A full multicore fiber optic link is demonstrated, transmitting greater than 100 Gb/s through a single strand of multimode fiber for the first time. The fiber, which consists of seven graded-index multimode cores, is used to transmit up to 120 Gb/s over 100 m using a custom multicore-fiber interfacing transmitter and receiver. 2-D arrays of vertical-cavity surface-emitting lasers (VCSELs) and vertically illuminated photodiodes (PDs) are fabricated with a geometry corresponding to the outer six cores of the seven-core fiber, which is arranged in a hexagonal pattern. Both flip-chip and wire-bonding technologies are used to package the VCSEL and PD chips with multichannel transmitter and receiver integrated circuits. Amplitude and timing margins of the end-to-end signals are analyzed through bit-error-rate (BER) measurements. The effects of electrical and optical crosstalk are shown to result in negligible degradation to the BER performance.
© 2012 IEEE
Benjamin G. Lee, Daniel M. Kuchta, Fuad E. Doany, Clint L. Schow, Petar Pepeljugoski, Christian Baks, Thierry F. Taunay, Benyuan Zhu, Man F. Yan, George E. Oulundsen, Durgesh S. Vaidya, Wenlin Luo, and Neinyi Li, "End-to-End Multicore Multimode Fiber Optic Link Operating up to 120 Gb/s," J. Lightwave Technol. 30, 886-892 (2012)