Accession Number : ADD017596

Title :   Optical Logic Gates with High Extinction Ratio using Inverse Scattering Technique and Method using Same.

Descriptive Note : Patent, Filed 30 Jul 92, patented 9 May 95,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Tamil, Lakshman S ; Jordan, Arthur K

Report Date : 09 May 1995

Pagination or Media Count : 14

Abstract : Optical logic gates are designed using inverse-scatteflng 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 reflec tion 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 act the basic structure of the devices.

Descriptors :   *OPTICAL WAVEGUIDES, *LOGIC CIRCUITS, *PATENTS, EXTINCTION, OPTICAL PROPERTIES, RATIOS, CORES, THEORY, THIN FILMS, REFRACTIVE INDEX, GATES(CIRCUITS), WAVEGUIDES, REFLECTION, REGIONS, NONLINEAR SYSTEMS, PROFILES, COEFFICIENTS, YIELD, INVERSE SCATTERING, BOOLEAN ALGEBRA

Subject Categories : Electrical and Electronic Equipment
      Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE