Simple analytical expression for crosstalk estimation in homogeneous trench-assisted multi-core fibers

Feihong Ye, Jiajing Tu, Kunimasa Saitoh, Toshio Morioka

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Abstract

An analytical expression for the mode coupling coe cient in homogeneous trench-assisted multi-core fibers is derived, which has a sim- ple relationship with the one in normal step-index structures. The amount of inter-core crosstalk reduction (in dB) with trench-assisted structures compared to the one with normal step-index structures can then be written by a simple expression. Comparison with numerical simulations confirms that the obtained analytical expression has very good accuracy for crosstalk estimation. The crosstalk properties in trench-assisted multi-core fibers, such as crosstalk dependence on core pitch and wavelength-dependent crosstalk, can be obtained by this simple analytical expression.
Original languageEnglish
JournalOptics Express
Number of pages12
ISSN1094-4087
DOIs
Publication statusPublished - 2014

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