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 8420993 B1

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

Filed:

Jun. 03, 2011
Applicant:

Shigeaki Sekiguchi, Kawasaki, JP;

Inventor:

Shigeaki Sekiguchi, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J 1/32 (2006.01);
U.S. Cl.
CPC ...
Abstract

An optical signal generator includes a single-mode laser; a reflecting mirror to define another cavity different from a cavity of the single-mode laser, and reflect a part of output light from the single-mode laser to return the part of the output light to the single-mode laser; an intensity modulator provided between the single-mode laser and the reflecting mirror; and a phase adjuster, provided between the single-mode laser and the reflecting mirror, to adjust a frequency difference between a signal on state and a signal off state generated in accordance with intensity modulation by the intensity modulator.


Find Patent Forward Citations

Sekiguchi, Shigeaki. (2013). Optical signal generator and method for adjusting the same having a reflecting mirror to define another cavity different from the cavity of a single mode laser (U.S. Patent No. 8420993). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8420993

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