Title :
A broadband multilayered nonpolarization resonant reflector
Author :
Huang, L. ; Liang, D. ; Zeng, J. ; Xiao, Y. ; Wu, H.
Author_Institution :
State Key Lab. of Mech. & Control of Mech. Struct., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
A nonpolarization reflector constructed by a multilayered 1-D grating structure with a multisubpart profile is proposed and fabricated. Rigorous coupled-wave analysis for multilayered grating structure is adopted to theoretically investigate the properties of the structure. In addition, experimental verification of theoretical investigation is accomplished. It is shown that in both TE and TM polarized waves, the reflector experimentally demonstrates a wideband reflection spectrum from 1.65 to 1.72 μm, very high reflectivity (R > 97%), and good angular insensitivity of about 24.6°. Moreover, a reasonably good tolerance of fabrication error is also presented by numerical analysis of device performance degeneration resulting from parameter deviations.
Keywords :
coupled mode analysis; diffraction gratings; light polarisation; optical design techniques; optical multilayers; reflectivity; TE polarized waves; TM polarized waves; angular insensitivity; broadband multilayered nonpolarization resonant reflector; device performance degeneration; fabrication error tolerance; multilayered 1-D grating structure; multisubpart profile; numerical analysis; reflectivity; rigorous coupled- wave analysis; wideband reflection spectrum; Broadband communication; Gratings; Optical device fabrication; Optical polarization; Reflection; Reflectivity; Silicon; Multilayered design; leaky mode resonance (LMR); leaky mode resonance (LMR),; non-polarization reflector; nonpolarization reflector;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2015.2451650
