OSA's Digital Library

Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 29 — Oct. 10, 2012
  • pp: 6962–6967

Improved phase generated carrier demodulation algorithm for eliminating light intensity disturbance and phase modulation amplitude variation

Youwan Tong, Hualin Zeng, Liyan Li, and Yan Zhou  »View Author Affiliations

Applied Optics, Vol. 51, Issue 29, pp. 6962-6967 (2012)

View Full Text Article

Enhanced HTML    Acrobat PDF (546 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



In this paper we propose a novel, improved, phase generated carrier (PGC) demodulation algorithm based on the PGC-differential-cross-multiplying approach (PGC-DCM). The influence of phase modulation amplitude variation and light intensity disturbance (LID) on traditional PGC demodulation algorithms is analyzed theoretically and experimentally. An experimental system for remote no-contact microvibration measurement is set up to confirm the stability of the improved PGC algorithm with LID. In the experiment, when the LID with a frequency of 50 Hz and the depth of 0.3 is applied, the signal-to-noise and distortion ratio (SINAD) of the improved PGC algorithm is 19 dB, higher than the SINAD of the PGC-DCM algorithm, which is 8.7 dB.

© 2012 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

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: June 26, 2012
Revised Manuscript: September 4, 2012
Manuscript Accepted: September 4, 2012
Published: October 5, 2012

Youwan Tong, Hualin Zeng, Liyan Li, and Yan Zhou, "Improved phase generated carrier demodulation algorithm for eliminating light intensity disturbance and phase modulation amplitude variation," Appl. Opt. 51, 6962-6967 (2012)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. T. Suzuki, O. Sasaki, K. Higuchi, and T. Maruyama, “Real time displacement measurement in sinusoidal phase modulating interferometry,” Appl. Opt. 28, 5270–5274 (1989). [CrossRef]
  2. C. K. Kirkendall and A. Dandridge, “Overview of high performance fiber-optic sensing,” J. Phys. D 37, R197–R216 (2004). [CrossRef]
  3. A. Dandridge, A. B. Tveten, and T. G. Giallorenzi, “Homodyne demodulation scheme for fiber optic sensors using phase generated carrier,” IEEE J. Quantum Electron. 18, 1647–1653 (1982). [CrossRef]
  4. 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). [CrossRef]
  5. 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]
  6. P. T. R. Christian and B. H. Houston, “Real-time analog and digital demodulator for interferometric fiber optic sensors,” Proc. SPIE 2191, 324–336 (1994). [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, 024402 (2010). [CrossRef]
  8. L. W. Wang, M. Zhang, X. H. Mao, and Y. B. Liao, “The arctangent approach of digital PGC demodulation for optic interferometric sensors,” Proc. SPIE 6292, 62921E (2006).
  9. S. C. Huang and H. Lin, “Modified phase-generated carrier demodulation compensated for the propagation delay of the fiber,” Appl. Opt. 46, 7594–7603 (2007). [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