Direct optical digital detection of diaphragm deflection: maximum resolution
| Autor: | Yasuo Muramatsu, Hitoshi Mada |
|---|---|
| Rok vydání: | 1986 |
| Předmět: |
Physics
Multi-mode optical fiber Optical fiber business.industry Materials Science (miscellaneous) Detector Physics::Optics Michelson interferometer Interference (wave propagation) Industrial and Manufacturing Engineering law.invention Interferometry Optics law Astronomical interferometer Business and International Management business Diaphragm (optics) |
| Zdroj: | Applied optics. 25(5) |
| ISSN: | 1559-128X |
| Popis: | The direct optical digital detection of analog mechanical motion of a diaphragm is described both experimentally and theoretically. The conversion is made by a Michelson interferometer which detects deformation of the diaphragm caused by acoustic pressure. Theoretical calculation shows that the maximum resolution is strongly dependent on the detector width, it becomes 9 bits when a single-mode optical fiber is used as the detector. An 8-bit A-D conversion is experimentally obtained using a Michelson interferometer constructed with a He-Ne laser, a 2.54-cm (1-in.) diam diaphragm, and a detector of 50-microm diam multimode optical fibers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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