Brian A Daniel

US Patent:

20200310028, Oct 1, 2020

Filed:

Dec 30, 2019

Appl. No.:

16/730527

Inventors:

- San Jose CA, US
Konstantin Petrovich PETROV - Sunnyvale CA, US
Brian DANIEL - San Diego CA, US
Hossein HODAEI - San Jose CA, US
Michael C. LARSON - Oakland CA, US
Amit MIZRAHI - San Jose CA, US

International Classification:

G02B 6/125
G02B 6/122
G02B 6/12

Abstract:

A photonic integrated circuit may include a substrate and an optical waveguide integrated with the substrate. The optical waveguide may include a bend section, wherein a bend shape of the bend section is defined by a curvature function to suppress waveguide mode conversion.

US Patent:

20190086611, Mar 21, 2019

Filed:

Jun 18, 2018

Appl. No.:

16/011155

Inventors:

- Milpitas CA, US
Brian Daniel - Milpitas CA, US

International Classification:

G02B 6/14
G02B 6/122
G02B 6/30
G02B 6/10

Abstract:

A mode-converting optical coupler may include a secondary waveguide to guide light in one or more secondary optical modes, and a primary waveguide to guide light in one or more primary optical modes, each adiabatically coupled to a secondary optical mode of the secondary waveguide having a secondary mode index. Each primary optical mode of the primary waveguide may have a first primary mode index near a first end and a second primary mode index near a second end. The first primary mode index may be lower than the second primary mode index. The secondary mode index may be between the first primary mode index and the second primary mode index. The primary waveguide may include a plurality of silicon core structures including a central core structure arranged between a first neighboring core structure and a second neighboring core structure.

US Patent:

20160025934, Jan 28, 2016

Filed:

Jul 23, 2014

Appl. No.:

14/338408

Inventors:

- Saxonburg PA, US
Mark H. Garrett - Morgan Hill CA, US
Aravanan Gurusami - Morgan Hill CA, US
Brian Daniel - San Jose CA, US

Assignee:

II-VI INCORPORATED - Saxonburg PA

International Classification:

G02B 6/35
H04Q 11/00

Abstract:

An optical switch is configured in a “dual-ganged” switch geometry to provide for the simultaneous switching of a selected transmit/receive pair of optical signal paths between a specific optical communication device and an optical communication network. A biaxially-symmetric signal redirection component may be used to direct the signals between the selected channel and the optical communication device. A specific waveguide (e.g., fiber) array topology within the dual-ganged switch (DGS) breaks the symmetry between the network transmit/receive arrays and a pair of transmit and receive signal paths associated with the communication device to improve isolation and minimize the possibility of cross-talk between non-selected waveguides in the transmit and receive arrays. The possibility of “hits” during switching between channels can be eliminated, and is controlled by dictating the process or switching steps used to rotate the biaxially-symmetric signal redirection element.