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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 21 — Nov. 1, 2007
  • pp: 3074–3076

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, and F. Farahi  »View Author Affiliations


Optics Letters, Vol. 32, Issue 21, pp. 3074-3076 (2007)
http://dx.doi.org/10.1364/OL.32.003074


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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.

© 2007 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2370) Fiber optics and optical communications : Fiber optics sensors

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 31, 2007
Revised Manuscript: September 24, 2007
Manuscript Accepted: September 26, 2007
Published: October 15, 2007

Citation
O. Frazão, J. Viegas, P. Caldas, J. L. Santos, F. M. Araújo, L. A. Ferreira, and F. Farahi, "All-fiber Mach-Zehnder curvature sensor based on multimode interference combined with a long-period grating," Opt. Lett. 32, 3074-3076 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-21-3074

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