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:
Feb. 12, 2002
Filed:
Mar. 31, 1999
Applicant:
Inventors:
Abdelkrim Tatah, Arlington, MA (US);
Xinbing Liu, Acton, MA (US);
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/34 ;
U.S. Cl.
CPC ...
G02B 6/34 ;
Abstract
A method for forming a diffraction grating in an optical fiber. First and second ultrashort laser pulses are generated. The first and second ultrashort laser pulses are directed to intersect and form an interference pattern. The interference pattern includes periodic intensity variations which cause corresponding periodic changes in an index of refraction of the optical fiber. The ultrashort laser pulses and the optical fiber are configured to be self-focused by the cladding and core of the optical fiber.