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:
Oct. 10, 2006
Filed:
Oct. 07, 2002
Applicant:
Masataka Tei, Kasugai, JP;
Inventor:
Masataka Tei, Kasugai, JP;
Assignee:
Santec Corporation, Komaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J 14/00 (2006.01); H04J 14/02 (2006.01); H04B 10/12 (2006.01); G02B 27/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
Two set of filter chips on the upper and lower surfaces, each of which has a wavelength characteristic corresponding to each wavelength component of wavelength-multiplexed light, are mounted on a transparent substrate to make an optical filter element. When the wavelength-multiplexed light is inputted to the optical filter element via an optical fiber and when the same light components as those having the wavelengths demultiplexed by an optical fiber is also inputted, the demultiplexed light and the replaced wavelength-multiplexed light will be obtained at another optical fibers, respectively.