Open AccessCalculus of exact detuning phase shift error in temporal phase shifting algorithms
Author(s) -
J. F. Mosiño,
D. Malacara Doblado,
Daniel Malacara Hernández
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.015766
Subject(s) - algorithm , error detection and correction , phase (matter) , error analysis , phase shift module , computer science , optics , mathematics , physics , quantum mechanics
The detuning phase shift error is a common systematic error observed in temporal phase shifting (TPS) algorithms. This error, generally due to miscalibration of the phase shifter, is solved by using a quadrature filter insensitive to this detuning error. To compare algorithms, this error is frequently analyzed numerically. However, in this work we present an exact and analytical expression to calculate such error which is applicable to any kind of filters with real or complex frequency response. Finally, a table with the detuning error for several algorithms is reported.