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Ultralow-loss 1 × 8 splitter based on field matching Y junction

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2 Author(s)
Gamet, J. ; Opsitech, S.A., Grenoble, France ; Pandraud, G.

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 × 8 splitters formed by cascaded conventional Y branches and the proposed field matching Y branch.

Published in:

Photonics Technology Letters, IEEE  (Volume:16 ,  Issue: 9 )