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Proceedings Paper

Quadrant detector using close-packed optical fibers
Author(s): Xiang Jiang; Peiqian Zhao; Bozhong Gu
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Paper Abstract

We have constructed a prototype quadrant detector by polishing two sides of the ends of four optical fibers at right angles to each other. The fibers are then brought tightly together. The lines of contact of the fibers then form a crosshair dividing the area of the fibers into four quadrants. Each quadrant transmits a part of a star image respectively. In order to obtain high detecting accuracy and high efficiency, the width of the crosshair should be as thin as possible. We have designed a special structure and used it to fabricate several quadrant fiber assemblies. The width of each crosshair can be made less than 10 micrometers. Using a photomultiplier to detect the light transmitted by each fiber, we then have a high sensitivity quadrant detector for monitoring the position of faint objects.

Paper Details

Date Published: 5 March 1993
PDF: 3 pages
Proc. SPIE 1797, Distributed and Multiplexed Fiber Optic Sensors II, (5 March 1993); doi: 10.1117/12.141303
Show Author Affiliations
Xiang Jiang, Nanjing Astronomical Instruments Research Ctr. (China)
Peiqian Zhao, Nanjing Astronomical Instruments Research Ctr. (China)
Bozhong Gu, Nanjing Astronomical Instruments Research Ctr. (China)

Published in SPIE Proceedings Vol. 1797:
Distributed and Multiplexed Fiber Optic Sensors II
John P. Dakin; Alan D. Kersey, Editor(s)

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