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:
Oct. 16, 2018
Filed:
Apr. 27, 2017
Applicant:
Analog Photonics Llc, Boston, MA (US);
Inventors:
Michael R. Watts, Hingham, MA (US);
Ehsan Shah Hosseini, Milton, MA (US);
Christopher Vincent Poulton, Cambridge, MA (US);
Erman Timurdogan, Boston, MA (US);
Assignee:
ANALOG PHOTONIC LLC, Boston, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/26 (2006.01); G02F 1/225 (2006.01); G02B 6/122 (2006.01); G02B 6/293 (2006.01); G02F 1/015 (2006.01);
U.S. Cl.
CPC ...
G02F 1/225 (2013.01); G02B 6/1223 (2013.01); G02B 6/29331 (2013.01); G02F 2001/0151 (2013.01); G02F 2203/20 (2013.01);
Abstract
An optical device may include at least two waveguides with different propagation constants. Each waveguide is associated with a grating antenna with a grating period selected to emit light at the same emission angle despite the different propagation constants. Each waveguide may be part of an optical path that includes phase shifters. Additionally, the waveguides may be formed in a waveguide layer that is separate from a perturbation layer in which the grating antennas as formed.