Abstract

A time-varying phase shift associated with each phase matching point of homogeneous weakly coupled multicore fibers is proposed to describe the stochastic time evolution of the intercore crosstalk (ICXT) observed experimentally. This model for the stochastic ICXT time evolution represents a generalization of current ICXT theoretical models and potentiates the development of new time-adaptive ICXT mitigation techniques. The model is first proposed considering a single polarization scheme, and is then generalized to a dual polarization scheme and to account for the polarization coupling between cores. Comparison between spectrograms of the crosstalk transfer function (XTTF) amplitude evaluated using the single polarization model and measured experimentally shows excellent agreement for short (few minutes) decorrelation times. For large decorrelation times (above 1 h), some differences in the behavior of the time evolution of the XTTF amplitude are observed. Nevertheless, excellent match between the mean and variance of the XTTF amplitude evaluated from the model and from analytical expressions proposed in the literature is observed for short and large decorrelation times. It is also shown that the decorrelation time of the short-term average crosstalk remains unchanged when the dual polarization scheme is considered. Similar spectrograms of the XTTF obtained with the single and dual polarization ICXT models are also shown.

Characterization of the stochastic time evolution of short-term average intercore crosstalk in multicore fibers with multiple interfering cores

Tiago M. F. Alves and Adolfo V. T. Cartaxo
Opt. Express 26(4) 4605-4620 (2018)

Intercore crosstalk in direct-detection homogeneous multicore fiber systems impaired by laser phase noise

Tiago M. F. Alves, Adolfo V. T. Cartaxo, Ruben S. Luís, Benjamin J. Puttnam, Yoshinari Awaji, and Naoya Wada
Opt. Express 25(23) 29417-29431 (2017)

Performance of adaptive DD-OFDM multicore fiber links and its relation with intercore crosstalk

Tiago M. F. Alves, Ruben S. Luís, Benjamin J. Puttnam, Adolfo V. T. Cartaxo, Yoshinari Awaji, and Naoya Wada
Opt. Express 25(14) 16017-16027 (2017)

Physical interpretation of intercore crosstalk in multicore fiber: effects of macrobend, structure fluctuation, and microbend

Tetsuya Hayashi, Takashi Sasaki, Eisuke Sasaoka, Kunimasa Saitoh, and Masanori Koshiba
Opt. Express 21(5) 5401-5412 (2013)

Inter-core crosstalk in weakly coupled MCFs with arbitrary core layout and the effect of bending and twisting on the coupling coefficient

Ricardo O. J. Soeiro, Tiago M. F. Alves, and Adolfo V. T. Cartaxo
Opt. Express 27(1) 74-91 (2019)