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. 21, 2011
Filed:
Sep. 05, 2008
Keith Conroy, Perkasie, PA (US);
Omer Acikel, San Diego, CA (US);
Francesco Caggioni, Winchester, MA (US);
Keith Conroy, Perkasie, PA (US);
Omer Acikel, San Diego, CA (US);
Francesco Caggioni, Winchester, MA (US);
Applied Micro Circuits Corporation, San Diego, CA (US);
Abstract
A system and method are provided for controlling time delay in a multichannel optical transport network (OTN) transmission device using time domain reflectometry (TDR) measurements. The method accepts a pair of 2-phase shift keying (2-PSK) modulated signals via Ix and Qx electrical signal paths, where n>1. Likewise, a pair of 2-PSK modulated signals are accepted via Iy and Qy electrical signal paths where p>1. Using TDR modules, signal reflections are measured from an output port for each signal path. The method minimizes time delay differences in the signal reflections for the Ix, Qx, Iy, and Qy signals paths by using the signal reflection measurements to adjust time delay modules in each signal path.