OE Letters

Crosstalk in rectangular cross-section heterogeneous multicore fiber

[+] Author Affiliations
Olga N. Egorova, Maxim S. Astapovich, Sergey L. Semjonov

Fiber Optics Research Center RAS, Vavilova 38, Moscow 119333, Russia

Opt. Eng. 55(9), 090507 (Sep 22, 2016). doi:10.1117/1.OE.55.9.090507
History: Received May 19, 2016; Accepted August 31, 2016
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Abstract.  Using neighboring cores with different mode propagation constants (indexes) is a well-known way to reduce crosstalk in multicore fiber (MCF). However, in actual field-deployed fiber, random bends can cause a reduction in the difference between the mode indexes of neighboring cores, which consequently increases crosstalk. The level of crosstalk induced by bending in both rectangular cross-section and circular cross-section heterogeneous MCF with cores arranged in a line was investigated. The experimental results obtained indicate that in contrast to circular cross-section MCF, no bending-induced crosstalk occurs in rectangular cross-section MCF wound on the mandrel without special control of cross-section orientation. Thus, to eliminate undesirable bending-induced crosstalk in heterogeneous MCF a rectangular cross-section should be employed.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Olga N. Egorova ; Maxim S. Astapovich and Sergey L. Semjonov
"Crosstalk in rectangular cross-section heterogeneous multicore fiber", Opt. Eng. 55(9), 090507 (Sep 22, 2016). ; http://dx.doi.org/10.1117/1.OE.55.9.090507


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