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dc.contributor.authorNaval Postgraduate School Physics
dc.datePublished on Dec 24, 2014
dc.date.accessioned2017-11-22T21:39:07Z
dc.date.available2017-11-22T21:39:07Z
dc.date.issued2014
dc.identifier.urihttp://hdl.handle.net/10945/56274
dc.descriptionNPS Physicsen_US
dc.descriptionPhysics Demonstrationsen_US
dc.description.abstractA Fiber Optic Interferometer is a highly coherent laser light that's launched into a single mode optical fiber and then split equally into two paths to form the two legs of an interferometer. One leg of the fiber is wound around a piezoelectric cylinder while the other leg lies on the table. A voltage is applied to the piezoelectric cylinder to excite it into radial vibrations. The light passing through the leg on the cylinder travels different distances as the cylinder vibrates. When the light from two legs is recombined, the intensity of the combined light measured by a photodetector changes rapidly. Very small path length differences are detected by constructive and destructive interference as the light in the two paths changes phase relative to each other.en_US
dc.format.extentDuration: 6:03. Filesize: 51.3 MB
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.titleInterferometer - How We Measure Tiny Physical Changes [video]en_US
dc.typeVideoen_US
dc.contributor.departmentPhysics


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