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:
Aug. 18, 2009
Filed:
May. 15, 2007
Nobuo Miyadera, Tsukuba, JP;
Rei Yamamoto, Tsukuba, JP;
Nobuo Miyadera, Tsukuba, JP;
Rei Yamamoto, Tsukuba, JP;
Hitachi Chemical Company, Ltd., Tokyo, JP;
Abstract
An optical reflector, an optical multiplexer/demultiplexer device and an optical system which can allow more flexible arrangement of an optical filter thereof, and enhance performance of wavelength division multiplexing communication thereof are provided. An optical reflector according to the present invention comprises a first and second optical fiber, each being connected to one side of an optical propagating region such as a rod lenscausing optical strength distributions depending on respective wavelengths of lights to be propagated in the optical propagating region; a mirrordisposed on the other side of the optical propagating region; and an optical filterdisposed between the first and second optical fibersand the mirrorThe optical filteris reflected a light having a first wavelength and allows another light having a second wavelength to be transmitted therethrough; and the mirroris reflected the light having the second wavelength, so that the lights having the first and second wavelengths are propagated between the first optical fiberand the second optical fiber