Optical waveguides – Planar optical waveguide
Reexamination Certificate
2011-04-26
2011-04-26
Lepisto, Ryan (Department: 2883)
Optical waveguides
Planar optical waveguide
C385S002000, C385S008000, C385S009000, C385S130000, C385S131000, C385S132000, C385S142000, C385S144000
Reexamination Certificate
active
07933483
ABSTRACT:
An electro-optical memory cell having a non-volatile programmable refractive index and a method of making. The memory cell includes: a waveguiding structure having a transition metal oxide with oxygen vacancies; a plurality of electrodes for applying an electrical field; and an optical detector for detecting a state of the memory cell. The method includes: fabricating a waveguiding structure having a transition metal oxide with oxygen vacancies; positioning a plurality of electrodes for application of an electric field; arranging the transition metal oxide and the electrodes such that when an electric field is applied, the oxygen vacancies migrate in a direction that has a component which is radial relative to a center of the beam path; applying the electric field thereby programming the refractive index to set a state of the memory cell; and detecting the state of the memory cell using an optical detector.
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Meijer Gerhard Ingmar
Moskowitz Paul A
Stoeferle Thilo Hermann Curt
Alexanian Vazken
Blevins Jerry
International Business Machines - Corporation
Lepisto Ryan
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