OSA's Digital Library

Optics Letters

Optics Letters


  • 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)

View Full Text Article

Enhanced HTML    Acrobat PDF (415 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



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

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

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)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. A. M. Vengsarkar, P. Lemaire, J. B. Judkins, V. Bhatia, T. Erdogan, and J. E. Sipe, J. Lightwave Technol. 14, 58 (1996). [CrossRef]
  2. X. J. Gu, Opt. Lett. 23, 509 (1998). [CrossRef]
  3. P. L. Swart, Meas. Sci. Technol. 15, 1576 (2004). [CrossRef]
  4. X. Dong, L. Su, P. Shum, Y. Chung, and C. C. Chan, Opt. Commun. 258, 159 (2005). [CrossRef]
  5. O. Frazão, R. Falate, J. L. Fabris, J. L. Santos, L. A. Ferreira, and F. M. Araújo, Opt. Lett. 31, 2960 (2006). [CrossRef] [PubMed]
  6. K. Kawano and T. Kitoh, Introduction to Optical Waveguide Analysis (Wiley, 2001), Chap. 5, pp. 165-230. [CrossRef]
  7. H. Kakiuchida, K. Saito, and A. J. Ikushima, Jpn. J. Appl. Phys. Part 1 43L 743(2004).
  8. G. Rego, P. V. S. Marques, J. L. Santos, and H. M. Salgado, Fiber Integr. Opt. 24, 245 (2005). [CrossRef]
  9. W. Du, H. Tam, M. Liu, and X. Tao, Proc. SPIE 3330, 284 (1998). [CrossRef]
  10. J. L. Brooks, R. H. Wentworth, R. C. Youngquist, M. Tur, B. Y. Kim, and H. J. Shaw, J. Lightwave Technol. 5, 1062 (1985). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


Fig. 1 Fig. 2 Fig. 3
Fig. 4

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited