  Electro-optic modulators within Mach--Zehnder interferometers are a common
construction for optical switches in integrated photonics. A challenge faced
when operating at high switching speeds is that noise from the electronic drive
signals will effect switching performance. Inspired by the Mach--Zehnder
lattice switching devices of Van Campenhout et al. [Opt. Express, 17, 23793
(2009)] and techniques from the field of Nuclear Magnetic Resonance known as
composite pulses, we present switches which offer protection against
drive-noise in both the on and off state of the switch for both the phase and
intensity information encoded in the switched optical mode.
