Title :
An optical fiber microdisplacement sensor utilizing thermal source and diffraction grating
Author :
Das, K.K. ; Ashour, H.S. ; Alam, M.S.
Author_Institution :
Electro-Optics Prog., Dayton Univ., OH, USA
Abstract :
An optical fiber microdisplacement sensor is developed utilizing a thermal source and a diffraction grating as a dispersive component. The present sensor is simple to demonstrate and it uses inexpensive experimental configuration compared to the existing displacement sensors. A multimode fiber with a core/cladding ratio of 65.5/125 is used as the guiding medium. The optical system is optimized to find a minimum spot size using the Code V optical design software. Finally, a theoretical analysis is presented for the compensation of source variation
Keywords :
CAD; diffraction gratings; displacement measurement; error compensation; fibre optic sensors; measurement errors; optical design techniques; physics computing; Code V; compensation; core/cladding ratio; diffraction grating; dispersive component; minimum spot size; multimode fiber; optical design software; optical fiber microdisplacement sensor; optical system; source variation; theoretical analysis; thermal source; Design optimization; Diffraction gratings; Dispersion; Fiber gratings; Optical design; Optical diffraction; Optical fiber sensors; Optical fibers; Optical sensors; Thermal sensors;
Conference_Titel :
Aerospace and Electronics Conference, 1997. NAECON 1997., Proceedings of the IEEE 1997 National
Conference_Location :
Dayton, OH
Print_ISBN :
0-7803-3725-5
DOI :
10.1109/NAECON.1997.618121
