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:
Nov. 16, 2004
Filed:
Mar. 16, 2001
David Alan Baldwin, Annadale, VA (US);
Todd Lanier Hylton, Great Falls, VA (US);
4 Wave, Inc., Sterling, VA (US);
Abstract
A multi-channel optical device includes a first plurality of optical structures formed simultaneously using vapor deposition on different regions of a common substrate. Each optical structure in the plurality is comprised of a plurality of thin-film layers. The thickness of each layer in a given optical structure corresponds to a wavelength associated with one of the channels. A reflector has a surface parallel to the common substrate, and a transport region is disposed between the first plurality of optical structures and the reflector. An aperture is disposed at one end of the transport region, and the first plurality of optical structures are disposed along a length of the transport region. When an input optical signal is provided to the aperture, the device functions as an optical demultiplexer and output optical signals associated with different ones of the channels are generated at separate positions along a length of the transport region. When input optical signals are applied to separate positions along the length of the transport region, the device functions as an optical multiplexer and those input optical signals are combined in the transport region and output as a combined optical output signal at the aperture.