Abstract
Based on the two-mode interference principle, a thermo-optic two-mode interference waveguide structure with heat-insulating grooves in both sides of the two-mode interference core has been proposed for optical switching. The thermal analysis of the proposed structure with SiON core and SiO2 cladding has been performed by the finite difference method. The switching power of the device is estimated as ∼450 mW, and the response time is estimated as ∼98 μs, which is eight times faster than that of the existing thermo-optic two-mode interference device. The device length of the switch is 2.7 times less than that of the existing total internal reflection (TIR) thermo-optic switch.
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