Stokes Space-Based Optical Modulation Format Recognition for Digital Coherent Receivers

Author

Borkowski, Robert ; Zibar, D. ; Caballero, Antonio ; Arlunno, Valeria ; Monroy, I.T.

Author_Institution

Dept. of Photonics Eng., Tech. Univ. of Denmark, Lyngby, Denmark

Volume

25

Issue

21

fYear

2013

fDate

Nov.1, 2013

Firstpage

2129

Lastpage

2132

Abstract

We present a technique for modulation format recognition for heterogeneous reconfigurable optical networks. The method is based on Stokes space signal representation and uses a variational Bayesian expectation maximization machine learning algorithm. Differentiation between diverse common coherent modulation formats is successfully demonstrated numerically and experimentally. The proposed method does not require training or a constellation diagram to operate, is insensitive to polarization mixing or frequency offset and can be implemented in any receiver capable of measuring Stokes parameters.

Keywords

Bayes methods; expectation-maximisation algorithm; optical fibre networks; optical modulation; optical receivers; variational techniques; Stokes space signal representation; digital coherent receivers; diverse common coherent modulation formats; frequency offset; heterogeneous reconfigurable optical networks; optical modulation format recognition; polarization mixing; variational Bayesian expectation maximization machine learning algorithm; Digital signal processing; Optical attenuators; Optical modulation; Optical receivers; Phase shift keying; Coherent detection; Gaussian mixture models (GMM); Stokes space; modulation format detection (MFD); modulation format identification (MFI); modulation format recognition (MFR); poincaré sphere; polarization multiplexing; variational Bayesian expectation maximization (VBEM);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2013.2282303

Filename

6601667