RT Journal Article T1 Characterization of FDTD artifacts and modes in photonic crystals A1 López Alonso, José Manuel A1 Rico García, José María A1 Alda Serrano, Javier AB FDTD algorithms are being used as a numeric tool for the analysis of photonic crystals. The definition of the modes associated with them is of interest for the study of the capabilities of photonic crystal devices. The Principal Component Analysis (PCA) has been applied here to a sequence of images corresponding to the electromagnetic fields obtained from the FDTD simulations. PCA has revealed and quantified the importance of the modes appearing in the photonic crystals. The capability of PCA to produce spatial structures, or maps, associated with temporal evolutions has made possible the calculation of the modulus and phase of the modes existing in the photonic crystal. Some other modes, contributing with an almost negligible amount to the total variance of the original data, are also revealed by the method. Besides, PCA has been used to quantify the contribution of the numerical noise of the algorithm and to identify the effect of artifacts related with the matching of the computational grid and the inner geometry of the photonic crystal. PB SPIE SN 0-8194-5571-7 SN 0277-786X YR 2004 FD 2004-11-30 LK https://hdl.handle.net/20.500.14352/51659 UL https://hdl.handle.net/20.500.14352/51659 LA eng NO López Alonso, J. M., Rico García, J. M., Alda Serrano, J. «Characterization of FDTD artifacts and modes in photonic crystals». Integrated Optical Devices, Nanostructures, and Displays, vol. 5618, SPIE, 2004, pp. 39-47. www.spiedigitallibrary.org, https://doi.org/10.1117/12.578948. NO Prooceedings of SPIE 5618: Conference on Integrated Optical Devices, Nanostructures, and Displays, 39 (ISBN: 0-8194-5571-7) NO Ministerio de Ciencia, Innovación y Universidades (España) DS Docta Complutense RD 5 abr 2025