RT Journal Article T1 Importance of the phase and amplitude in the fractional Fourier domain A1 Alieva Krasheninnikova, Tatiana A1 Calvo Padilla, María Luisa AB The importance of the amplitude and phase in the fractional Fourier transform (FT) domain is analyzed on the basis of the rectangular signal and the real-world image. The quality of signal restoration from only the amplitude or from only the phase of its fractional FT by applying the inverse fractional FT is considered. It is shown that the signal reconstructed from the amplitude of the fractional FT usually reveals the main features of the original signal only for relatively low fractional orders. On the basis of phase information in the fractional FT domains, significant details of the signal can be obtained for nearly all fractional orders. PB Optical Society of America SN 0740-3232 YR 2003 FD 2003-03 LK https://hdl.handle.net/20.500.14352/51072 UL https://hdl.handle.net/20.500.14352/51072 LA eng NO © 2003 Optical Society of America.Financial assistance from the Spanish Ministry of Science and Technology (project TIC 2002-01846) is acknowledged. T. Alieva acknowledges the financial support of Secretaría de Estado de Educación y Universidades de España (SB2000-0166) (Spanish Ministry of Education, Culture, and Sports). NO Ministerio de Ciencia y Tecnología, España NO Secretaría de Estado de Educación y Universidades de España NO Ministerio de Educación, Cultura y Deporte (MECD), España DS Docta Complutense RD 7 abr 2025