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Proceedings Paper

Low-loss spiral waveguides with ultra-small footprint on a micron scale SOI platform
Author(s): Matteo Cherchi; Sami Ylinen; Mikko Harjanne; Markku Kapulainen; Tapani Vehmas; Timo Aalto
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Paper Abstract

We have recently characterized spirals waveguides based on 4 μm thick strip waveguides with suitably designed lowloss micron scale bends. Different bends and different lengths have been tested to extrapolate propagation losses and bending losses. In particular lowest bending losses have been found to be smaller than 0.01 dB per turn, while propagation losses are about 0.15 dB/cm. Very small footprint is achieved thanks to a novel bend concept combined to waveguide pitches of a few microns. The unique properties of our waveguides make our platform the ideal one for low loss long spiral waveguides with very small footprint.

Paper Details

Date Published: 8 March 2014
PDF: 7 pages
Proc. SPIE 8990, Silicon Photonics IX, 899005 (8 March 2014); doi: 10.1117/12.2039940
Show Author Affiliations
Matteo Cherchi, VTT Technical Research Ctr. of Finland (Finland)
Sami Ylinen, VTT Technical Research Ctr. of Finland (Finland)
Mikko Harjanne, VTT Technical Research Ctr. of Finland (Finland)
Markku Kapulainen, VTT Technical Research Ctr. of Finland (Finland)
Tapani Vehmas, VTT Technical Research Ctr. of Finland (Finland)
Timo Aalto, VTT Technical Research Ctr. of Finland (Finland)


Published in SPIE Proceedings Vol. 8990:
Silicon Photonics IX
Joel Kubby; Graham T. Reed, Editor(s)

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