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Fiber-optic angular sensor with interleaved channel spectra

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Abstract

The angular position of a polarizer determines the power ratio of two light beams with interleaved channel spectra, filtered from a broadband light-emitting diode. The beams are transmitted simultaneously through a 750-m-long multimode fiber and then analyzed. An angular resolution of 0.5° over a 70° range is obtained, independently of the attenuation of the fiber link.

© 1986 Optical Society of America

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