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, 2008
Filed:
Oct. 10, 2003
Gary C. Marsden, Austin, TX (US);
Gary C. Marsden, Austin, TX (US);
Finisar Corporation, Sunnyvale, CA (US);
Abstract
Multiple channel multiplexing and demultiplexing systems and methods are provided for use in optical communication systems. In one embodiment, an optical multiplexer/demultiplexer system comprises an optical filter, a first optical isolator in optical communication with one side of the optical filter, a second optical isolator in optical communication with an opposite side of the optical filter, and a light disposer in optical communication with the first optical isolator. In another embodiment, an optical multiplexer/demultiplexer system comprises a first boundary filter, a first transitional optical filter in optical communication with the first boundary filter, a second boundary filter in optical communication with the first transitional optical filter, a second transitional optical filter in optical communication with the second boundary filter, and a third boundary filter in optical communication with the first transitional optical filter. Various optical filtering techniques are disclosed which utilize filters with shifted free spectral ranges, half-band filters, or boundary filtering. These filtering techniques can be used in both multiplexing and demultiplexing methods.