R. J. Crisci's research while affiliated with Heriot-Watt University and other places

Publications (8)

Article
The design, construction, and operational testing of a five-stage, fully interconnected 32 × 16 switching fabric by the use of smart-pixel (2, 1, 1) switching nodes are described. The arrays of switching nodes use monolithically integrated GaAs field-effect transistors, multiple-quantum-well p-i-n detectors, and self-electro-optic-device modulators...
Article
We describe the design and demonstration of an extended generalized shuffle interconnection network, centrally controlled by a personal computer. A banyan interconnection pattern is implemented by use of computer-generated Fourier holograms and custom metallization at each 32 × 32 switching node array. Each array of electrically controlled tristate...
Article
A 5 stage, fully interconnected 32×16 switching network using smart pixel 2×1 switching nodes is demonstrated. The system was designed to operate with 150 Mbps data rates
Article
The cascaded, parallel operation of two 2-dimensional arrays of 2048 symmetric selfelectro-optic effect devices (S-SEEDs) is demonstrated. Bistable operation of both arrays and cascading of information from each array to the other are shown. The system is compact, tolerant to misalignment, stable and extensible.

Citations

... In actual multistage systems, larger "smart pixels" are operating with 100 fJ optical input energy at 155 Mb/s. A smart pixel array with 96 optical beams and 400 transistors was used in this system [28]. Such operating energies and speeds are of serious interest. ...
... We have developed an optical test system based on AT&T's System4 [4] which implements the daisy-chain channels described above. The optical system is modular in design so that we can replicate it to house several chips. ...
... Free-space optical approaches have been researched in various functioning systems and technologies. For example, a six-stage digital system with more than 65,000 light beams, using imaging interconnects between stages, has been successfully demonstrated [135], as have various other freespace optical systems and approaches [155], [156], [157], [158], [159], [160], [161]. ...
... It has been known since the 1980s that O-E-O integration could lead to functional pseudo-optical nonlinear devices that are capable of operating as wavelength converters, optical switches or optical transistors [9][10][11][12] . The nonlinearity can be enhanced by optoelectronic integration and this approach has the potential to solve some of the problems posed by all-optical devices, such as cascadability or signal amplification. ...