Heterodyne fiber-optic gyroscope using orthogonally polarized two-frequency beams
| Autor: | Yoh Imai, Yoshihiro Ohtsuka, Hideaki Koseki |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Physics
Heterodyne Sagnac effect Optical fiber business.industry Materials Science (miscellaneous) Phase (waves) Physics::Optics Beat (acoustics) Gyroscope Fibre optic gyroscope Industrial and Manufacturing Engineering law.invention Optics law Ring laser gyroscope Business and International Management business |
| Zdroj: | Applied optics. 26(15) |
| ISSN: | 1559-128X |
| Popis: | A new type of heterodyne fiber-optic gyroscope using orthogonally polarized light components with different frequencies is described. Each counterpropagating beam consists of the orthogonal components transmitted in the principal axes of a polarization-maintaining fiber coil. A pair of beat signals containing Sagnac phase shifts with opposite signs can be produced by selectively superimposing the counterpropagating components. Detection of the difference between the two beat signals allows a doubling of the Sagnac phase shift free from noise sources raised from differences in frequency and path. In a preliminary experiment, a long-term stability of 5 degrees /h was attained. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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