Optical encoder based on a nondiffractive beam II
Applied Optics, Vol. 48, Issue 2, pp. 414-424 (2009)
http://dx.doi.org/10.1364/AO.48.000414
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Abstract
In a previous work, we introduced the design of an optical encoder based on a nondiffractive beam and demonstrated that it generates a suitable output sinusoidal signal [ Appl. Opt. 47, 2201–2206 (2008)]. In this work, we experimentally, analytically, and numerically study the dependence of the system performance on its parameters (grating pitch, photodetector size, etc.) and propose three different optimization criteria for which the tolerance to variations in the system parameters is also analyzed. We conclude that the proposed design generates a suitable output signal, with high contrast and very low harmonic distortion, while having a remarkable tolerance to variations in its parameters and to mechanical perturbations.
© 2009 Optical Society of America
OCIS Codes
(040.5160) Detectors : Photodetectors
(050.1950) Diffraction and gratings : Diffraction gratings
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.4570) Instrumentation, measurement, and metrology : Optical design of instruments
ToC Category:
Instrumentation, Measurement, and Metrology
History
Original Manuscript: October 27, 2008
Manuscript Accepted: November 20, 2008
Published: January 9, 2009
Citation
Ariel Lutenberg and Fernando Perez-Quintián, "Optical encoder based on a nondiffractive beam II," Appl. Opt. 48, 414-424 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-2-414
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