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:
Mar. 07, 2006
Filed:
Nov. 02, 2001
David LI, Sunnyvale, CA (US);
Hong Liang Cui, Basking Ridge, NJ (US);
David Li, Sunnyvale, CA (US);
Hong Liang Cui, Basking Ridge, NJ (US);
Hon Hai Precision Ind. Co., Ltd., Taipei Hsien, TW;
Abstract
An optical add-drop multiplexer comprises an optical switch () for selection of a desired wavelength channel to be extracted, a pre-processing channel assembly (), an optical reflector (), an optical extractor (), a post-processing channel assembly (), and an optical coupler () aligned with the post-processing channel assembly. The pre-processing channel assembly transmits a multiplexed signal stream containing a plurality of channels. The optical reflector directs light rays emitted from the pre-processing channel assembly into the optical extractor. The optical extractor comprises a narrow bandpass filter () that allows a desired channel to pass therethrough and reflects other unextracted channels. The desired channel can be dropped by switching to a corresponding output port of the optical switch. The optical reflector directs light rays reflected from the optical extractor to the post-processing channel assembly. The optical coupler combines the unextracted channels and an insertion channel.