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Published on: April 1, 2020
Rigorous comparison of parabolically tapered and conventional multimode-interference-based 3-dB power splitters in
Christos Themistos1, Muttukrishnan Rajarajan, B M Azizur Rahman
1Photonics Research Group, School of Engineering, City University, Northampton Square, London EC1V 0HB, United Kingdom.
Abstract:
Design issues such as optical transmission, interference mechanisms, the splitting ratio, the polarization dependence, and the fabrication tolerances of a compact parabolically tapered multimode-interference (MMI)-based 3-dB power splitter on an InP-based deeply etched ridge waveguide, by use of the finite-element-based beam-propagation method, are presented. The benefits and drawbacks of the use of the tapered structure, in comparison with an untapered MMI-based 3-dB splitter, have also been investigated.
