Robustness to mechanical perturbations of centre-launching technique in multi-mode fibres for transparent optical interconnects

In this paper we exploit the centre-launching technique to allow single-mode propagation in multi-mode fibres and to guarantee full transparency to the transmitted optical signal for applications in board-to-board and data server interconnects. We show that this technique is robust to mechanical perturbations up to about 1 kHz, demonstrating that vibrations do not affect the transmission performances. Different experimental configurations are tested in order to confirm that only the fundamental mode propagates, without excitation of higher-order modes.