Abstract

We describe Mach–Zehnder-based silicon photonic switch fabrics monolithically integrated with a digital CMOS logic and driver circuitry. We review 2 × 2 Mach–Zehnder switches, 2 × 2 nested Mach–Zehnder switches, and strictly nonblocking 4 × 4 switch fabrics with nanosecond-scale, low-power, low-crosstalk, and low-insertion-loss performances. We also demonstrate fast dynamic reconfigurability on an 8 × 8 butterfly switch fabric. Technical challenges and future research directions of silicon photonic scaled switching systems are also discussed.

© 2016 IEEE

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