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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 7 — Apr. 7, 2014
  • pp: 8798–8812

High-dimensional modulation for coherent optical communications systems

David S. Millar, Toshiaki Koike-Akino, Sercan Ö. Arık, Keisuke Kojima, Kieran Parsons, Tsuyoshi Yoshida, and Takashi Sugihara  »View Author Affiliations

Optics Express, Vol. 22, Issue 7, pp. 8798-8812 (2014)

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In this paper, we examine the performance of several modulation formats in more than four dimensions for coherent optical communications systems. We compare two high-dimensional modulation design methodologies based on spherical cutting of lattices and block coding of a ‘base constellation’ of binary phase shift keying (BPSK) on each dimension. The performances of modulation formats generated with these methodologies is analyzed in the asymptotic signal-to-noise ratio regime and for an additive white Gaussian noise (AWGN) channel. We then study the application of both types of high-dimensional modulation formats to standard single-mode fiber (SSMF) transmission systems. For modulation with spectral efficiencies comparable to dual-polarization (DP-) BPSK, polarization-switched quaternary phase shift keying (PS-QPSK) and DP-QPSK, we demonstrate SNR gains of up to 3 dB, 0.9 dB and 1 dB respectively, at a BER of 10−3.

© 2014 Optical Society of America

OCIS Codes
(060.4080) Fiber optics and optical communications : Modulation
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Optical Communications

Original Manuscript: February 20, 2014
Revised Manuscript: March 28, 2014
Manuscript Accepted: March 29, 2014
Published: April 4, 2014

David S. Millar, Toshiaki Koike-Akino, Sercan Ö. Arık, Keisuke Kojima, Kieran Parsons, Tsuyoshi Yoshida, and Takashi Sugihara, "High-dimensional modulation for coherent optical communications systems," Opt. Express 22, 8798-8812 (2014)

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