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Transverse strain measurements using fiber optic grating based sensors
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1998 |
| Description | A system and method to sense the application of transverse stress to an optical fiber which includes a light source that producing a relatively wide spectrum light beam. The light beam is reflected or transmitted off of an optical grating in the core of an optical fiber that is transversely stressed either directly or by the exposure to pressure when the fiber is bifringent so that the optical fiber responds to the pressure to transversely stress its core. When transversely stressed, the optical grating produces a reflection or transmission from the light beam that has two peaks or minimums in its frequency spectrum whose spacing and/or spread are indicative of the forces applied to the fiber. One or more detectors sense the reflection or transmissions from the optical grating to produce an output representative of the applied force. Multiple optical gratings and detectors may be employed to simultaneously measure temperature or the forces at different locations along the fiber. |
| File Size | 1120737 |
| Page Count | 18 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20080004554 |
| Archival Resource Key | ark:/13960/t9c58jf8r |
| Language | English |
| Publisher Date | 1998-10-27 |
| Access Restriction | Open |
| Subject Keyword | Optics Optical Fibers Patents Light Beams Strain Measurement Spectra Fiber Optics Light Sources Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
