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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 16 — Jul. 30, 2012
  • pp: 17695–17700

Long-distance fiber-optic point-sensing systems based on random fiber lasers

Z. N. Wang, Y. J. Rao, H. Wu, P. Y. Li, Y. Jiang, X. H. Jia, and W. L. Zhang  »View Author Affiliations


Optics Express, Vol. 20, Issue 16, pp. 17695-17700 (2012)
http://dx.doi.org/10.1364/OE.20.017695


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Abstract

We find that the random fiber laser (RFL) without point-reflectors is a temperature-insensitive distributed lasing system for the first time. Inspired by such thermal stability, we propose the novel concept of utilizing the RFL to achieve long-distance fiber-optic remote sensing, in which the RFL offers high-fidelity and long-distance transmission for the sensing signal. Two 100km fiber Bragg grating (FBG) point-sensing schemes based on RFLs are experimentally demonstrated using the first-order and the second-order random lasing, respectively, to verify the concept. Each sensing scheme can achieve >20dB optical signal-to-noise ratio (OSNR) over 100km distance. It is found that the second-order random lasing scheme has much better OSNR than that of the first-order random lasing scheme due to enhanced lasing efficiency, by incorporating a 1455nm FBG into the lasing cavity.

© 2012 OSA

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(140.3510) Lasers and laser optics : Lasers, fiber
(290.5870) Scattering : Scattering, Rayleigh
(290.5910) Scattering : Scattering, stimulated Raman
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Sensors

History
Original Manuscript: May 9, 2012
Revised Manuscript: July 15, 2012
Manuscript Accepted: July 16, 2012
Published: July 19, 2012

Citation
Z. N. Wang, Y. J. Rao, H. Wu, P. Y. Li, Y. Jiang, X. H. Jia, and W. L. Zhang, "Long-distance fiber-optic point-sensing systems based on random fiber lasers," Opt. Express 20, 17695-17700 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-16-17695


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