Applied Physics B

, Volume 99, Issue 3, pp 519–524

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

Authors

  • H. Wu
    • State Key Laboratory of Advanced Optical Communication Systems and NetworksPeking University
    • Wuhan National Laboratory for OptoelectronicsHuazhong University of Science & Technology
  • J. Hou
    • State Key Laboratory of Advanced Optical Communication Systems and NetworksPeking University
    • Wuhan National Laboratory for OptoelectronicsHuazhong University of Science & Technology
  • W. Mo
    • State Key Laboratory of Advanced Optical Communication Systems and NetworksPeking University
    • Wuhan National Laboratory for OptoelectronicsHuazhong University of Science & Technology
  • D. Gao
    • Wuhan National Laboratory for OptoelectronicsHuazhong University of Science & Technology
    • State Key Laboratory of Advanced Optical Communication Systems and NetworksPeking University
    • School of Electrical and Computer EngineeringGeorgia Institute of Technology
Article

DOI: 10.1007/s00340-010-3917-x

Cite this article as:
Wu, H., Hou, J., Mo, W. et al. Appl. Phys. B (2010) 99: 519. doi:10.1007/s00340-010-3917-x

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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Copyright information

© Springer-Verlag 2010