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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 19 — Sep. 12, 2011
  • pp: 18149–18154

300 km-ultralong Raman fiber lasers using a distributed mirror for sensing applications

Hugo Martins, Manuel B. Marques, and Orlando Frazão  »View Author Affiliations

Optics Express, Vol. 19, Issue 19, pp. 18149-18154 (2011)

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Several configurations of ultralong Raman fiber lasers (URFL) based on a distributed mirror combined with Bragg gratings or fiber loop mirrors are studied. Two continuous-wave URFL configurations, with single and cascaded cavities using fiber Bragg gratings as mirrors are explored for a 300 km long fiber. For optical sensing, the cavity length was optimized for 250 km using one of the gratings an intensity sensor. Another URFL configuration based in a fiber loop mirror is also reported. For optical sensing using a 300 km long fiber it is shown that the best choice is a hybrid configuration. The sensitivity of the FBG laser sensor range was from (76 ± 2) × 10−6 με−1 (for lower strain) to (9.0 ± 0.4) × 10−6 με−1 (for higher strain).

© 2011 OSA

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.3510) Fiber optics and optical communications : Lasers, fiber

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: June 14, 2011
Revised Manuscript: July 18, 2011
Manuscript Accepted: July 24, 2011
Published: August 31, 2011

Hugo Martins, Manuel B. Marques, and Orlando Frazão, "300 km-ultralong Raman fiber lasers using a distributed mirror for sensing applications," Opt. Express 19, 18149-18154 (2011)

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