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.:
Date of Patent:
Apr. 10, 2001
Filed:
Mar. 26, 1998
Applicant:
Inventors:
Hisashi Minemoto, Ootsu, JP;
Nobuki Itoh, Osaka, JP;
Daisuke Ishiko, Osaka, JP;
Satoshi Ishizuka, Osaka, JP;
Assignee:
Matsuhshita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/01 ; G02F 1/04 ; G02F 1/00 ;
U.S. Cl.
CPC ...
G02F 1/01 ; G02F 1/04 ; G02F 1/00 ;
Abstract
A second-order nonlinear optical material comprises a glass body poled from a first direction and a second direction, which differ from each other, so that the glass body exhibits little birefringence relative to a beam being propagated in a third direction substantially vertical to said first direction and said second direction, respectively, wherein said glass body comprises a major proportion of SiO,and a minor proportion of germanium. A method for making the material, and optical modulator devices comprising the material are also described.