Optical polarization; Optical receivers; Optical retarders; Programmable control; Quadrature phase shift keying;
Conference_Titel :
Optical Fiber communication/National Fiber Optic Engineers Conference, 2008. OFC/NFOEC 2008. Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-55752-856-8
DOI :
10.1109/OFC.2008.4528638
