Quiroga Mellado, Juan AntonioServín Guirado, ManuelEstrada, Julio César2023-06-202023-06-202009-02-150146-959210.1364/OL.34.000413https://hdl.handle.net/20.500.14352/43981© 2009 Optical Society of America.We show a practical way for building wideband phase-shifting algorithms for interferometry. The idea presented combines first- and second-order quadrature filters to obtain wideband phase-shifting algorithms. These first- and second-order quadrature filters are analogous to the first- and second-order filters commonly used in communications engineering, named building blocks. We present a systematic way to develop phase-shifting algorithms with large detuning robustness or large bandwidth. In general, the approach presented here gives a powerful frequency analysis and design tool for phase-shifting algorithms robust to detuning for interferometry.engjournal articlehttp://dx.doi.org/10.1364/OL.34.000413http://www.opticsinfobase.org/open access535OpticsÓptica (Física)2209.19 Óptica Física