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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 29, Iss. 9 — Mar. 20, 1990
  • pp: 1323–1326

Incoherent frequency modulated cw optical reflectometry with centimeter resolution

Shalini Venkatesh and David W. Dolfi  »View Author Affiliations


Applied Optics, Vol. 29, Issue 9, pp. 1323-1326 (1990)
http://dx.doi.org/10.1364/AO.29.001323


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Abstract

An incoherent, frequency modulated continuous wave optical reflectomer is described which utilizes a broadband LiNbO3 electrooptic modulator and slow photodiode for optical downconversion and detection, and a waveform recorder for digital spectrum analysis of the incoming signal. A two-point resolution of 6.8 cm in fiber is achieved. The dynamic range, defined as the location of the system noise floor relative to the maximum producible signal, is 50-dB optical.

© 1990 Optical Society of America

History
Original Manuscript: July 10, 1989
Published: March 20, 1990

Citation
Shalini Venkatesh and David W. Dolfi, "Incoherent frequency modulated cw optical reflectometry with centimeter resolution," Appl. Opt. 29, 1323-1326 (1990)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-29-9-1323


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References

  1. David W. Dolfi, M. Nazarathy, S. A. Newton, “5-mm Resolution Optical Frequency Domain Reflectometry Using a Coded Phase-Reversal Modulator,” Opt. Lett. 13, 678–680 (1988). [CrossRef] [PubMed]
  2. D. W. Dolfi, M. Nazarathy, “Optical Frequency Domain Reflectometry with High Sensitivity and Resolution Using Optical Synchronous Detection with Coded Modulators,” Elec. Lett. 25, 160–162 (1989). [CrossRef]
  3. A. J. Hymans, J. Lait, “Analysis of a Frequency Modulated Continuous-Wave Ranging System,” Proc. IEE, 107B, 365–372 (1960).
  4. D. Uttam, B. Culshaw, “Precision Time Domain Reflectometry in Optical Fiber Systems Using a Frequency Modulated Continuous Wave Ranging Technique,” IEEE/OSA J. Lightwave Technol. LT-3, 971–977 (1985). [CrossRef]
  5. R. I. MacDonald, “Frequency Domain Optical Reflectometer,” Appl. Opt. 20, 1840–1844 (1981). [CrossRef] [PubMed]
  6. See, for example, B. H. Kolner, D. W. Dolfi, “Intermodulation Distortion and Compression in an Integrated Electrooptic Modulator,” Appl. Opt. 26, 3676–3680 (1987) and references therein. [CrossRef] [PubMed]
  7. R. L. Jungerman, C. A. Johnsen, D. W. Dolfi, M. Nazarathy, “Coded Phase-Reversal LiNbO3 Modulator with Bandwidth Greater than 20 GHz,” Electron. Lett. 23, 172–174 (1987). [CrossRef]
  8. K. I. Mallalieu, “Investigation into the Optical Activation and Fibre Optic Multiplexed Interrogation of Vibrating Sensors,” PhD thesis, Dept. of Electronic and Electrical Engineering, University College, London, 1987.

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