Polarization independent broadband reflectors based on cross-stacked gratings.


We report here a broadband reflector based on a two cross-stacked grating structure. This type of broadband reflector is polarization-independent, with ~100% reflectance over a designed spectral range of 1.4 to 1.6 μm. The reflection phase differences between TE and TM polarizations remain almost a constant value of 1.2π over the same high reflection… (More)
DOI: 10.1364/OE.19.009050

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