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. 12, 2007
Filed:
Jul. 25, 2005
Evan L. Goldstein, Princeton, NJ (US);
Lih-yuan Lin, Little Silver, NJ (US);
Chuan Pu, Middletown, NJ (US);
Robert William Tkach, Little Silver, NJ (US);
Evan L. Goldstein, Princeton, NJ (US);
Lih-Yuan Lin, Little Silver, NJ (US);
Chuan Pu, Middletown, NJ (US);
Robert William Tkach, Little Silver, NJ (US);
AT&T Corp., New York, NY (US);
Abstract
An optical carrier drop/add transmission system and method for adding a signal to multiplexed input optical signals conveyed by an optical multiplex input line. The multiplexed input optical signals are demultiplexed to provide isolated input optical signals to an optical switch matrix comprising switches in an array of lines and column, the isolated input optical signals being inputted in a direction parallel to a line of switches in the optical switch matrix. The added optical signal is input in a direction parallel to a column in the optical switch matrix. An output line is selected and the switch that is on the column on which the added optical signal is inputted and on the selected output line is switched.