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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 13 — May. 1, 1999
  • pp: 2760–2766

Modified In-Line Sagnac Interferometer with Passive Demodulation Technique for Environmental Immunity of a Fiber-Optic Current Sensor

Hermann Lin, Wuu-Wen Lin, and Mao-Hsiung Chen  »View Author Affiliations


Applied Optics, Vol. 38, Issue 13, pp. 2760-2766 (1999)
http://dx.doi.org/10.1364/AO.38.002760


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Abstract

A modified in-line Sagnac interferometer (MISI) with passive demodulation Technique (PDT) was proposed to immunize the fiber-optic current sensor (FOCS) from environmental perturbations. A large vibration to simulate the environmental perturbations with acceleration up to 12 <i>g</i> was applied to the lead fiber of the FOCS. The noise floor could be significantly suppressed (20 dB) by the MISI better than by a conventional interferometer. In the same dynamic environments, the PDT could make the FOCS achieve a good linear demodulation with average distortion rates always lower than 0.9%. In addition, all the sensitivities measured in both static and dynamic environments are all approximately 4.5 μrad/(A<sub>rms</sub> turns), which is close to the literatural data measured in static environments. These considerable achievements of high sensitivity, environmental immunity, and free electric shock concerns may lead FOCS’s to field-monitoring applications of power delivery lines.

© 1999 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(230.2240) Optical devices : Faraday effect

Citation
Hermann Lin, Wuu-Wen Lin, and Mao-Hsiung Chen, "Modified In-Line Sagnac Interferometer with Passive Demodulation Technique for Environmental Immunity of a Fiber-Optic Current Sensor," Appl. Opt. 38, 2760-2766 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-13-2760


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References

  1. V. Annovazzi-Lodi and S. Donati, “Fiber current sensors for HV lines,” in Fiber Optic Sensors II, A. M. Scheggi, ed., Proc. SPIE 798, 270–274 (1987).
  2. T. W. MacDougall, D. R. Lutz, and R. A. Wandmacher, “Development of a fiber optic current sensor for power systems,” IEEE Trans. Power Delivery 7, 848–849 (1992).
  3. A. Papp and H. Harms, “Magnetooptical current transformer. 1. Principles,” Appl. Opt. 19, 3729–3745 (1980).
  4. S. Dontai, V. Annovazzi-Lodi, and T. Tambasso, “Magnetooptical fiber sensor for electrical industry analysis of performance,” Proc. Inst. Electr. Eng. 135, 372–382 (1988).
  5. P. A. Nicatti and P. Robert, “Stabilized current sensor using a Sagnac interferometer,” J. Phys. E 21, 791–796 (1988).
  6. J. Blake, P. Tantasnadi, and R. T. de Carvalho, “In-line Sagnac interferometer current sensor,” IEEE Trans. Power Delivery 11, 116–121 (1996).
  7. G. Frosio and R. Dandliker, “Reciprocal reflection interferometer for a fiber-optic Faraday current sensor,” Appl. Opt. 33, 6111–6122 (1994).
  8. P. R. Forman and F. C. Jahoda, “Linear birefringence effects on fiber-optic current sensors,” Appl. Opt. 27, 3088–3096 (1988).
  9. K. B. Rochford, G. W. Day, and P. R. Forman, “Polarization dependence of response functions in 3 × 3 Sagnac optical fiber current sensors,” J. Lightwave Technol. 12, 1504–1509 (1994).
  10. S. X. Short, P. Tantaswadi, R. T. de Carvalho, B. D. Russell, and J. Blake, “An experimental study of acoustic vibration effects in optical fiber current sensor,” IEEE Trans. Power Delivery 11, 1702–1706 (1996).
  11. H. Lin, W. W. Lin, M. H. Cheng, and S. C. Huang, “Fiber optic current sensor using passive demodulation interferometric scheme,” Fiber Integr. Opt. (to be published).
  12. A. Yariv and P. Yeh, Optical Waves in Crystals (Wiley, New York, 1984), pp. 103–104.
  13. R. Ulrich and A. Simon, “Polarization optics of twisted single-mode fibers,” Appl. Opt. 18, 2241–2251 (1979).
  14. S. C. Huang, W. W. Lin, and M. H. Chen, “Time-division multiplexing of polarization-insensitive fiber optic Michelson interferometer sensors,” Opt. Lett. 20, 1244–1246 (1995).
  15. S. C. Huang, W. W. Lin, M. H. Chen, and M. L. Chao, “Time division multiplexing of polarization-insensitive fiber optic Michelson interferometric sensors,” J. Lightwave Technol. 14, 1488–1500 (1996).
  16. S. C. Huang, W. W. Lin, and M. H. Chen, “Phase sensitivity normalization in time-division multiplexing of polarization insensitive interferometric sensors using phase-generated carrier demodulation,” Opt. Eng. 35, 2634–2640 (1996).
  17. S. C. Huang, W. W. Lin, and M. H. Chen, “Cross-talk analysis of time-division multiplexing of polarization-insensitive fiber- optic Michelson interferometric sensors with 3 × 3 directional coupler,” Appl. Opt. 36, 921–933 (1997).

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