Impulse Response Measurement of Spooled and Twisted Few-Mode Multi-Core Fiber for Short-Range Optical Links

John van Weerdenburg (Corresponding author), Jose Manuel Delgado Mendinueta, Werner Klaus, Simon Rommel, Ruben Luis, Satoshi Shinada, Hideaki Furukawa, Idelfonso Tafur Monroy, Juan Jose Vegas Olmos, Ton Koonen, Chigo Okonkwo, Naoya Wada

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The impact of bending and twisting on the impulse response matrix is investigated using optical vector network analysis. The heterogeneous 36-core 3-mode fiber under test is spooled at bending radii of 8 cm to 50 cm and additionally up to 4 twists per meter along the longitudinal direction are applied. The by-design large differential mode group delay of the fiber enables comprehensive measurement of the inter-mode-group cross-talk of the fiber impulse response matrix, which is directly measured with an optical vector network analyzer. A maximal inter-mode-group cross-talk of-28.1 dB is observed over all 36 cores. Furthermore, no significant changes related to the bending radii or additional strain by twisting the fiber were detected. These results demonstrate that the transmission characteristics of few-mode fibers with large differential mode group delay are fairly unaffected by bend-and twist-related perturbations which may prove beneficial for short-range mode-group multiplexed transmission systems using partial multiple-input multiple-output equalization in conjunction with mode-selective multiplexers.

Originele taal-2Engels
Pagina's (van-tot)1427-1430
Aantal pagina's4
TijdschriftIEEE Photonics Technology Letters
Nummer van het tijdschrift22
StatusGepubliceerd - 15 nov. 2020


Manuscript received May 29, 2020; revised August 9, 2020; accepted September 23, 2020. Date of publication September 29, 2020; date of current version October 19, 2020. This work was supported in part by the Netherlands Organisation for Scientific Research (NWO) Graduate Photonics program under Agreement 022.005.011 and in part by the blueSPACE Project and the plaCMOS Project through the European Union’s Horizon 2020 Research and Innovation Programme under Agreement 762055 and Agreement 780997. (Corresponding author: John van Weerdenburg.) John van Weerdenburg, Simon Rommel, Idelfonso Tafur Monroy, Ton Koonen, and Chigo Okonkwo are with the Institute for Photonic Integration, Eindhoven University of Technology, 5600 Eindhoven, The Netherlands (e-mail: [email protected]).

Horizon 2020 Framework Programme762055, 780997
Nederlandse Organisatie voor Wetenschappelijk Onderzoek022.005.011


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      Tafur Monroy, I. (Project Manager), Rommel, S. (Projectmedewerker), Patterson, D. (Projectmedewerker), Cimoli, B. (Projectmedewerker), Witteveen, F. (Projectmedewerker), Sanders, R. (Project communicatie medewerker) & Barros Carvalho, J. (Projectmedewerker)


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