OSA's Digital Library

Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 11 — Apr. 10, 2010
  • pp: 2183–2189

Rotationally insensitive circular-core two-mode fiber-optic strain sensor

Sachin N. Dekate and Barry Grossman  »View Author Affiliations

Applied Optics, Vol. 49, Issue 11, pp. 2183-2189 (2010)

View Full Text Article

Enhanced HTML    Acrobat PDF (1351 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



Conventional two-mode fiber-optic strain sensors measure strain by inducing a path difference between the two propagating modes and spatially interfering the modal output pattern. At high strain values, the output mode pattern changes (rotates), limiting the range of measured strain. We have applied a mode separation/recombination technique and demonstrated it with a two-mode strain sensor, resulting in a rotationally invariant/stable output mode pattern and extended range of measured strain. The sensor was designed to measure strain, but with very little modification, it can measure temperature, pressure, electric and magnetic fields, etc. The improved rotationally invariant two-mode fiber-optic strain sensor performs to within 2% of standard electrical strain gauges.

© 2010 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.2430) Fiber optics and optical communications : Fibers, single-mode

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: November 30, 2009
Revised Manuscript: March 15, 2010
Manuscript Accepted: March 17, 2010
Published: April 7, 2010

Sachin N. Dekate and Barry Grossman, "Rotationally insensitive circular-core two-mode fiber-optic strain sensor," Appl. Opt. 49, 2183-2189 (2010)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. D. Gloge, “Weakly guiding fibers,” Appl. Opt. 10, 2252-2258(1971). [CrossRef] [PubMed]
  2. M. R. Layton and J. A. Bucaro, “Optical fiber acoustic sensor utilizing mode-mode interference,” Appl. Opt. 18, 666-670(1979). [CrossRef] [PubMed]
  3. A. Safaai-Jazi and J. C. McKeeman, “Synthesis of intensity patterns in few-mode optical fibers,” J. Lightwave Technol. 9, 1047-1052 (1991). [CrossRef]
  4. A. Safaai-Jazi and R. O. Claus, “Synthesis of interference patterns in few-mode optical fibers,” Proc. SPIE 986, 180-185 (1989).
  5. W. Q. Thornburg, B. J. Corrado, and X. D. Zhu, “Selective launching of higher-order modes into an optical fiber with an optical phase shifter,” Opt. Lett. 19, 454-456 (1994). [CrossRef] [PubMed]
  6. M. Spajer, B. Carquille, and H. Maillotte, “Application of intermodal interference to fibre sensors,” Opt. Commun. 60, 261-264 (1986). [CrossRef]
  7. K. Murphy, M. Miller, A. Vengsarkar, and R. Claus, “Elliptical-core two-mode optical-fiber sensor implementation methods,” J. Lightwave Technol. 8, 1688-1696 (1990). [CrossRef]
  8. C. D. Poole, J. M. Wiesenfeld, and D. J. DiGiovanni, “Elliptical-core dual-mode fiber dispersion compensator,” IEEE Photonics Technol. Lett. 5, 194-197 (1993). [CrossRef]
  9. M. Spajer, J. Rolland, and J. Neiras, “Separateurs de modes realises par abrasion d'une fibre optique utilisables dans des capteurs interferometriques,” Opto 89, Paris, 24-28 April 1989, pp. 71-74
  10. S. Shaklan, C. Froehly, and F. Reynaud, “Stellar Interferometer with multimode fiber optics,” Proc. SPIE 1319, 448-449 (1990). [CrossRef]
  11. S. Shaklan, “Selective mode injection and observation for few mode fiber optics,” Appl. Opt. 30, 4379-4383 (1991). [CrossRef] [PubMed]
  12. C. Hou, B. Grossman, S. Murshid, and M. Sokol, “Experimental determination of propagation constant using end-etched fiber,” Opt. Laser Technol. 35, 355-360 (2003). [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.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited