| タイトル | Curved Piezoelectric Actuators for Stretching Optical Fibers |
| 本文（外部サイト） | http://hdl.handle.net/2060/20090020594 |
| 著者（英） | Allison, Sidney G.; Shams, Qamar A.; Fox, Robert L. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 2008-01-01 |
| 言語 | eng |
| 内容記述 | Assemblies containing curved piezoceramic fiber composite actuators have been invented as means of stretching optical fibers by amounts that depend on applied drive voltages. Piezoceramic fiber composite actuators are conventionally manufactured as sheets or ribbons that are flat and flexible, but can be made curved to obtain load-carrying ability and displacement greater than those obtainable from the flat versions. In the primary embodiment of this invention, piezoceramic fibers are oriented parallel to the direction of longitudinal displacement of the actuators so that application of drive voltage causes the actuator to flatten, producing maximum motion. Actuator motion can be transmitted to the optical fiber by use of hinges and clamp blocks. In the original application of this invention, the optical fiber contains a Bragg grating and the purpose of the controlled stretching of the fiber is to tune the grating as part of a small, lightweight, mode-hop-free, rapidly tunable laser for demodulating strain in Bragg-grating strain-measurement optical fibers attached to structures. The invention could also be used to apply controllable tensile force or displacement to an object other than an optical fiber. |
| NASA分類 | Electronics and Electrical Engineering |
| レポートNO | LAR-17356-1 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/509474 |
