Abstract
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
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