All-fiber 6-mode multiplexers based on fiber mode selective couplers

All-fiber 6-mode multiplexer composed of two consecutive LP -mode selective couplers (MSC), two LP -MSCs and an LP -MSC is fully characterized by wavelength-swept interferometer technique. The MSCs are fabricated by polished-type fiber couplers coupling LP mode of a single mode fiber into a higher-o...

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Bibliographic Details
Published in:Optics express 2017-03, Vol.25 (5), p.5734-5741
Main Authors: Chang, Sun Hyok, Moon, Sang-Rok, Chen, Haoshuo, Ryf, Roland, Fontaine, Nicolas K, Park, Kyung Jun, Kim, Kwangjoon, Lee, Joon Ki
Format: Article
Language:English
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Summary:All-fiber 6-mode multiplexer composed of two consecutive LP -mode selective couplers (MSC), two LP -MSCs and an LP -MSC is fully characterized by wavelength-swept interferometer technique. The MSCs are fabricated by polished-type fiber couplers coupling LP mode of a single mode fiber into a higher-order mode of a few mode fiber. A pair of the mode multiplexers has minimum mode dependent loss of 4 dB and high mode group selectivity of over 15 dB. Mode division multiplexed transmission enabled by the all-fiber mode multiplexers is demonstrated over fiber spans of 117 km employing an in-line multi-mode optical amplifier. 6 modes of 120 Gb/s dual polarization quadrature phase shift keying signals combined with 30 wavelength channels are successfully transmitted.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.25.005734