Alignment of Free-Space Coupling of Few-Mode Fibre to Multi-Mode Fibre using Digital Holography

Menno van den Hout; Sjoerd van der Heide; Thomas Bradley; Amado M. Velazquez-Benitez; Amado M. Velazquez-Benitez; Nicolas K. Fontaine; Roland Ryf; Haoshuo Chen; Mikael Mazur; Jose Enrique Antonio-López; Juan Carlos Alvarado-Zacarias; Rodrigo Amezcua-Correa; Marianne Bogot-Astruc; Adrian Amezcua Correa; Pierre Sillard; Chigo Okonkwo

European Conference on Optical Communication (ECOC) 2022
Technical Digest Series (Optica Publishing Group, 2022),
paper We5.5

Alignment of Free-Space Coupling of Few-Mode Fibre to Multi-Mode Fibre using Digital Holography

Menno van den Hout, Sjoerd van der Heide, Thomas Bradley, Amado M. Velazquez-Benitez, Nicolas K. Fontaine, Roland Ryf, Haoshuo Chen, Mikael Mazur, Jose Enrique Antonio-López, Juan Carlos Alvarado-Zacarias, Rodrigo Amezcua-Correa, Marianne Bogot-Astruc, Adrian Amezcua Correa, Pierre Sillard, and Chigo Okonkwo

European Conference and Exhibition on Optical Communication 2022

Basel Switzerland
18–22 September 2022
ISBN: 978-1-957171-15-9

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Joint Poster Session II (We5)

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M. van den Hout, S. van der Heide, T. Bradley, A. M. Velazquez-Benitez, N. K. Fontaine, R. Ryf, H. Chen, M. Mazur, J. E. Antonio-López, J. C. Alvarado-Zacarias, R. Amezcua-Correa, M. Bogot-Astruc, A. A. Correa, P. Sillard, and C. Okonkwo, "Alignment of Free-Space Coupling of Few-Mode Fibre to Multi-Mode Fibre using Digital Holography," in European Conference on Optical Communication (ECOC) 2022, J. Leuthold, C. Harder, B. Offrein, and H. Limberger, eds., Technical Digest Series (Optica Publishing Group, 2022), paper We5.5.

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Abstract

Off-axis digital holography is used to align a few-mode fiber to a multi-mode fiber in a free-space optical setup. Alignment based on power coupling measurements alone cannot guarantee low mode-dependent loss. The proposed alignment method enables reliable fiber coupling with low mode-dependent loss and crosstalk.

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