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:
May. 13, 2014
Filed:
Sep. 10, 2012
Saeed Bagheri, Yorktown Heights, NY (US);
William M. Green, Yorktown Heights, NY (US);
Petar Pepeljugoski, Yorktown Heights, NY (US);
Yurii A. Vlasov, Yorktown Heights, NY (US);
Saeed Bagheri, Yorktown Heights, NY (US);
William M. Green, Yorktown Heights, NY (US);
Petar Pepeljugoski, Yorktown Heights, NY (US);
Yurii A. Vlasov, Yorktown Heights, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A mode-selective add/drop unit for a mode division de/multiplexing device includes an optical ADU waveguide adapted for coupling to an input optical waveguide. The optical ADU waveguide includes at least one region providing optical signal coupling between the ADU waveguide and a multi-mode waveguide; and, one or more phase matching regions for controlling a relative or absolute phase difference between an electromagnetic wave (EMW) carried in the ADU waveguide and the multi-mode waveguide. The mode-selective add/drop unit may further include a transition region connecting the coupling region and a phase matching region, wherein a shape of a transition region is governed by a polynomial function, exponential function, logarithmic function, trigonometric function or, any combination of these functions.