IEEE Photonics Technology Letters · 2004 · 30 citations · 5 references
EngineeringElectrical EngineeringMicroelectronicsPhotonicsSemiconductor DevicesHigh-frequency Semiconductor DevicesIntegrated Circuit DesignPhotonic Integrated CircuitsWaveguidesField MatchingIntegrated Waveguide CircuitsMismatchWaveguide DesignWaveguide FabricationWaveguide JunctionsWaveguide LossWaveguide Splitters
A novel approach to an ultralow-loss Y junction is introduced and designed. By adding a succession of low index regions with properly chosen parameters in the straight waveguide before the branching region, the field mismatch is improved with a power presplitting effect. In order to show that effect we fabricated, tested, and compared 1 /spl times/ 8 splitters formed by cascaded conventional Y branches and the proposed field matching Y branch.
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