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. 04, 2003
Filed:
Sep. 08, 1999
Robert C Goodfellow, Northants, GB;
Abstract
An optical switching arrangement, e.g. an add-drop multiplexer or switch, for receiving an input signal comprising a plurality of input wavelength encoded optical channels. The arrangement includes a selector for selecting from the plurality of input optical channels for forming a plurality of output signals comprising selected ones of the plurality of input optical channels. A combination of input optical channels in any one of the plurality of output signals is different from a combination of input optical channels in the input signal. The selector comprises a plurality of selective reflectors for selectively reflecting optical channels selected from the plurality of input optical channels. The plurality of selective reflectors are arranged to selectively reflect each of the input optical channels selected for forming the plurality of output signals. The plurality of selective reflectors comprise a first set of selective reflectors for passing a first set of selected optical input channels and reflecting a second set of selected optical input channels and a second set of selective reflectors for reflecting the first set of selected optical input channels and passing the second set of selected optical input channels.