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:
Aug. 28, 2018
Filed:
May. 27, 2016
Applicant:
Lumentum Operations Llc, Milpitas, CA (US);
Inventor:
Sheldon McLaughlin, Ottawa, CA;
Assignee:
Lumentum Operations LLC, Milpitas, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J 3/28 (2006.01); G02B 6/293 (2006.01); G01J 3/02 (2006.01); G01J 3/18 (2006.01); G01J 3/22 (2006.01); G02B 5/18 (2006.01); G02B 5/12 (2006.01); G02B 6/35 (2006.01); G02B 17/08 (2006.01);
U.S. Cl.
CPC ...
G02B 6/29313 (2013.01); G01J 3/02 (2013.01); G01J 3/021 (2013.01); G01J 3/0205 (2013.01); G01J 3/0208 (2013.01); G01J 3/0243 (2013.01); G01J 3/0256 (2013.01); G01J 3/0291 (2013.01); G01J 3/1804 (2013.01); G01J 3/22 (2013.01); G02B 5/12 (2013.01); G02B 5/1809 (2013.01); G02B 5/1814 (2013.01); G02B 5/1866 (2013.01); G02B 6/2931 (2013.01); G02B 6/2938 (2013.01); G02B 6/29311 (2013.01); G02B 6/354 (2013.01); G02B 17/0856 (2013.01); G02B 2005/1804 (2013.01);
Abstract
A compact wavelength dispersing device and a wavelength selective optical switch based on the wavelength dispersing device is described. The wavelength dispersing device has a folding mirror that folds the optical path at least three times. A focal length of a focusing coupler of the device is reduced and the NA is increased, while the increased optical aberrations are mitigated by using an optional coma-compensating wedge. A double-pass arrangement for a transmission diffraction grating allows further focal length and overall size reduction due to increased angular dispersion.