Abstract
We propose a novel sub-ps optical switch composed of an interferometer
in which the phase difference between the arms is controlled by a pair of
electrooptic modulators (EOMs) driven by integrated nonlinear transmission
lines (NLTLs). As a proof-of-concept we demonstrate 70 ps switching using
discrete LiNbO$_3$ traveling wave EOMs and commercially available NLTLs capable of
delivering a 35 ps falling edge. This technique is simple and robust, and
can potentially be extended to sub-ps switching by integrating the NLTL into
the EOM waveguide. This fast switch can be used to implement an Optical Time
Division Multiplexing (OTDM) network architecture.
© 2011 IEEE
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