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A broadband reflector using a multilayered grating structure with multi-subpart profile

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Abstract

In this paper, a broadband reflector exhibiting a flattened bandstop spectral response is proposed by using a multilayered grating structure possessing multi-subpart profile. It is shown that with the properly configured profile and a strongly modulated grating layer, in transverse electric (TE) polarized wave the presented reflector experimentally demonstrated a 240 nm-wide reflection spectrum from 1.56 to 1.8 μm, very high reflectivity (>97%), and a low sensitivity to incident angle at the range of −13.8°<θ<+14°. Effects of deviation from the design parameters on the performance of the reflector are also illustrated, and a reasonably good tolerance of fabrication error is exhibited in the proposed device.

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Authors and Affiliations

  1. State Key Laboratory of Advanced Optical Communication Systems and Networks, Peking University, Beijing, 100871, China

    H. Wu, J. Hou, W. Mo & Z. Zhou

  2. School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0250, USA

    Z. Zhou

  3. Wuhan National Laboratory for Optoelectronics, Huazhong University of Science & Technology, Wuhan, Hubei, 430074, China

    H. Wu, J. Hou, W. Mo & D. Gao

Authors
  1. H. Wu
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  2. J. Hou
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  3. W. Mo
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  4. D. Gao
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  5. Z. Zhou
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Correspondence to Z. Zhou.

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Wu, H., Hou, J., Mo, W. et al. A broadband reflector using a multilayered grating structure with multi-subpart profile. Appl. Phys. B 99, 519–524 (2010). https://doi.org/10.1007/s00340-010-3917-x

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  • DOI: https://doi.org/10.1007/s00340-010-3917-x

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