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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 29 — Oct. 10, 2013
  • pp: 7194–7199

Measurement of the phase shift between intensity and frequency modulations within DFB-LD and its influences on PGC demodulation in a fiber-optic sensor system

Kai Wang, Min Zhang, Fajie Duan, Shangran Xie, and Yanbiao Liao  »View Author Affiliations

Applied Optics, Vol. 52, Issue 29, pp. 7194-7199 (2013)

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The parameters of the semiconductor laser source are vital for the performances of optical coherent systems. In this paper, a novel method to measure the phase-shift φm between laser central optical-frequency modulation (COFM) and the accompanied optical-intensity modulation (AOIM) is proposed, which is easy to realize and requires no further fiber etalons or high-speed demodulators. An orthogonal test is utilized to measure φm. Experimental results show that the value of φm approaches 1.09π under different COFM conditions. Then the interference model of phase-generated carrier (PGC) demodulation is modified by taking into account the effect of φm, and the influences of φm on the demodulation results using two methods (look-up table and AOIM-factor division) are further analyzed in detail.

© 2013 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(300.6260) Spectroscopy : Spectroscopy, diode lasers

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: July 25, 2013
Revised Manuscript: September 11, 2013
Manuscript Accepted: September 14, 2013
Published: October 10, 2013

Kai Wang, Min Zhang, Fajie Duan, Shangran Xie, and Yanbiao Liao, "Measurement of the phase shift between intensity and frequency modulations within DFB-LD and its influences on PGC demodulation in a fiber-optic sensor system," Appl. Opt. 52, 7194-7199 (2013)

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  1. C. K. Kirkendall and A. Dandridge, “Overview of high-performance fiber-optic sensing,” J. Phys. D 37, R197–R216 (2004). [CrossRef]
  2. M. Zhang, X. H. Ma, L. W. Wang, S. R. Lai, H. P. Hong, H. F. Zhao, and Y. B. Liao, “Progress of optical fiber sensors and its application in harsh environment,” Photon. Sens. 1, 84–89 (2011).
  3. C. D. Tian, L. W. Wang, M. Zhang, H. Y. Zhang, X. H. Chu, S. R. Lai, and Y. B. Liao, “Performance improvement of PGC method by using lookup table for optical seismometer,” Proc. SPIE 7503, 750348 (2009). [CrossRef]
  4. Y. Liu, L. W. Wang, C. D. Tian, M. Zhang, and Y. B. Liao, “Analysis and optimization of the PGC method in all digital demodulation systems,” J. Lightwave Technol. 26, 3225–3233 (2008). [CrossRef]
  5. H. Y. Zhang, M. Zhang, L. W. Wang, Y. B. Liao, D. N. Wang, and Y. Q. Zhu, “An improved PGC demodulation method to suppress the impact of laser intensity modulation,” Proc. SPIE 8199, 1–8 (2011).
  6. S. C. Huang, Y. F. Huang, and Z. Z. Wu, “Sensitivity normalization technique of PGC demodulation with low harmonic distortion and high stability using laser modulation to generate carrier signal,” Sens. Actuators A 174, 198–206 (2012). [CrossRef]
  7. Q. P. Shi, Q. Tian, L. W. Wang, C. D. Tian, H. Y. Zhang, M. Zhang, Y. B. Liao, H. H. Wang, X. Zeng, and L. J. Huang, “Performance improvement of phase-generated carrier method by eliminating laser-intensity modulation for optical seismometer,” Opt. Eng. 49, 1–6 (2010).
  8. S. Schilt, L. Thévenaz, and P. Robert, “Wavelength modulation spectroscopy: combined frequency and intensity laser modulation,” Appl. Opt. 42, 6728–6738 (2003). [CrossRef]
  9. J. Wang, M. Maiorov, D. S. Baer, D. Z. Garbuzov, J. C. Connolly, and R. K. Hanson, “In situ combustion measurements of CO with diode-laser absorption near 2.3 μm,” Appl. Opt. 39, 5579–5589 (2000). [CrossRef]
  10. L. C. Philippe and R. K. Hanson, “Laser diode wavelength-modulation spectroscopy for simultaneous measurement of temperature, pressure, and velocity in shock-heated oxygen flows,” Appl. Opt. 32, 6090–6103 (1993). [CrossRef]
  11. H. J. Li, G. B. Rieker, X. Liu, J. B. Jeffries, and R. K. Hanson, “Extension of wavelength-modulation spectroscopy to large modulation depth for diode laser absorption measurements in high-pressure gases,” Appl. Opt. 45, 1052–1061 (2006). [CrossRef]
  12. K. Yin, H. P. Zhou, M. Zhang, T. H. Ding, S. R. Lai, L. W. Wang, and Y. B. Liao, “Optimization design of the pressure phase sensitivity of the fiber-optic air-backed mandrel hydrophone,” Proc. SPIE 7004, 700414 (2008). [CrossRef]

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