Modulation formats for multi-core fiber transmission
Artikel i vetenskaplig tidskrift, 2014

©2014 Optical Society of America We investigate high dimensional modulation formats for multi-core fibers (MCFs) and spatial superchannels. We show that the low skew variations between MCF cores maybe exploited to generate 'multi-core' formats that offer significant advantages over independently transmitting conventional 4-dimensional formats in each core. We describe how pulse position modulation formats may be transposed to the spatial domain and then investigate a family of modulation formats referred to as core-coding, one of which has the same power and spectral efficiency as polarization switched quaternary phase shift keying but with half of the optical power, potentially improving non-linear tolerance for long distance transmission, albeit at the cost of implementation challenges. Finally, we investigate the application of set-partitioning to multi-core formats using a single-parity check bit transmitted in one quadrature of one polarization in one of the cores and polarization-division multiplexing quadrature phase shift keying data in all remaining cores. We observe that for high core counts, an advantage of almost 3 dB in asymptotic power efficiency may be obtained with negligible impact on spectral efficiency, which translates into experimentally measured reduction in the required optical signal-to-noise ratio of up to 1.8 dB at a bit-error-rate of 10-5 and the same data-rate, and additional transmission reach of up to 20%.

Författare

Benjamin Puttnam

Research Organization of Information and Systems National Institute of Informatics

Tobias Eriksson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

J.M. Delgado Mendinueta

Research Organization of Information and Systems National Institute of Informatics

R. S. Luis

Research Organization of Information and Systems National Institute of Informatics

Y. Awaji

Research Organization of Information and Systems National Institute of Informatics

N. Wada

Research Organization of Information and Systems National Institute of Informatics

Magnus Karlsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Erik Agrell

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Optics Express

1094-4087 (ISSN)

Vol. 22 26 32457-32469

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1364/OE.22.032457