| タイトル | Remote displacement measurement using a passive interferometer with a fiber-optic link |
| 著者（英） | Beheim, G. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1985-08-01 |
| 言語 | eng |
| 内容記述 | Remote displacement measurement is demonstrated using a Fabry-Perot cavity with a multimode optical fiber link. The sensing cavity modulates, as a function of its length, the spectrum of a light-emitting diode (LED). The light returns via the fiber and is analyzed by a tunable reference cavity. A closed-loop control causes the reference cavity to track the sensing cavity length within 2 x 10 to the -12th m. Displacement range is 2 x 10 to the -6th m. The reference cavity length is measured interferometrically, using a laser, to obtain the sensing cavity length. Advantages of this sensing technique include compatibility with multimode fiber-optic components, high immunity to optical losses, and large dynamic range. |
| NASA分類 | INSTRUMENTATION AND PHOTOGRAPHY |
| レポートNO | 85A42857 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/390317 |
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