• Frontiers of Optoelectronics
  • Vol. 6, Issue 2, 175 (2013)
Kan YU*, Juanjuan YIN, and Jiaqi BAO
Author Affiliations
  • Huazhong University of Science and Technology Wenhua College, Wuhan 430074, China
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    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
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    Received: Jan. 6, 2013
    Accepted: Feb. 22, 2013
    Posted: Feb. 1, 2013
    Published Online: Mar. 3, 2014
    The Author Email: YU Kan (onlyfish@126.com)