Abstract

A novel optical fiber sensor used for remote monitoring of salinity in water is proposed. Based on the detection of beam deviation due to the refractive index changes of the salt water, salinity can be measured by a position-sensitive detector. The measurement principle is theoretically described. Preliminary prototype is set up, and experimental results indicate the feasibility of the method. Salinity measurement resolution can reach 0.012‰ within the measurement range from distilled water to salt water with salinity of 50‰.

© 2003 IEEE

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  1. Z. J. Min, J. P. Li and S. H. Jiang, "Measurement of salt salinity in solar pond by supersonic method", Acta Eneglae Solaris Sinica, vol. 16, no. 2, pp. 224-228, 1995.
  2. F. B. Diniz, K. C. S. de Freitas and W. M. de Azevedo, "Salinity measurements with polyaniline matrix coated wire electrodes", Electrochem. Commun., vol. 1, pp. 271-273, 1999.
  3. Y. Zhao, P. S. Li, C. S. Wang and Z. B. Pu, "A novel fiber-optic sensor used for small internal curved surface measurement", Sens. Actuators A, Phys., vol. 86, no. 3, pp. 211-215, 2000.
  4. Y. Zhao, P. S. Li and Z. B. Pu, "Shape measurement based on fiber-optic technique for complex internal surface", Measurement, vol. 30, no. 4, pp. 289-295, 2001.
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  6. Y. Zhao and Y. B. Liao, "Novel optical fiber sensor for simultaneous undersea temperature and salinity measurement", Sens. Actuators B, Chem., vol. 86, no. 1, pp. 63-67, 2002.
  7. Y. Miyake, "Chemical studies of the western pacific ocean IV: The refractive index of seawater", Bull. Chem. Soc. Japan, vol. 14, pp. 239-242, 1939.
  8. E. M. Stanley, "The refractive index of seawater as a function of temperature, pressure and two wavelengths", Deep Sea Res., vol. 18, pp. 833-840, 1971.
  9. J. S. Rusby, "Measurement of the refractive index of seawater relative to copenhagen standard seawater", Deep Sea Res., vol. 14, pp. 427-43, 1967.

Other (9)

Z. J. Min, J. P. Li and S. H. Jiang, "Measurement of salt salinity in solar pond by supersonic method", Acta Eneglae Solaris Sinica, vol. 16, no. 2, pp. 224-228, 1995.

F. B. Diniz, K. C. S. de Freitas and W. M. de Azevedo, "Salinity measurements with polyaniline matrix coated wire electrodes", Electrochem. Commun., vol. 1, pp. 271-273, 1999.

Y. Zhao, P. S. Li, C. S. Wang and Z. B. Pu, "A novel fiber-optic sensor used for small internal curved surface measurement", Sens. Actuators A, Phys., vol. 86, no. 3, pp. 211-215, 2000.

Y. Zhao, P. S. Li and Z. B. Pu, "Shape measurement based on fiber-optic technique for complex internal surface", Measurement, vol. 30, no. 4, pp. 289-295, 2001.

Y. Y. Jin, Z. X. Chen and Q. J. Wang, "Laser optic-fiber technique for measuring the salinity of a solar pond", Acta Eneglae Solaris Sinica, vol. 15, no. 2, pp. 198-200, 1994.

Y. Zhao and Y. B. Liao, "Novel optical fiber sensor for simultaneous undersea temperature and salinity measurement", Sens. Actuators B, Chem., vol. 86, no. 1, pp. 63-67, 2002.

Y. Miyake, "Chemical studies of the western pacific ocean IV: The refractive index of seawater", Bull. Chem. Soc. Japan, vol. 14, pp. 239-242, 1939.

E. M. Stanley, "The refractive index of seawater as a function of temperature, pressure and two wavelengths", Deep Sea Res., vol. 18, pp. 833-840, 1971.

J. S. Rusby, "Measurement of the refractive index of seawater relative to copenhagen standard seawater", Deep Sea Res., vol. 14, pp. 427-43, 1967.

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