Optical: systems and elements – Optical modulator
Reexamination Certificate
2006-10-12
2009-08-04
Sugarman, Scott J (Department: 2873)
Optical: systems and elements
Optical modulator
C257S017000, C356S445000
Reexamination Certificate
active
07570409
ABSTRACT:
Modulation of electromagnetic radiation is described in which an incident radiation beam is directed toward a surface of a composite material and at least partially reflects to form a reflected radiation beam. The composite material comprises an arrangement of electromagnetically reactive cells of small dimension relative to a wavelength of the incident radiation beam, and exhibits at least one of a negative effective permeability and a negative effective permittivity for at least one frequency. A modulation signal is applied to the composite material to cause a variation in at least one of the effective permeability and the effective permittivity, at least one characteristic of the reflected radiation beam being modulated according to the modulation signal.
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Bratkovski Alexandre
Wang Shih-Yuan
Hewlett--Packard Development Company, L.P.
Pinkey Dawayne A
Sugarman Scott J
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