| タイトル | Detection, Evaluation, and Optimization of Optical Signals Generated by Fiber Optic Bragg Gratings Under Dynamic Excitations |
| 本文（外部サイト） | http://hdl.handle.net/2060/20020081108 |
| 著者（英） | Lock, James A.; Lekki, John; Adamovsky, Grigory |
| 著者所属（英） | NASA Glenn Research Center |
| 発行日 | 2002-08-01 |
| 言語 | eng |
| 内容記述 | The dynamic response of a fiber optic Bragg grating to mechanical vibrations is examined both theoretically and experimentally. The theoretical expressions describing the consequences of changes in the grating's reflection spectrum are derived for partially coherent beams in an interferometer. The analysis is given in terms of the dominant wavelength, optical bandwidth, and optical path difference of the interfering signals. Changes in the reflection spectrum caused by a periodic stretching and compression of the grating were experimentally measured using an unbalanced Michelson interferometer, a Michelson interferometer with a non-zero optical path difference. The interferometer's sensitivity to changes in dominant wavelength of the interfering beams was measured as a function of interferometer unbalance and was compared to theoretical predictions. The theoretical analysis enables the user to determine the optimum performance for an unbalanced interferometer. |
| NASA分類 | Instrumentation and Photography |
| レポートNO | NAS 1.15:211565
NASA/TM-2002-211565
E-13343 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/224042 |
