Coating an optical fiber with a magnetic film, which can 'squeeze' the fiber selectively along its length and cause a reflection at the stricture, permits an interferometric length measurement useful in locating a precision mechanical device, such as a robot arm. Fiber-optic interferometers offer economic and performance improvements over interferometers using frequency stabilized gas lasers and delicate optics for distance measurement.
|Original language||English (US)|
|Number of pages||1|
|Journal||IBM technical disclosure bulletin|
|State||Published - Nov 1984|
ASJC Scopus subject areas