Ultra Low Loss Waveguide Transitions for Reticle-Scale Silicon Nanophotonic Routing

We report compact and low loss silicon nanophotonic waveguide transitions, to connect different cross-sections of routing waveguide in large photonic integrated circuits. 25-μm-long tapers shaped as a stretched sinusoid had 0.029 ± 0.002 dB absolute loss between single-mode strip and multi-mode rib...

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Bibliographic Details
Published in:IEEE photonics technology letters 2017-12, Vol.29 (23), p.2099-2102
Main Authors: Jia Jiang, Goodwill, Dominic J., Dumais, Patrick, Celo, Dritan, Chunshu Zhang, Ming Li, Yuming Wei, Fei Zhao, Wanyuan Liu, Xin Tu, Dongyu Geng, Bernier, Eric
Format: Article
Language:English
Subjects:
Adapters
Integrated circuits
Loss measurement
Optical losses
Optical waveguides
photonic integrated circuits
Photonics
Propagation losses
Shape
Silicon
silicon photonics
Waveguide transitions
Waveguides
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Summary:We report compact and low loss silicon nanophotonic waveguide transitions, to connect different cross-sections of routing waveguide in large photonic integrated circuits. 25-μm-long tapers shaped as a stretched sinusoid had 0.029 ± 0.002 dB absolute loss between single-mode strip and multi-mode rib waveguides. 10-μm-long adapters of concave elliptic shape had 0.002 ± 0.001 dB absolute loss between singlemode strip and rib waveguides, the lowest reported loss for such adapters.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2017.2764450