Related Experiment Video
Updated: May 27, 2026

Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
Comparison of 8 × 112 Gb/s PS-QPSK and PDM-QPSK signals over transoceanic distances
Markus Nölle1, Johannes Karl Fischer, Lutz Molle
1Dept. Photonic Networks and Systems, Fraunhofer Institute for Telecommunications Heinrich Hertz Institute, Einsteinufer 37, 10587 Berlin, Germany. markus.noelle@hhi.fraunhofer.de
Abstract:
We experimentally investigate polarization-switched quadrature phase-shift keying (PS-QPSK) with a symbol rate of 37.3 GBd corresponding to a bit rate of 112 Gb/s. In a wavelength-division multiplexing (WDM) experiment with 50 GHz channel spacing, the transmission performance of PS-QPSK is compared to that of polarization-division multiplexed QPSK (PDM-QPSK) over an EDFA amplified ultra-large-effective-area fiber link. For a bit-error ratio (BER) of 3.8 × 10(-3), the achieved transmission distance is 11000 km for PS-QSPK and 10000 km for PDM-QPSK.
Related Concept Videos
Frequency-Domain Interpretation of PD Control
The proportional control gain, combined with the system's...
Propagation Speed of Electromagnetic Waves
Electronic Distance Measuring Instruments
Speed of a Transverse Wave
One of the key properties of any wave is the wave speed. Light...
