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:
Feb. 19, 2013
Filed:
Mar. 15, 2007
Stephen Desbruslais, New Eltham, GB;
Richard Oberland, Eltham, GB;
Stuart Robert Barnes, Whiteparish, GB;
Stephen Michael Webb, Kent, GB;
Stephen Desbruslais, New Eltham, GB;
Richard Oberland, Eltham, GB;
Stuart Robert Barnes, Whiteparish, GB;
Stephen Michael Webb, Kent, GB;
Xtera Communications, Inc., Allen, TX (US);
Abstract
A device and method for depolarising the total field of a wavelength division multiplexed (WDM) signal is provided. A polarization maintaining multiplexor combines a plurality of optical signals to form a polarized multiplexed signal. The multiplexed signal is then passed through a differential group delay (DGD) element adapted to modify the polarization state of one or more optical source signals within the multiplexed signal and thereby to at least partially depolarise the multiplexed signal.