Binary blazed grating-based polarization-independent filter on silicon on insulator

Abstract

In this paper, a binary blazed grating-based polarization independent filter on silicon on insulator (SOI) under full conical incidence is presented. The properties of the grating filter are investigated by rigorous coupled-wave analysis. It’s shown that the filter demonstrates high reflectivity (R>99%) at its resonant wavelength, which stays the same under three different polarization states. It indicates that this grating filter is polarization-independent. The final data shows its polarization-dependent loss (PDL) is only 0.04 dB and the full width at half maximums (FWHMs) of the transverse electric (TE-) and transverse magnetic (TM-) polarized light are 0.24 and 0.46 nm, respectively.

Keywords

narrow filter / binary blazed grating / full conical incidence / polarization-independent

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Acknowledgements

This work was partially supported by the National Natural Science Foundation of China (Grant No. 61177058), and the National High Technology Research and Development Program of China (No. 2011AA010302)

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg