The design and simulation results of temperature-insensitive arrayed waveguide gratings based on silicon nanowires are presented. The temperature dependent wavelength shift is minimized by using negative thermo-optic coefficient material SU-8 as the upper-cladding. Simulation results show that by using an appropriate thickness and width of the waveguide, quasi-athermal operation can be achieved. For temperature varying from 0°C to 80°C, the TD-CWS can be controlled down to 0.036nm with little polarization dependence for 272nm×253nm waveguide.

© 2011 Optical Society of America

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