OSA's Digital Library

Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 12 — Jun. 14, 2004
  • pp: 2656–2661

Signal to noise and range enhancement of a Brillouin intensity based temperature sensor

K. De Souza and T. P. Newson  »View Author Affiliations

Optics Express, Vol. 12, Issue 12, pp. 2656-2661 (2004)

View Full Text Article

Enhanced HTML    Acrobat PDF (110 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



We report on the theory and use of pre-amplification to enhance the measurement range of a spontaneous Brillouin intensity based distributed fiber-optic sensor. One factor that limits temperature resolution is receiver sensitivity, which degrades for long range sensors. Using optical preamplification before photodetection in a 23km sensor improved the signal-to-noise by approximately 17dB using a 20MHz detector. The major source of noise was amplified spontaneous emission beat noise.

© 2004 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(290.5830) Scattering : Scattering, Brillouin
(290.5870) Scattering : Scattering, Rayleigh

ToC Category:
Research Papers

Original Manuscript: April 30, 2004
Revised Manuscript: May 31, 2004
Published: June 14, 2004

K. De Souza and T. Newson, "Signal to noise and range enhancement of the Brillouin intensity based temperature sensor," Opt. Express 12, 2656-2661 (2004)

Sort:  Journal  |  Reset  


  1. K. De Souza, G. P. Lees, P.C. Wait, and T. P. Newson, �?? A diode-pumped Landau-Placzek based distributed temperature sensor utilising an all-fibre Mach-Zehnder interferometer,�?? Electron. lett. 33, 2174 -2196, (1996) [CrossRef]
  2. M. Gold, �??Design of long-range single mode OTDR,�?? J. Lightwave. Technol. 3, 38-43, (1985) [CrossRef]
  3. E. Desurvire, Erbium-doped fiber amplifiers, (John Wiley & sons, 1994) 207-305
  4. R. M. Howard, R. D. Jeffery, �?? On the noise of high-transimpedance amplifiers,�?? Opt. Quantum Electron. 19, 123-129, (1987) [CrossRef]
  5. P. Morkel, R. I. Laming, �??Theoretical modelling of erbium-doped fiber amplifiers with excited-state absorption,�?? Opt. Lett. 14, 1062-1064, (1989) [CrossRef] [PubMed]
  6. K. De Souza, T. P. Newson, �??Improvement of signal-to-noise capabilities of a distributed temperature sensor using optical preamplification,�?? Meas. Sci. Technol., 12, 952-957, (2001)
  7. K. De Souza, P.C. Wait and T. P. Newson, �??A double-pass configured Mach-Zehnder interferometric optical filter for distributed sensing,�?? Electron. lett. 33, 2148 -2150, (1997) [CrossRef]
  8. Y.T. Cho, M. N. Alahabi, M. J. Gunning and T. P. Newson, �??50km single-ended spontaneous Brillouin-based distributed temperature sensor exploiting pulsed Raman amplification,�?? Opt. Lett. 28, 1651-1653, (2003) [CrossRef] [PubMed]

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.


Fig. 1. Fig. 2. Fig. 3.
Fig. 4.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited