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:
Jun. 13, 2006
Filed:
Jan. 22, 2002
Applicants:
Terry M. Turpin, Columbia, MD (US);
Keith R. Frampton, Sykesville, MD (US);
Inventors:
Terry M. Turpin, Columbia, MD (US);
Keith R. Frampton, Sykesville, MD (US);
Assignee:
Essex Corporation, Columbia, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 14/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
An Optical Tapped Delay Line (OTDL) is combined with other known optical apparatuses to provide an add-drop multiplexer for a wavelength division multiplexing fiber optic network. Each output beam of the OTDL is spatially distinguishable in free space. This wavelength accessibility enables selection of one or more of the optical beams for adding or dropping. The system can be a fixed or tunable single channel add/drop system, a fixed or tunable multi-channel add/drop system, or a fully programmable add/drop system.