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:
Dec. 28, 2004
Filed:
Apr. 12, 2002
James A. Cox, New Brighton, MN (US);
Robert A. Morgan, Plymouth, MN (US);
Finisar Corporation, Sunnyvale, CA (US);
Abstract
An optical system that includes at least two optical emitters and/or optical receivers that have a corresponding guided-mode grating resonant reflector filter (GMGRF). Each GMGRF is preferably tuned to a unique wavelength and/or polarization by adjusting selected GMGRF parameters, such as the grating period and/or the thickness of the grating or other layers. One advantage of this construction is that the various optical emitters and/or optical receivers may be finely tuned, often lithographically, to provide fine wavelength resolution and/or polarization control. For WDM and WDD applications, this may allow closely-spaced optical transmission channels, and may simplify the wavelength-selective WDM and WDD operations required for simultaneous transmission of the channels.