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. 21, 2017
Filed:
Mar. 31, 2016
Applicant:
Lumentum Operations Llc, Milpitas, CA (US);
Inventors:
Barrie Keyworth, Ontario, CA;
Paul Colbourne, Ottawa, CA;
Assignee:
Lumentum Operations LLC, Milpitas, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/32 (2006.01); G02B 6/35 (2006.01); G02B 6/27 (2006.01); G02B 6/293 (2006.01);
U.S. Cl.
CPC ...
G02B 6/3594 (2013.01); G02B 6/272 (2013.01); G02B 6/2766 (2013.01); G02B 6/29305 (2013.01); G02B 6/32 (2013.01); G02B 6/356 (2013.01); G02B 6/3512 (2013.01); G02B 6/3514 (2013.01); G02B 6/3518 (2013.01); G02B 6/3534 (2013.01); G02B 6/3546 (2013.01); G02B 6/3556 (2013.01);
Abstract
The number of wavelength selective switch (WSS) units in a WSS device can be doubled by using polarization properties of optical beams propagating through the WSS device. Beams from different WSS units are orthogonally polarized at the front end, propagated through collimator, wavelength dispersing element, and a focusing element, and impinge on a polarizing beamsplitter, which directs sub-beams at different polarizations to different directing elements of a director array. A polarization diversity configuration at the back end can be used to reduce polarization dependent loss.