Birefringence compensated silicon nanowire arrayed waveguide grating for CWDM optical interconnects

We demonstrate an arrayed waveguide grating based on silicon nanowires with birefringence compensation for optical interconnects using coarse wavelength division multiplexing (CWDM). Angled star couplers are employed in combination with different diffraction orders for TM and TE polarizations. This...

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Veröffentlicht in:	Optics letters 2014-04, Vol.39 (7), p.1834-1837
Hauptverfasser:	Zou, Jun, Xia, Xiang, Chen, Guanting, Lang, Tingting, He, Jian-Jun
Format:	Artikel
Sprache:	eng
Schlagworte:	Birefringence Diffraction gratings Gratings (spectra) Nanowires Noise levels Optical interconnects Polarization Silicon Waveguides
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container_end_page	1837
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container_title	Optics letters
container_volume	39
creator	Zou, Jun Xia, Xiang Chen, Guanting Lang, Tingting He, Jian-Jun
description	We demonstrate an arrayed waveguide grating based on silicon nanowires with birefringence compensation for optical interconnects using coarse wavelength division multiplexing (CWDM). Angled star couplers are employed in combination with different diffraction orders for TM and TE polarizations. This device has a compact footprint of 0.36 mm×0.17 mm. Theoretical and experimental results show that the polarization-dependent wavelength shifts (PDλ) can be reduced from 380-420 to 0.5-3.5 nm, below 25% of the 3 dB bandwidth of channel response. The measured cross talk for TM polarization is better than -18 dB, and that for TE is better than -14 dB.
doi_str_mv	10.1364/OL.39.001834
format	Article
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subjects	Birefringence Diffraction gratings Gratings (spectra) Nanowires Noise levels Optical interconnects Polarization Silicon Waveguides
title	Birefringence compensated silicon nanowire arrayed waveguide grating for CWDM optical interconnects
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