Optical logic gates with high extinction ratio using inverse sca

Details Optical logic gates with high extinction ratio using inverse sca Optical logic gates with high extinction ratio using inverse sca

1992-07-30

1995-05-09

Healy, Brian

Optical waveguides

Having nonlinear property

385 16, 385 28, 385 40, 385 45, 385 14, 385130, 385131, 385132, 364712, 364713, 359107, 359108, G02B 612, G02B 626, G06E 104

Patent

active

054147891

ABSTRACT:
Optical logic gates are designed using inverse-scattering theory, resulting in devices which are intrinsic and passive, having high extinction ratios and large fan out. The Boolean operation is modeled by a pair of reflection coefficients, corresponding to the `1` and `0` states of the device. When inverse scattering theory is applied, each reflection coefficient yields a unique refractive index profile. The multivalued nature of the refractive index profile is achieved by introducing nonlinearity in the core region of a thin-film waveguide, which acts as the basic structure of the devices.

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Tamil, Lakshman S., et al., "An Inverse-Scattering Model for an All-Optical Logic Gate," J. Appl. Phys., 70(3):1882-1884, Aug. 1, 1991.

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