Abstract
In this paper, an optical pulse controlled 1×2 two mode interference (OTMI) coupler having silicon core and GaAsInP cladding has been introduced as NOT and AND gates. The coupling characteristics of OTMI coupler are analyzed by using a simple mathematical model based on sinusoidal modes. It is seen that the length of OTMI based logic gate is eight times lower than that of existing MMI coupler based logic gates and the effect of power imbalance on fabrication tolerances of the device is also less than that of MMI device.
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