Main Page | See live article | Alphabetical index A ring laser gyroscope uses interference of laser light within a fiber optic ring to detect changes in orientation and spin. Unlike a mechanical gyroscope, the device does not resist changes to its orientation (or at least, these effects are extremely tiny because photons are so light). external links: Optical Kerr-effect in fiber-optic Brillouin ring laser gyroscopes This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.