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Proceedings Paper

Synthesis Of Interference Patterns In Few-Mode Optical Fibers
Author(s): A. Safaai-Jazi; R. O. Claus
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Paper Abstract

When a single-mode fiber is operated at a wavelength shorter than its nominal wave-lenght, few lower-order modes are excited and an interference pattern develops which is sensitive to differential phase variations of the modes. Intensity patterns resulting from the interference of the pairs of modes LPoi, LP11 and LP11, LP21 are examined. By proper choices of phase and amplitude of the interfering modes, one,two and three-lobe patterns can be synthesized which exhibit oscillatory or rotational behavior in response to an external disturbance. Launching conditions for achieving such patterns are discussed. Sensor applications of few-mode fibers, particularlyfor strain and temperature sensing, are addressed.

Paper Details

Date Published: 16 January 1989
PDF: 6 pages
Proc. SPIE 0986, Fiber Optic Smart Structures and Skins, (16 January 1989); doi: 10.1117/12.948902
Show Author Affiliations
A. Safaai-Jazi, Virginia Polytechnic Institute and State University (United States)
R. O. Claus, Virginia Polytechnic Institute and State University (United States)


Published in SPIE Proceedings Vol. 0986:
Fiber Optic Smart Structures and Skins
Eric Udd, Editor(s)

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