Open AccessGeneration and long-haul transmission of polarization-switched QPSK at 429 Gb/s
Author(s) -
David S. Millar,
Domaniç Lavery,
Sergejs Makovejs,
Carsten Behrens,
Benn C. Thomsen,
Polina Bayvel,
Seb J. Savory
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.009296
Subject(s) - phase shift keying , wavelength division multiplexing , optics , physics , polarization division multiplexing , channel spacing , bit error rate , transmission (telecommunications) , channel (broadcasting) , telecommunications , computer science , wavelength
We demonstrate, for the first time, the generation and transmission of polarization-switched QPSK (PS-QPSK) signals at 42.9 Gb/s. Long-haul transmission of PS-QPSK is experimentally investigated in a recirculating loop and compared with transmission of dual-polarization QPSK (DP-QPSK) at 42.9 Gb/s per channel. A reduction in the required OSNR of 0.7 dB was found at a BER of 3.8 x 10(-3), resulting in an increase in maximum reach of more than 30% for a WDM system operating on a 50 GHz frequency grid. The maximum reach of 13640 km for WDM PS-QPSK is, to the best of our knowledge, the longest distance reported for 40 Gb/s WDM transmission, over an uncompensated link, with standard fiber and amplification.