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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 18 — Aug. 29, 2011
  • pp: 17344–17349

Mechanism and characteristics of long period fiber gratings in simplified hollow-core photonic crystal fibers

Zhifang Wu, Zhi Wang, Yan-ge Liu, Tingting Han, Shuo Li, and Huifeng Wei  »View Author Affiliations

Optics Express, Vol. 19, Issue 18, pp. 17344-17349 (2011)

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We demonstrate the fabrication of high-quality LPFGs in simplified hollow-core photonic crystal fibers, composed of a hollow hexagonal core and six crown-like air holes, using CO2-laser-irradiation method. Theoretical and experimental investigations indicate that the LPFGs are originated from the strong mode-coupling between the LP01 and LP11 core modes. And a dominant physical mechanism for the mode-coupling is experimentally confirmed to be the periodic microbends rather than the deformations of the cross-section or other common factors. In addition, the LPFGs are highly sensitive to strain and nearly insensitive to temperature, and are promising candidates for gas sensors and nonlinear optical devices.

© 2011 OSA

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2340) Fiber optics and optical communications : Fiber optics components
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: June 23, 2011
Revised Manuscript: August 6, 2011
Manuscript Accepted: August 8, 2011
Published: August 18, 2011

Zhifang Wu, Zhi Wang, Yan-ge Liu, Tingting Han, Shuo Li, and Huifeng Wei, "Mechanism and characteristics of long period fiber gratings in simplified hollow-core photonic crystal fibers," Opt. Express 19, 17344-17349 (2011)

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