Ka Hiu Wong

US Patent:

7746476, Jun 29, 2010

Filed:

Jul 11, 2007

Appl. No.:

11/776452

Inventors:

Joseph R. Demers - Glendale CA, US
Ka Kha Wong - Alhambra CA, US

Assignee:

Emcore Corporation - Albuquerque NM

International Classification:

G01C 19/72

US Classification:

356462, 356460

Abstract:

A fiber optic gyroscope including an optical circulator in the path of said first and second beams for providing polarized first and second beams of identical polarization. A phase modulator couples the first and second beams to the first and second end respectively of the fiber loop, and couples for receiving the return first and second beams from the second and first ends respectively of the fiber loop. First and second photodiodes are coupled to the optical circulator for receiving the optical signal from the first and second return beams.

US Patent:

20130033737, Feb 7, 2013

Filed:

Aug 4, 2011

Appl. No.:

13/198488

Inventors:

Ka Kha Wong - Alhambra CA, US

Assignee:

Emcore Corporation - Albuquerque NM

International Classification:

G02F 1/01
B32B 38/10
B23P 11/00
B32B 37/12

US Classification:

359279, 156 60, 156256, 29428

Abstract:

Methods of attaching an optical line to a phase modulator in a fiber optic gyroscope. The methods include positioning at least one end of the optical line relative to a side of the phase modulator. The end of the optical line may have a first non-perpendicular angle and the side of the phase modulator may have a second non-perpendicular angle. The end of the optical line may be attached to the side of the phase modulator with the end of the optical line being non-parallel to the side of the phase modulator. The optical line may be an optical coil or a light path.