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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 8 — Apr. 11, 2011
  • pp: 7705–7716

Geometrical study of a hexagonal lattice photonic crystal fiber for efficient femtosecond laser grating inscription

Tigran Baghdasaryan, Thomas Geernaert, Francis Berghmans, and Hugo Thienpont  »View Author Affiliations

Optics Express, Vol. 19, Issue 8, pp. 7705-7716 (2011)

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We have studied transverse propagation of femtosecond pulse duration laser light through the microstructure of hexagonal lattice photonic crystal fibers. Our results provide insight in the role of the microstructure on the amount of optical power that reaches the core of the PCF, which is of particular importance for grating inscription applications. We developed a dedicated approach based on commercial FDTD software and defined a figure of merit, the transverse coupling efficiency, to evaluate the coupling process. We analyzed the propagation of femtosecond laser pulses to the core of a wide range of PCFs and studied the influence of the PCF orientation angle, the air hole pitch and air hole radius on the energy reaching the core. We have found that the transverse coupling efficiency can benefit from a dedicated design of the microstructured cladding and an accurate fiber orientation. We designed a dedicated PCF microstructure that enhances transverse coupling to the core at a wavelength of 800 nm.

© 2011 OSA

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: February 11, 2011
Revised Manuscript: March 21, 2011
Manuscript Accepted: March 21, 2011
Published: April 6, 2011

Tigran Baghdasaryan, Thomas Geernaert, Francis Berghmans, and Hugo Thienpont, "Geometrical study of a hexagonal lattice photonic crystal fiber for efficient femtosecond laser grating inscription," Opt. Express 19, 7705-7716 (2011)

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