Low loss mode size converter from 0.3 µm square Si wire waveguides to singlemode fibres

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© IEE
Published 28/07/2012

Abstract

A novel integrated mode size converter for single-mode Si wire waveguides is presented. The mode size converter is constructed with two-dimensional tapered Si waveguides and overlaid high-index polymer waveguides. We calculated the proposed mode size converter characteristics, and fabricated 1.09 mm length Si wire waveguides with the converters. The measured loss of the mode size converter was 0.8 dB per conversion, and the total insertion loss through the sample with an Si wire waveguide was 3.5 dB.

Inspec keywords: optical losses; silicon; optical fibre couplers; optical fabrication; silicon-on-insulator; integrated optics

Other keywords: integrated mode size converter; 0.3 μm square Si wire waveguides; two-dimensional tapered Si waveguides; integrated optical circuits; connecting device; low loss mode size converter; 3.5 dB; 0.3 micron; Si; overlaid high-index polymer waveguides; singlemode fibres; 0.8 dB; total insertion loss; 1.09 mm

Subjects: Integrated optics; Fibre couplers and connectors; Optical waveguides; Integrated optics; Fibre optics; Optical fabrication, surface grinding; Optical waveguides and couplers

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