Low-loss converters between optical silicon waveguides of different sizes and types

Low-loss converters between optical silicon waveguides of different sizes and types

Two types of low-loss converters between different optical waveguides on silicon-on-insulator are demonstrated. A vertical taper between 9.4- and 3.8-μm-thick single-moded rib waveguides gives an excess loss of 0.7/spl plusmn/0.2 dB with negligible polarization dependency. The second structure conve...

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Veröffentlicht in:IEEE photonics technology letters 2006-03, Vol.18 (5), p.709-711
Hauptverfasser: Aalto, T., Solehmainen, K., Harjanne, M., Kapulainen, M., Heimala, P.
Format: Artikel
Sprache:eng
Schlagworte:
Adiabatic conversion
Circuits
Converters
Epitaxial growth
Epitaxy
Etching
Integrated optics
multistep patterning
Noise levels
Optical refraction
Optical variables control
Optical waveguides
Polarization
Samarium
Silicon
silicon microphotonics
silicon waveguide
silicon-on-insulator (SOI) technology
Strips
Tolerances
vertical taper
Waveguides
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Beschreibung
Zusammenfassung:Two types of low-loss converters between different optical waveguides on silicon-on-insulator are demonstrated. A vertical taper between 9.4- and 3.8-μm-thick single-moded rib waveguides gives an excess loss of 0.7/spl plusmn/0.2 dB with negligible polarization dependency. The second structure converts a 9.7-μm-thick rib waveguide into an equally thick and highly multimoded strip waveguide with a negligible loss (
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2006.871150