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. 04, 2017
Filed:
Aug. 21, 2014
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
Fumihiro Nakajima, Yokohama, JP;
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
Abstract
A receiver optical module that receives a wavelength multiplexed signal is disclosed. The receiver optical module includes an optical de-multiplexer that generates a plurality of signals contained in the wavelength multiplexed signal depending on wavelengths of the signals. The wavelength de-multiplexer has features that the optical de-multiplexer has a plurality of sub-elements stacked to each other, where each of the sub-elements de-multiplexes a portion of the wavelength multiplexed signal. Or, the optical de-multiplexer has a series of wavelength selective filters each extracting signal components having outermost wavelengths from signal components entering therein.