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Simulation of an Ultra-Compact Multimode Interference Power Splitter Based on Kerr Nonlinear Effect

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2 Author(s)
Mehdi Tajaldini ; Sch. of Phys., Univ. Sains Malaysia, Georgetown, Malaysia ; Mohd Zubir Mat Jafri

We propose an ultra-compact multimode interference (MMI) power splitter based on the Kerr nonlinear effect from simulations using modal propagation analysis. Crystalline polydiacetylene is used as the core layer to allow for the creation of a power splitter with a high number of outputs with the shortest possible multimode waveguide length operating in the nonlinear regime. The 11 high-contrast, high-resolution images at the end of the multimode waveguide in the simulated power splitter have a high power balance, whereas access to a high number of self-images is not possible under the linear regime in the proposed length range. The compact dimensions and ideal performance of the device are established according to optimized parameters. The proposed regime can be extended to the design of M × N power splitters. The results of this study indicate that nonlinear modal propagation analysis solves the miniaturization problem for all-optical devices based on MMI couplers to achieve multiple functions in a compact planar integrated circuit and also overcomes the limitations of previously proposed methods for nonlinear MMI. The results are verified using a numerical method.

Published in:

Journal of Lightwave Technology  (Volume:32 ,  Issue: 7 )