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Optical Engineering

Collimated beam fiber optic position sensor: effects of sample rotations on modulation functions
Author(s): Haiming Wang
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Paper Abstract

A reflective intensity-modulation-based fiber optic position sensor is studied. The sensor consists of input and output channels attached with graded-index (GRIN) lenses. The input channel launches a collimated probe beam onto a sample, and then the output channel collects the light reflected and scattered from the sample. Light power from the output channel directly depends on the distance between the sensor head and the sample (the proximity), which defines a modulation function to characterize the sensor. For practical purposes, effects of sample reflectivity on sensor response are discussed for the cases of specularly reflective and Lambertian diffusive samples. Effects of sample rotations are also studied.

Paper Details

Date Published: 1 January 1997
PDF: 7 pages
Opt. Eng. 36(1) doi: 10.1117/1.601152
Published in: Optical Engineering Volume 36, Issue 1
Show Author Affiliations
Haiming Wang, Centro de Investigaciones en Optica, AC (United States)


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