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Proceedings Paper

In-fibre Mach-Zehnder configuration based on fibre multimode interference structure combined with a long period grating
Author(s): O. Frazão; J. Viegas; P. Caldas; F. M. Araújo; L. A. Ferreira; J. L. Santos; F. Farahi
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Paper Abstract

A novel Mach-Zehnder interferometer based on a fibre multimode interference structure combined with a long period fibre grating is proposed. The multimode interference is achieved through the use of a multimode fibre section spliced between two single-mode fibres, with a length adjusted to couple a fraction of light into the cladding modes. A LPG placed after the multimode fibre couples light back into the fibre core completing the Mach-Zehnder interferometer. This novel configuration was demonstrated as a bending sensor.

Paper Details

Date Published: 2 July 2007
PDF: 4 pages
Proc. SPIE 6619, Third European Workshop on Optical Fibre Sensors, 66192H (2 July 2007); doi: 10.1117/12.738610
Show Author Affiliations
O. Frazão, INESC Porto (Portugal)
Univ. do Porto (Portugal)
J. Viegas, INESC Porto (Portugal)
Univ. do Porto (Portugal)
P. Caldas, INESC Porto (Portugal)
Univ. do Porto (Portugal)
F. M. Araújo, INESC Porto (Portugal)
L. A. Ferreira, INESC Porto (Portugal)
J. L. Santos, INESC Porto (Portugal)
Univ. do Porto (Portugal)
F. Farahi, Univ. of North Carolina at Charlotte (United States)


Published in SPIE Proceedings Vol. 6619:
Third European Workshop on Optical Fibre Sensors

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