Ultra-Fast Adaptive Digital Polarization Control in a Realtime Coherent Polarization-Multiplexed QPSK Receiver

Timo Pfau,Christian Wördehoff,Ralf Peveling,Selwan K. Ibrahim,Sebastian Hoffmann,Olaf Adamczyk,Suhas Bhandare,Mario Porrmann,Reinhold Noe

Ultra-Fast Adaptive Digital Polarization Control in a Realtime Coherent Polarization-Multiplexed QPSK Receiver

2008

Timo Pfau
Christian Wördehoff
Ralf Peveling
Selwan K. Ibrahim
Sebastian Hoffmann
Olaf Adamczyk
Suhas Bhandare
Mario Porrmann
Reinhold Noe

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:

Optical communication
Digital control
Gigabit
Polarization (waves)
Phase-shift keying
Control system
Telecommunications
Multiplexing
Electronic engineering
Optics
Engineering
ultra fast

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