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Proceedings Paper

Fiber optic gyro development at Fibernetics
Author(s): Ralph A. Bergh; Leif Arnesen; Craig Herdman
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Paper Abstract

Fiber optic gyroscope based inertial sensors are being used within increasingly severe environments, enabling unmanned systems to sense and navigate in areas where GPS satellite navigation is unavailable or jammed. A need exists for smaller, lighter, lower power inertial sensors for the most demanding land, sea, air, and space applications.

Fibernetics is developing a family of inertial sensor systems based on our closed-loop navigation-grade fiber optic gyroscope (FOG). We are making use of the packaging flexibility of the fiber to create a navigation grade inertial measurement unit (IMU) (3 gyroscopes and 3 accelerometers) that has a volume of 102 cubic inches. We are also planning a gyrocompass and an inertial navigation system (INS) having roughly the same size. In this paper we provide an update on our development progress and describe our modulation scheme for the Sagnac interferometers. We also present a novel multiplexed design that efficiently delivers source light to each of the three detectors. In our future development section we discuss our work to improve FOG performance per unit volume, specifically detailing our focus in utilizing a multicore optical fiber.

Paper Details

Date Published: 12 May 2016
PDF: 19 pages
Proc. SPIE 9852, Fiber Optic Sensors and Applications XIII, 98520E (12 May 2016); doi: 10.1117/12.2231144
Show Author Affiliations
Ralph A. Bergh, Fibernetics LLC (United States)
Leif Arnesen, Fibernetics LLC (United States)
Craig Herdman, Fibernetics LLC (United States)


Published in SPIE Proceedings Vol. 9852:
Fiber Optic Sensors and Applications XIII
Eric Udd; Gary Pickrell; Henry H. Du, Editor(s)

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