Simple design of optical fiber displacement sensor using a multimode fiber coupler
Document Type
Article
Publication Date
1-1-2009
Abstract
A simple design sensor is demonstrated using a fabricated multimode plastic fiber coupler in con-junction with reflective intensity modulation technique. The performances of this sensor are investigated for different light sources. This sensor uses only one fiber for sending and receiving the light and therefore only the back slope exists. The sensor shows the highest performance with the use of yellow light source, which has the highest intensity and the smallest beam divergence. The sensitivity, linear range, resolution and dynamic range of the sensor are obtained at 0.0001 mV/μm, 1500 μm, 70 μm, and 5.0 mm, respectively. The simplicity of the design, high degree of sensitivity, dynamic range and the low cost of the fabrication make it suitable for real field applications.
Keywords
Beam divergence, Degree of sensitivity, Dynamic range, Field application, Linear range, Low costs, Multimodes, Optical fiber displacement, Plastic fibers, Reflective intensity, Yellow light
Divisions
fac_eng,PHYSICS
Publication Title
Laser Physics
Volume
19
Issue
7
Publisher
IOP Publishing