All-fiber Mach-Zehnder curvature sensor based on multimode interference combined with a long-period grating

O. Frazão, J. Viegas, P. Caldas, J. L. Santos, F. M. Araújo, L. A. Ferreira, F. Farahi

Research output: Contribution to journalArticlepeer-review

159 Scopus citations

Abstract

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

Original languageBritish English
Pages (from-to)3074-3076
Number of pages3
JournalOptics Letters
Volume32
Issue number21
DOIs
StatePublished - 1 Nov 2007

Fingerprint

Dive into the research topics of 'All-fiber Mach-Zehnder curvature sensor based on multimode interference combined with a long-period grating'. Together they form a unique fingerprint.

Cite this