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A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

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Phase-modulated fiber optic gyroscope with wide dynamic range and linear scale factor.

K Ono, Y Nishiura, M Nishikawa

|June 29, 2010

Summary

This study introduces an open-loop fiber optic gyroscope. It demonstrates a wide dynamic range and linear scale factor, verified by preliminary experiments.

Area of Science:

Optoelectronics
Inertial Sensing

Background:

Fiber optic gyroscopes (FOGs) are crucial for inertial navigation.
Traditional FOGs face challenges with dynamic range and linearity.

Purpose of the Study:

To describe a novel open-loop phase-modulated fiber optic gyroscope.
To achieve a wide dynamic range and linear scale factor.

Main Methods:

Utilized phase-sensitive detection and electronic amplitude modulators.
Transposed optical Sagnac phase shift to an electrical phase shift.
Employed independent carrier frequencies for modulation.

Main Results:

Demonstrated good linearity over a wide dynamic range (up to 1000 degrees/s).

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Verified theoretical predictions through preliminary experiments.

Achieved a linear scale factor.

Conclusions:

The proposed open-loop FOG design is effective.
The system offers significant improvements in dynamic range and linearity for inertial sensing applications.