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Long-period grating based single-mode fiber to multi-core fiber pump coupler

Sousa, L. M. ; Facão, M. ; Fernandes, G. ; Nogueira, R.N. ; Rocha, Ana M.

Long-period grating based single-mode fiber to multi-core fiber pump coupler, Proc OSA Frontiers in Optics, Conference Online, Vol. , pp. FTh2E.3 - , September, 2020.

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Abstract
We theoretically demonstrate a long-period grating (LPG) based single-mode fiber to multi-core fiber coupler. The coupling efficiency achieved was 24% of the input power, evenly distributed by all cores, using LPGs of length 4 cm.