Comparison of 128-SP-QAM and PM-16QAM in long-haul WDM transmission
Journal article, 2013

We investigate 128-level set-partitioning quadrature amplitude modulation (128-SP-QAM) experimentally and compare the performance to polarization-multiplexed 16QAM both at the same bit rate and at the same symbol rate. Using a recirculating loop we study both single channel and wavelength-division multiplexing (WDM) transmission and demonstrate a reach of up to 2680 km at a bit-error rate of 10−3 for 128-SP-QAM. We confirm that 128-SP-QAM has an increased sensitivity compared to PM-16QAM and show that the maximum transmission distance can be increased by more than 50 % at the same bit rate for both single channel and WDM transmission. We also investigate the performance at the same symbol rate as a possible fall back solution in a degrading link.

modulation

Coherent communications

long haul transmission

WDM

16-QAM

fiber optical communication

modulation format

128-SP-QAM

power efficiency

Author

Tobias Eriksson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Martin E Sjödin

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Pontus Johannisson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Peter Andrekson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Magnus Karlsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Optics Express

1094-4087 (ISSN)

Vol. 21 16 19269-19279

Areas of Advance

Information and Communication Technology

Subject Categories

Telecommunications

Communication Systems

Signal Processing

DOI

10.1364/OE.21.019269

More information

Created

10/6/2017