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| 2. |
- Holm, Ulf, et al.
(författare)
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Measurement system for magneto-optic sensor materials
- 1984
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Ingår i: Journal of Physics E: Scientific Instruments. - : The Institute of Physics. - 0022-3735. ; 17:10, s. 885-889
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Tidskriftsartikel (refereegranskat)abstract
- A system for the measurements of magneto-optic properties of IR-transparent materials is described. The system is designed for the characterisation of fibre optic magnetic field sensor materials. Measurement results on YIG-crystals are prresented. The accuracy of Faraday rotation and light transmission measurements are ±2 mrad and ±2% respectively. Important features for the sensor characterisation are light beam scanning, temperature control and flexible magnetic field generation. A desktop computer is used for system control and data acquisition. The system is expected to be of great importance for future sensor developments.
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| 3. |
- Holm, Ulf, et al.
(författare)
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YIG-SENSOR DESIGN FOR FIBER OPTICAL MAGNETIC-FIELD MEASUREMENTS
- 1984
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Ingår i: PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS, volume 0514. ; , s. 333-336
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Konferensbidrag (refereegranskat)abstract
- Aiming at the design of a magnetic field sensor utilizing the Faraday effect, we give in this paper a description of measurements of magneto-optical properties of YIG. We also give sensor design rules based upon these measurements.
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| 4. |
- Sohlström, Hans, 1952-, et al.
(författare)
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A fibre optic displacement sensor
- 1982
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Ingår i: Acta IMEKO. - Budapest : Akadémiai Kiadó. ; , s. 51-60
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Konferensbidrag (refereegranskat)abstract
- Fibre optics is beginning to find use for sensing purposes. Fibre optic sensors have many interesting features, e.g., their immunity to interference from electromagnetic fields. The paper briefly discusses different sensor principles. A displacement sensor using multimode, step index fibres is desccribed. Measurement data showing a resolution of 0.05 nm/sqrt(Hz) in a 150 µm linear range is given. In this sensor, the light coupling between two fibre ends varies with the position of a movable mirror. A mathematical model of the sensor is presented. Application to pressure sensing is also discussed.
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