Frontiers of Optoelectronics, Volume. 6, Issue 2, 175(2013)
Reflected-intensity distribution of angle-tuned thin film filter based on frequency recursive algorithm
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.
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Kan YU, Juanjuan YIN, Jiaqi BAO. Reflected-intensity distribution of angle-tuned thin film filter based on frequency recursive algorithm[J]. Frontiers of Optoelectronics, 2013, 6(2): 175
Category: RESEARCH ARTICLE
Received: Jan. 6, 2013
Accepted: Feb. 22, 2013
Published Online: Mar. 3, 2014
The Author Email: YU Kan (onlyfish@126.com)