Abstract
A monolithic InGaAsP/InP 4 x 4 cross-connect is designed, fabricated and
demonstrated. Each of the four inputs fan out to two stages of semiconductor optical
amplifier-based gates to perform broadband-input-selection and
wavelength-specific-selection. Stages of parallel cyclic arrayed waveguide grating
routers and wavelength-agnostic fan-ins allow independent electronically controlled
routing of four unique wavelength channels between the four inputs and outputs. The
circuit is realized within a 15 mm<sup>2</sup> area on a multi-project wafer.Circuit
performance is evaluated by resolving optical power loss within the circuit to show
component level performance at and close to design specification. Data routing
experiments for wavelength multiplexed signals are performed and quantified in terms of
optical power penalty. Multi-path routing is performed with both co- and
counter-propagating data. Bi-directional and fast reconfigurable routing is similarly
quantified. Low power penalty of less than 1 dB is measured for the simultaneous routing
of data over multiple circuit paths.
© 2012 IEEE
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