Numerical modeling of the multicore fiber amplifier

A. P. Napartovich; N. N. Elkin; V. N. Troshchieva; D. V. Vysotsky

doi:10.1117/12.738877

8 May 2007 Numerical modeling of the multicore fiber amplifier

A. P. Napartovich, N. N. Elkin, V. N. Troshchieva, D. V. Vysotsky

Proceedings Volume 6346, XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; 634623 (2007) https://doi.org/10.1117/12.738877
Event: XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2006, Gmunden, Austria

Abstract

We have developed a 3D beam propagation numerical code and applied it to simulations of 7(19)-core of hexagonal structure fiber amplifier experimentally studied recently. It was shown that the mechanism of phase synchronization of co-propagating beams is associated with mode filtering by gain spatial structure. The tolerance limits on micro-core parameter random variations for phase-locking taking place are numerically found for 7-core fiber amplifier with different random core index sets. It is shown that the smaller core index step stabilizes the phase locking effect. An original optical mode solver was developed. Spectra of modes and of their gain are studied for 7(19)-core fibers. Gain self- and cross-saturation effects are examined, and possibilities of core structure tailoring in order to increase singlemode stability are described.

Citation Download Citation

A. P. Napartovich, N. N. Elkin, V. N. Troshchieva, and D. V. Vysotsky "Numerical modeling of the multicore fiber amplifier", Proc. SPIE 6346, XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 634623 (8 May 2007); https://doi.org/10.1117/12.738877

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