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:
Jan. 10, 2006
Filed:
Dec. 10, 2003
Masanori Koshiba, Sapporo, JP;
Kunimasa Saitoh, Sapporo, JP;
Masanori Koshiba, Sapporo, JP;
Kunimasa Saitoh, Sapporo, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
An optical fiber comprises a core region extending along a predetermined axis X, and a cladding region surrounding the core region. The cladding regioncomprises first to (N+1)-th regions such that the first region surrounds the core region, and the (k+1)-th region surrounds the k-th region (k=1, 2, . . . , N). At least one of the first to (N+1)-th regions includes, in a main medium having a predetermined refractive index, a sub-region made of an auxiliary medium having a refractive index different from that of the main medium. Letting n[0] be the average refractive index of the core region, and n[k] (k=1, 2, . . . , N+1) be the average refractive index of the k-th region, this optical fiber satisfies the relationship of n[0]>n[1], and n[i]>n[i+1] (∀i=h, h+1, . . . , h+m; where h and m are natural numbers).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile