Rigorous comparison of parabolically tapered and conventional multimode-interference-based 3-dB power splitters in InGaAsP/InP waveguides |
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| Authors: | Themistos Christos Rajarajan Muttukrishnan Rahman B M Azizur Obayya Salah S A Grattan Kenneth T V |
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| Affiliation: | Photonics Research Group, School of Engineering, City University, Northampton Square, London EC1V 0HB, United Kingdom. |
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| 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. |
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