The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8488979 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 16, 2013

Filed:

Dec. 23, 2009
Applicants:

Inwoong Kim, Allen, TX (US);

Takao Naito, Plano, TX (US);

Inventors:

Inwoong Kim, Allen, TX (US);

Takao Naito, Plano, TX (US);

Assignee:

Fujitsu Limited, Kawasaki-shi, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 10/04 (2006.01); H04B 10/12 (2006.01);
U.S. Cl.
CPC ...
Abstract

An apparatus for use with an optical computation system may comprise a monolithic device with no free space optical components and may include a phase modulator and a polarization modulator. The phase modulator may be configured to receive a beam of light and two digital data streams and operable to modulate the phase of the beam of light to at least four phase states, the at least four phase states representing the two digital data streams. The polarization modulator may be configured to receive two additional digital data streams and the modulated beam of light from the phase modulator and operable to modulate the polarization of the beam of light to at least four polarization states, the at least four polarization states representing the two additional digital data streams.


Find Patent Forward Citations

Kim, Inwoong. (2013). Multi-level polarization multi-level phase modulator (U.S. Patent No. 8488979). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8488979

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