Proposals in the literature for the development of devices based on ultrafast, nonresonant nonlinearities have concentrated on demonstrating the existence and measuring the size and speed of the physical phenomenon. However, even when an interaction between light pulses can be described in terms of a logic operation, a viable device will not result unless it can be made robust in the system sense. It is necessary to show, for example, that requirements for fanin and fanout, extinction, geometrical and power tolerances, and immunity from thermal effects and linear interference can be satisfied. These and other fundamental device design issues are discussed here for general travelling-wave structures which will be required in systems designed to exploit the speed of nonresonant optical nonlinearities.
M. C. Gabriel, M. C. Gabriel,
"Transparent Nonlinear Optical Devices", Proc. SPIE 0836, Optoelectronic Materials, Devices, Packaging, and Interconnects, (1 January 1987); doi: 10.1117/12.967532; https://doi.org/10.1117/12.967532