Experimental Evaluation of a (4x4) Multi-Mode MIMO System Utilizing Customized Optical Fusion Couplers

Konferenz: Photonische Netze - 17. ITG-Fachtagung
12.05.2016 - 13.05.2016 in Leipzig, Deutschland

Tagungsband: ITG-Fb. 264: Photonische Netze

Seiten: 5Sprache: EnglischTyp: PDF

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Sandmann, Andre; Ahrens, Andreas; Lochmann, Steffen (Hochschule Wismar, University of Applied Sciences: Technology, Business and Design, Philipp-Müller-Str. 14, 23966 Wismar, Germany)

In this contribution an optical (4x4) multi-mode MIMO (multiple-input multiple-output) system using two (2x4) fusion star couplers for mode multiplexing and demultiplexing and transmitting over 2 km OM4 multi-mode fiber (MMF) is constructed. The characterization of this MIMO system is performed by measuring the 16 specific channel impulse responses at an operating wavelength of 1326 nm. Furthermore, the measured spatial power distribution shows the spatial diversity of the different excited mode groups. Based on the receive signal energy of the individual single-input single-output (SISO) channels the port configuration of the underlyingMIMO system has been established. Finally, the bit error rate (BER) performance is evaluated and compared to lower order MIMO systems while using the same physical setup. The results show that the fusion star couplers are well-suited for the task of mode multiplexing.