13 July 1978 Fiber Optic Rotation Sensor (FORS) Signal Detection And Processing
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Proceedings Volume 0139, Guided Wave Optical Systems and Devices I; (1978); doi: 10.1117/12.956246
Event: 1978 Technical Symposium East, 1978, Washington, D.C., United States
Abstract
The recent development of low loss single mode optical fiber waveguides for light has made possible a new class of inertial reference devices built on the principal of a closed loop interferometer. Light circulating through the loop in both directions experiences a relative phase delay proportional to rotation rate about the loop axis. This paper derives the phase delay and discusses signal detection, signal processing techniques and error sources. It is concluded that synchronous modulation and demodulation and an active gain control at the signal calculational level are required to eliminate drift errors. Potential performance is extraordinarily good; rotation rate sensitivity of a few milli-arc seconds per second and angular position random walk errors of an arc second per square root hour appear feasible.
© (1978) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Willis C. Goss, Raymond Goldstein, "Fiber Optic Rotation Sensor (FORS) Signal Detection And Processing", Proc. SPIE 0139, Guided Wave Optical Systems and Devices I, (13 July 1978); doi: 10.1117/12.956246; https://doi.org/10.1117/12.956246
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KEYWORDS
Signal detection

Sensors

Beam splitters

Fiber optics sensors

Waveguides

Signal processing

Fiber optics

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