naa a22 4500 510729533 CHVBK 20180411082947.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s12200-013-0311-4 doi (NATIONALLICENCE)springer-10.1007/s12200-013-0311-4 Reflected-intensity distribution of angle-tuned thin film filter based on frequency recursive algorithm [Elektronische Daten] [Kan Yu, Juanjuan Yin, Jiaqi Bao] For a three-port angle-tuned thin film filter, the characteristic of reflected-port is very important to reflect multiple wavelengths spectrum. As the filter is in tilted incidence, the reflected-facula broadens and the reflectivity decreases. In this paper, we proposed a frequency recursive algorithm based on fast Fourier transform and Fresnel formula. The reflected-intensity distribution of the narrowband filter from normal incidence to 40° tilted incidence was simulated by this frequency recursive algorithm. Meanwhile, the beam field experiments were accordingly performed in this study. Compared with the traditional beam spatial superposition method, the frequency recursive algorithm is more efficient and precise in calculating the reflectivity of the reflected beam, suggesting the frequency recursive algorithm may be more helpful for fabricating the three-port tunable thin film filter. Higher Education Press and Springer-Verlag Berlin Heidelberg, 2013 thin film filter nationallicence recursive algorithm nationallicence tilted incidence nationallicence fast Fourier transform nationallicence Yu Kan Huazhong University of Science and Technology Wenhua College, 430074, Wuhan, China aut Yin Juanjuan Huazhong University of Science and Technology Wenhua College, 430074, Wuhan, China aut Bao Jiaqi Huazhong University of Science and Technology Wenhua College, 430074, Wuhan, China aut Frontiers of Optoelectronics SP Higher Education Press 6/2(2013-06-01), 175-179 2095-2759 6:2<175 2013 6 12200 https://doi.org/10.1007/s12200-013-0311-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12200-013-0311-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yu Kan Huazhong University of Science and Technology Wenhua College, 430074, Wuhan, China aut NATIONALLICENCE 700 1- Yin Juanjuan Huazhong University of Science and Technology Wenhua College, 430074, Wuhan, China aut NATIONALLICENCE 700 1- Bao Jiaqi Huazhong University of Science and Technology Wenhua College, 430074, Wuhan, China aut NATIONALLICENCE 773 0- Frontiers of Optoelectronics SP Higher Education Press 6/2(2013-06-01), 175-179 2095-2759 6:2<175 2013 6 12200 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer