Quadrant detector using close-packed optical fibers

Xiang Jiang; Peiqian Zhao; Bozhong Gu

doi:10.1117/12.141303

5 March 1993 Quadrant detector using close-packed optical fibers

Xiang Jiang, Peiqian Zhao, Bozhong Gu

Proceedings Volume 1797, Distributed and Multiplexed Fiber Optic Sensors II; (1993) https://doi.org/10.1117/12.141303
Event: Fibers '92, 1992, Boston, MA, United States

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.

Citation Download Citation

Xiang Jiang, Peiqian Zhao, and Bozhong Gu "Quadrant detector using close-packed optical fibers", Proc. SPIE 1797, Distributed and Multiplexed Fiber Optic Sensors II, (5 March 1993); https://doi.org/10.1117/12.141303

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