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Liquid core modal interferometer integrated with silica waveguides

Liquid core modal interferometer integrated with silica waveguides

Authors :
Christopher J. Ledderhof
Claire L. Callender
Julian P. Noad
Patrick Dumais
Source :
IEEE Photonics Technology Letters. 18:746-748
Publication Year :
2006
Publisher :
Institute of Electrical and Electronics Engineers (IEEE), 2006.

Abstract

An integrated structure is demonstrated as a refractive index sensor. The structure consists of a liquid-filled elliptical microchannel embedded in silica glass and integrated with waveguides. The microchannel features entry points that are open to the top surface of the device and distinct from the optical input. The structure allows light to couple from a solid-core input waveguide to the liquid-core waveguide formed by the microchannel, and back to a solid-core output waveguide. Bimodal interference allows the structure to be sensitive to the refractive index of the liquid, with a full beat corresponding to a refractive index change of /spl sim/10/sup -4/. The structure allows the direct integration of optical fluids with silica waveguides for sensing and optical processing applications.

Details

ISSN :
10411135
Volume :
18
Database :
OpenAIRE
Journal :
IEEE Photonics Technology Letters
Accession number :
edsair.doi...........744b526f35417d2bc19d8ed99380ff68
Full Text :
https://doi.org/10.1109/lpt.2006.871109