Za spajanje MCF-a nije potreban samo plutajući mehanizam, već i precizno poravnavanje kuta rotacije oko osi vlakna. Oldham spojnica je mehanizam koji zadovoljava ove kontradiktorne uvjete i dugo se koristi u području strojarstva. Funkcija ove spojke je točan prijenos kuta rotacije čak i ako se pojavi ekscentricitet osovine, ali obrnuto, ekscentricitet osovine se javlja čak i ako se ne okreće, pa je moguće ispuniti potrebne uvjete za MCF konektore.
The first practical optical connector for MCF was the MU-type MCF connector developed in Japan in 2012 (Figure 1). By applying Oldham's coupling mechanism, positioning accuracy, including rotation angle, is maintained. It has the property that the connection loss does not fluctuate even when a tensile load is applied to the cable. The SC-type MCF connector was developed in 2019 to achieve the same principle with a simplified structure (Figure 1). The practical application of optical connectors to optical communication networks using MCF is progressing.
