OSA's Digital Library

Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 27 — Sep. 20, 2010
  • pp: 5043–5048

Orientation-free pressure sensor based on π-shifted single-mode-fiber Sagnac interferometer

Jiulin Gan, Li Shen, Qing Ye, Zhengqing Pan, Haiwen Cai, and Ronghui Qu  »View Author Affiliations

Applied Optics, Vol. 49, Issue 27, pp. 5043-5048 (2010)

View Full Text Article

Enhanced HTML    Acrobat PDF (683 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



We propose and analyze a novel orientation-free pressure sensor based on a π-shifted all-single-mode-fiber (SMF) Sagnac interferometer. Compared with a conventional pressure sensor based on high-birefringence polarization-maintaining fiber, this all-SMF structure is more simple, stable, and economical. Because an initial π shift is introduced into the Sagnac loop by adjusting actively the polarization controller, the intensity response of the sensor is independent of the birefringence orientation associated with the device under test (DUT). This configuration not only eliminates the effect of an uncertain birefringence orientation in the fiber loop, it also exhibits excellent repeatability and high sensitivity, which will ease the following demodulation of the measurand. The Jones matrix method is used to analyze the orientation-free characteristic of this sensor, and some theoretical and experimental results are also given.

© 2010 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.5790) Instrumentation, measurement, and metrology : Sagnac effect
(260.1440) Physical optics : Birefringence

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: May 25, 2010
Revised Manuscript: August 12, 2010
Manuscript Accepted: August 14, 2010
Published: September 10, 2010

Jiulin Gan, Li Shen, Qing Ye, Zhengqing Pan, Haiwen Cai, and Ronghui Qu, "Orientation-free pressure sensor based on π-shifted single-mode-fiber Sagnac interferometer," Appl. Opt. 49, 5043-5048 (2010)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. V. Vali and R. W. Shorthill, “Fiber ring interferometer,” Appl. Opt. 15, 1099–1100 (1976). [CrossRef] [PubMed]
  2. V. Dangui, M. J. F. Digonnet, and G. S. Kino, “Laser-driven photonic-bandgap fiber optic gyroscope with negligible Kerr-induced drift,” Opt. Lett. 34, 875–877 (2009). [CrossRef] [PubMed]
  3. X. Fang, H. Ji, L. J. Pelz, and K. R. Demarest, “A DC to multigigabit/s polarization-independent modulator based on a Sagnac interferometer,” J. Lightwave Technol. 15, 2166–2171 (1997). [CrossRef]
  4. R. Qu, H. Zhao, Z. Fang, E. Martin, and J. P. Meunier, “Configurable wavelength-selective switch based on fiber grating and fiber loop mirror,” IEEE Photon. Technol. Lett. 12, 1343–1345 (2000). [CrossRef]
  5. F. Liu, Q. Ye, F. Pang, J. Geng, R. Qu, and Z. Fang, “Polarization analysis and experimental implementation of PLZT electro-optical switch using fiber Sagnac interferometers,” J. Opt. Soc. Am. B. 23, 709–713 (2006). [CrossRef]
  6. S. Knudsen and K. Blotekjaer, “An ultrasonic fiber-optic hydrophone incorporating a push–pull transducer in a Sagnac interferometer,” J. Lightwave Technol. 12, 1696–1700(1994). [CrossRef]
  7. A. N. Starodumov, L. A. Zenteno, D. Monzon, and E. De La Rosa, “Fiber Sagnac interferometer temperature sensor,” Appl. Phys. Lett. 70, 19–21 (1997). [CrossRef]
  8. Y. Liu, B. Liu, X. Feng, W. Zhang, G. Zhou, S. Yuan, G. Kai, and X. Dong, “High-birefringence fiber loop mirrors and their applications as sensors,” Appl. Opt. 44, 2382–2390 (2005). [CrossRef] [PubMed]
  9. O. Frazão, J. M. Baptista, and J. L. Santos, “Recent advances in high-birefringence fiber loop mirror sensors,” Sensors 7, 2970–2983 (2007). [CrossRef]
  10. H. Y. Fu, H. Y. Tam, L.-Y. Shao, X. Dong, P. K. A. Wai, C. Lu, and S. K. Khijwania, “Pressure sensor realized with polarization-maintaining photonic crystal fiber-based Sagnac interferometer,” Appl. Opt. 47, 2835–2839 (2008). [CrossRef] [PubMed]
  11. X. Dong, H. Y. Tam, and P. Shum, “Temperature-insensitive strain sensor with polarization maintaining photonic crystal fiber based Sagnac interferometer,” Appl. Phys. Lett. 90, 151113 (2007). [CrossRef]
  12. E. Simova and I. Golub, “π-shifted Sagnac interferometer for characterization of femtosecond first- and second-order polarization mode dispersion,” Opt. Lett. 27, 1681–1683 (2002). [CrossRef]
  13. D. B. Mortimore, “Fiber loop reflectors,” J. Lightwave Technol. 6, 1217–1224 (1988). [CrossRef]
  14. K. Wang, Z. Wei, H. Zhang, X. Huang, B. Chen, and H.-L. Cui, “Fiber-Bragg-grating-based weigh-in-motion system using fiber-reinforced composites as the load-supporting material,” Opt. Eng. 45, 064401 (2006). [CrossRef]
  15. S. Yuan, F. Ansari, X. Liu, and Y. Zhao, “Optic fiber-based dynamic pressure sensor for WIM system,” Sens. Actuators A, Phys. 120, 53–58 (2005). [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