9 November 1993 Designing fast optically controlled waveguide switches
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Optically controlled two way switches are useful for constructing interconnection networks and for performing optical logic for parallel computing. A switch is constructed by placing two waveguides parallel and sufficiently close to each other that their fields couple transversely. The supermodes for this configuration are even and odd and travel at different phase velocities so that the output switches from one waveguide to the other repetitively with distance. The output can also be switched from one waveguide to the other by altering the optical length of the waveguide. Nonlinear materials are incorporated in the waveguide so that the optical path length may be altered by using an optical control beam to vary the intensity of light. A finite element method is described that enables the modeling of the nonlinear dual waveguide structure. Nonlinearity is handled by iteration and assuming an equivalent nonlinear relative permittivity.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alastair D. McAulay, Xin Xu, Junqing Wang, "Designing fast optically controlled waveguide switches", Proc. SPIE 2026, Photonics for Processors, Neural Networks, and Memories, (9 November 1993); doi: 10.1117/12.163579; https://doi.org/10.1117/12.163579




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